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Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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20-03-2016 дата публикации

Ультразвуковой расходомер газа

Номер: RU0000160477U1
Автор: Александр Михайлович Деревягин
Принадлежит: Александр Михайлович Деревягин

1. Расходомер, содержащий трубчатый корпус, на измерительном участке которого попарно установлены обратимые ультразвуковые преобразователи, при этом указанный измерительный участок охвачен жестким бандажом в форме обечайки, а трубчатый корпус снабжен двумя прямыми торцевыми участками.2. Расходомер по п. 1, отличающийся тем, что последовательно с указанным измерительным участком размещен второй измерительный участок, охваченный жестким бандажом в форме обечайки.3. Расходомер по п. 1, отличающийся тем, что прямые торцевые участки выполнены безфланцевыми и предназначены для соосного сварного соединения с трубой газопровода. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 160 477 U1 (51) МПК G01F 1/66 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ (21)(22) Заявка: ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2015151059/28, 27.11.2015 (24) Дата начала отсчета срока действия патента: 27.11.2015 (72) Автор(ы): Деревягин Александр Михайлович (RU) (73) Патентообладатель(и): Деревягин Александр Михайлович (RU) R U Приоритет(ы): (22) Дата подачи заявки: 27.11.2015 (45) Опубликовано: 20.03.2016 Бюл. № 8 1 6 0 4 7 7 R U (57) Формула полезной модели 1. Расходомер, содержащий трубчатый корпус, на измерительном участке которого попарно установлены обратимые ультразвуковые преобразователи, при этом указанный измерительный участок охвачен жестким бандажом в форме обечайки, а трубчатый корпус снабжен двумя прямыми торцевыми участками. 2. Расходомер по п. 1, отличающийся тем, что последовательно с указанным измерительным участком размещен второй измерительный участок, охваченный жестким бандажом в форме обечайки. 3. Расходомер по п. 1, отличающийся тем, что прямые торцевые участки выполнены безфланцевыми и предназначены для соосного сварного соединения с трубой газопровода. Стр.: 1 U 1 U 1 (54) УЛЬТРАЗВУКОВОЙ РАСХОДОМЕР ГАЗА 1 6 0 4 7 7 Адрес для переписки: 119334, Москва, ул. Косыгина, 5, кв. 35, Щедрину М.Б. U 1 U 1 1 6 0 4 7 7 1 6 0 4 7 7 R U R U Стр.: 2

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Номер записи: 1
14-03-2017 дата публикации

Накладной преобразователь электроакустический к ультразвуковым расходомерам

Номер: RU0000169297U1
Автор: Андрей Борисович Пименов, Вадим Владимирович Кокин
Принадлежит: Андрей Борисович Пименов, Вадим Владимирович Кокин

Полезная модель относится к измерительным приборам, конкретнее к ультразвуковым расходомерам для трубопроводов, в частности к накладным электроакустическим преобразователям. Накладной преобразователь электроакустический к ультразвуковым расходомерам содержит корпус из пластика с крышкой, выполненный в виде клина, и установленные в корпусе пьезоэлемент с токоподводами, направленный приемно-излучающей поверхностью в сторону клина, демпфер, примыкающий к задней поверхности пьезоэлемента, прижимную пластину, при этом в него дополнительно введены термокомпенсатор, расположенный между демпфером и прижимной пластиной, и акустический согласователь, связанный с приемно-излучающей поверхностью пьезоэлемента и клином. Технический результат – повышение стабильности и точности измерения и эксплуатационного срока службы датчика. 9 з.п. ф-лы, 2 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 169 297 U1 (51) МПК G01F 1/66 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21)(22) Заявка: 2016146340, 25.11.2016 (24) Дата начала отсчета срока действия патента: 25.11.2016 (72) Автор(ы): Пименов Андрей Борисович (RU), Кокин Вадим Владимирович (RU) 14.03.2017 Приоритет(ы): (22) Дата подачи заявки: 25.11.2016 (56) Список документов, цитированных в отчете о поиске: US 4373401 A, 15.02.1983. US Адрес для переписки: 115201, Москва, а/я 16, пат. пов. Глазуновой В.П. 1 6 9 2 9 7 (57) Формула полезной модели 1. Накладной преобразователь электроакустический к ультразвуковым расходомерам, содержащий корпус из пластика с крышкой, выполненный в виде клина, и установленные в корпусе пьезоэлемент с токоподводами, направленный приемно-излучающей поверхностью в сторону клина, демпфер, примыкающий к задней поверхности пьезоэлемента, прижимную пластину, отличающийся тем, что в него дополнительно введены термокомпенсатор, расположенный между демпфером и прижимной пластиной, и акустический согласователь, связанный с приемно-излучающей ...

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Номер записи: 2
12-03-2018 дата публикации

Термопарный преобразователь скорости

Номер: RU0000177775U1
Автор: Виктор Петрович Шаров, Эдуард Алексеевич Болтенко
Принадлежит: Виктор Петрович Шаров, Эдуард Алексеевич Болтенко

Полезная модель относится к измерительной технике и может использоваться при определении скорости однофазного потока теплоносителя. Термопарный преобразователь скорости, включающий в себя термопару с нагревом спая, регистратора полезного сигнала стабилизированный высокочастотный источник напряжения с частотой 50 кГц, блок выделения сигналов, состоящий из усилителя термоэдс, фильтра нижних частот второго порядка с параметрами R1=R2=40 кOм, С1=С2=4,7 мкФ. Техническим результатом является повышение точности определения скорости однофазного потока теплоносителя. 1 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 177 775 U1 (51) МПК G01K 7/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК G01F 1/69 (2018.01) (21)(22) Заявка: 2017133073, 21.09.2017 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Болтенко Эдуард Алексеевич (RU), Шаров Виктор Петрович (RU) Дата регистрации: 12.03.2018 (56) Список документов, цитированных в отчете о поиске: П.А. Коротков и др. "Тепловые (45) Опубликовано: 12.03.2018 Бюл. № 8 1 7 7 7 7 5 R U (54) ТЕРМОПАРНЫЙ ПРЕОБРАЗОВАТЕЛЬ СКОРОСТИ (57) Реферат: Полезная модель относится к измерительной напряжения с частотой 50 кГц, блок выделения технике и может использоваться при определении сигналов, состоящий из усилителя термоэдс, скорости однофазного потока теплоносителя. фильтра нижних частот второго порядка с Термопарный преобразователь скорости, параметрами R1=R2=40 кOм, С1=С2=4,7 мкФ. включающий в себя термопару с нагревом спая, Техническим результатом является повышение регистратора полезного сигнала точности определения скорости однофазного стабилизированный высокочастотный источник потока теплоносителя. 1 ил. Стр.: 1 U 1 U 1 Адрес для переписки: 142530, Московская обл., Электрогорск, ул. Кржижановского, 26, кв. 56, Болтенко Эдуард Алексеевич расходомеры", Машиностроение, Л., 1968, с.121. RU 30998 U1, 10.07.2003. RU 2362124 C1, 20.07.2009. RU 2126956 C1, 27.02. ...

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Номер записи: 3
23-05-2018 дата публикации

Электромагнитный расходомер

Номер: RU0000179737U1
Автор: Виктор Константинович Судариков, Иван Дмитриевич Вельт, Надежда Борисовна Резникова, Роман Вячеславович Тишкин, Светлана Анатольевна Полякова, Юрий Станиславович Куржий
Принадлежит: Акционерное общество "Научно-исследовательский институт теплоэнергетического приборостроения" АО "НИИТеплоприбор"

Полезная модель относится к приборостроению, в частности к электромагнитным расходомерам, предназначенным для измерения расхода электропроводных жидкостей. Электромагнитный расходомер состоит из трубы 1, выполненной из нержавеющей стали с полиуретановым электроизоляционным слоем внутренней поверхности, и индуктора, состоящего из магнитопровода 2 с полюсными наконечниками 3 и двух индукционных катушек 4. Электроды 5 расположены на трубе по линии 6, направленной перпендикулярно оси канала 7 и направлению магнитного поля 8. На внешней стороне кожуха 9 смонтировано измерительное устройство 10, центральная ось которого располагается по линии, соединяющей электроды. Технический результат - упрощение конструкции и технологии изготовления прибора. 1 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 179 737 U1 (51) МПК G01F 1/58 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК G01F 1/58 (2017.05) (21)(22) Заявка: 2017105117, 16.02.2017 (24) Дата начала отсчета срока действия патента: Дата регистрации: 23.05.2018 (73) Патентообладатель(и): Акционерное общество "Научно-исследовательский институт теплоэнергетического приборостроения" АО "НИИТеплоприбор" (RU) (45) Опубликовано: 23.05.2018 Бюл. № 15 Адрес для переписки: 129085, Москва, пр-кт Мира, 95, АО "НИИТеплоприбор" (56) Список документов, цитированных в отчете о поиске: RU 2474791 C1, 10.02.2013. RU U 1 1 7 9 7 3 7 R U (54) ЭЛЕКТРОМАГНИТНЫЙ РАСХОДОМЕР (57) Реферат: Полезная модель относится к приборостроению, в частности к электромагнитным расходомерам, предназначенным для измерения расхода электропроводных жидкостей. Электромагнитный расходомер состоит из трубы 1, выполненной из нержавеющей стали с полиуретановым электроизоляционным слоем внутренней поверхности, и индуктора, состоящего из магнитопровода 2 с полюсными Стр.: 1 наконечниками 3 и двух индукционных катушек 4. Электроды 5 расположены на трубе по линии 6, направленной перпендикулярно оси канала 7 и ...

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Номер записи: 4
30-10-2018 дата публикации

Первичный преобразователь теплосчетчика-расходомера

Номер: RU0000184537U1
Автор: Анастасия Сергеевна Шишова, Валентина Николаевна Кашманова, Семён Владимирович Швецов
Принадлежит: Общество с ограниченной ответственностью "АРГО-ЦЕНТР"

Полезная модель относится к измерительной технике и может быть использована в различных отраслях промышленности. В первичном преобразователе теплосчетчика-расходомера, содержащем корпус со входным и выходным патрубками, находящимися на одной оси и параллельными измерительной части корпуса, и два ультразвуковых преобразователя, каждый из датчиков размещен на торцах измерительной части корпуса, ультразвуковые лучи соосны, что повышает точность измерений и стабилизирует характеристики по времени. Корпус устройства, где располагается электронная плата расходомера, закрыт кожухом из оргстекла, который фиксируется с помощью крепления. Один из температурных датчиков размещен в патрубке для подключения погружного датчика температуры. С целью увеличения точности измерений в рабочей части корпуса создается управляемый турбулентный поток, что позволяет избежать образования налета ржавчины и отложения солей на стенках, с целью снижения себестоимости изделия и повышения технологичности производства корпус изготавливается из полипропилена, который поглощает внешние звуковые воздействия, что делает конструкцию первичного преобразователя более помехозащищенной. Технический результат: повышение точности измерений, стабилизация характеристик по времени, отсутствие образования налета ржавчины и отложения солей на стенках рабочей поверхности устройства, повышение технологичности производства. 1 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 184 537 U1 (51) МПК G01F 1/66 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК G01F 1/66 (2018.08) (21)(22) Заявка: 2018111501, 30.03.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): Общество с ограниченной ответственностью "АРГО-ЦЕНТР" (RU) 30.10.2018 (56) Список документов, цитированных в отчете о поиске: RU 153785 U1, 27.07.2015. RU (45) Опубликовано: 30.10.2018 Бюл. № 31 2517996 C1, 10.06.2014. RU 115467 U1, 27.04.2012. RU 2331851 C2, 20. ...

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Номер записи: 5
28-10-2021 дата публикации

Ультразвуковой датчик расхода газа

Номер: RU0000207419U1
Автор: Алексей Викторович Юровский, Владимир Васильевич Майстренко, Иван Владимирович Леганов, Людмила Николаевна Леганова, Станислав Васильевич Мажирин
Принадлежит: Акционерное общество Омское производственное объединение "Радиозавод им. А.С. Попова" (РЕЛЕРО)

Полезная модель относится к измерительной технике и может найти применение для измерения расхода газообразных сред в составе устройств измерения потребления газа индивидуальными потребителями в жилищно-коммунальном и бытовом хозяйстве. Ультразвуковой датчик расхода газа включает термодатчик, тройник с входным и выходным участками, имеющими круглое сечение, пьезоэлектрические ультразвуковые датчики, имеющие V-образное расположение в измерительном тракте тройника. При этом термодатчик установлен в измерительный тракт тройника. Основание имеет сквозное отверстие, обеспечивающее контакт измеряемой среды с термодатчиком. Конструктивные параметры для измерительного тракта тройника, имеющего сужение прямоугольного сечения, выполненное равно симметрично относительно центра тройника, определены соотношением Sсуж=К⋅SДу, где Sсуж- площадь поперечного сечения участка сужения, К - коэффициент сужения, находящийся в пределах 0,6<К<0,9, SДу- площадь поперечного сечения входного участка сужения. Технический результат заключается в улучшении метрологических и технических характеристик, а именно увеличение точности измерения, уменьшение падения давления, уменьшение габаритных размеров и массы устройства. 3 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 207 419 U1 (51) МПК G01F 1/66 (2006.01) G01F 15/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК G01F 1/662 (2021.02); G01F 1/668 (2021.02); G01F 15/02 (2021.02) (21)(22) Заявка: 2021100407, 11.01.2021 (24) Дата начала отсчета срока действия патента: Дата регистрации: 28.10.2021 (45) Опубликовано: 28.10.2021 Бюл. № 31 2 0 7 4 1 9 R U (56) Список документов, цитированных в отчете о поиске: US 7093502 B2, 22.08.2006. US 6854338 B2, 15.02.2005. WO 2007078905 A1, 12.07.2007. RU 2375682 C1, 10.12.2009. SU 400808 A1, 01.10.1973. (54) УЛЬТРАЗВУКОВОЙ ДАТЧИК РАСХОДА ГАЗА (57) Реферат: Полезная модель относится к измерительной Конструктивные параметры для измерительного технике ...

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Номер записи: 6
01-03-2012 дата публикации

Model building for pressure diagnostics simulation

Номер: US20120053906A1
Автор: Dale Sherman, Kim Sherman, Matthew Wellman, Micah Harrison
Принадлежит: THINK DESIGN LLC

A scale model pressure building for teaching pressure diagnostics and weatherization strategies for residential and commercial building structures. The model building is designed for ease of fabrication and ease of assembly. The design allows the instructor to simulate numerous construction errors, airflow problems, air sealing strategies, and testing procedures while in a classroom setting.

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Номер записи: 7
19-04-2012 дата публикации

Electromagnetic fluid velocity sensor with adjustable electrodes

Номер: US20120090403A1
Автор: Lawrence B. Marsh
Принадлежит: BrickHouse Innovations LLC

An electromagnetic flowmeter includes at least one electromagnet coil arranged outside a liquid flow passage for generating an electromotive force in the liquid flow, and at least one pair of electrodes adjustably extending within the liquid flow for generating a velocity component signal. Preferably, two collinearly arranged coils are provided externally on opposite sides of the liquid flow passage, and a first set of two orthogonally-arranged pairs of coplanar electrodes are mounted on an adjustable probe strut that extends into the liquid flow. For greater accuracy, a Hall-effect device is provided on the probe. Additional sets of electrode pairs may be secured to the strut in planes parallel to the first electrode set. A second pair of collinear coils may be mounted externally of the liquid passage and orthogonally relative to the first coil pair, the two pairs of coils being alternately energized to produce three orthogonally arranged velocity components.

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Номер записи: 8
03-05-2012 дата публикации

Flow measuring device

Номер: US20120103086A1
Автор: Noboru Kitahara, Takashi Enomoto, Yasushi Goka
Принадлежит: Denso Corp

A flow measuring device includes a housing, a support, and a flow measurement element. The housing defines a passage therein and includes a passage narrowing part, which reduces a cross-sectional area of the passage, in a predetermined part of the passage. The support has a platy shape and is disposed along a flow direction of fluid flowing in the passage. The flow measurement element is located inside the passage narrowing part and is disposed on a surface of the support. The flow measurement element detects a flow rate of fluid flowing in the passage. The passage narrowing part has an inner wall surface that gradually reduces a width of the passage from a center side to both end sides of the passage in a height direction of the passage, which is perpendicular to a direction of the width of the passage.

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Номер записи: 9
03-05-2012 дата публикации

Flow rate measuring apparatus

Номер: US20120103107A1
Автор: Hiroyuki Uramachi, Koji Tanimoto, Masahiro Kawai, Naoyuki KISHIKAWA, Shinichiro Hidaka, Yuji Ariyoshi
Принадлежит: Mitsubishi Electric Corp

Provided is a flow rate measuring apparatus which suppresses deformation of a base main body due to vibration of a pipe so as to be able to reduce occurrence of disconnection of wires due to the vibration of the pipe. The flow rate measuring apparatus includes a bonding portion ( 16 ) corresponding to a deformation suppression portion provided between an inner wall surface ( 17 a ) of a flange ( 17 ) of a base ( 11 ) and an outer circumferential wall surface ( 6 a ) of a cover ( 6 ) covering a circuit board ( 5 ), which is opposed to the inner wall surface ( 17 a ), for connecting the flange ( 17 ) and the cover ( 6 ) to suppress the deformation of a base main body ( 32 ) of the base ( 11 ) due to vibration of an intake pipe ( 50 ).

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Номер записи: 10
14-06-2012 дата публикации

Fluid flow conditioner

Номер: US20120144928A1
Автор: Brian Mcdole, Eric Wible, Michael R. Noel
Принадлежит: FLUID COMPONENTS INTERNATIONAL LLC

A device and method for conditioning media flowing within a conduit enabling sensors placed within short straight run distances to measure media flow with improved accuracy employing a thermal flow instrument. A flow conditioner downstream of a media flow measuring transducer has walls that diverge in the flow direction to optimize readings of the media flow from the transducer.

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Номер записи: 11
21-06-2012 дата публикации

Drip Monitor

Номер: US20120152032A1
Автор: Itzhak Pomerantz, Robert Borenstain
Принадлежит: AFEKA TEL AVIV ACADEMIC COLLEGE OF ENGR

A low power, low cost system and method for the detection of flow disturbances in a fluid dripping system is disclosed. In one embodiment, a light source and a light detector configured to monitor the amount of light passing through a droplet while the droplet is suspended and later falls from the tip of a tube. In another embodiment, dripping fluid is monitored from a system maintained part of the time in a sleep mode to conserve power, the system waking up at predetermined times to determine from detected light whether the monitored system is functioning properly.

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Номер записи: 12
21-06-2012 дата публикации

Ultrasonic, Flow Measuring Device

Номер: US20120153777A1
Автор: Andreas Berger, Michal Bezdek, Pierre Ueberschlag
Принадлежит: Endress and Hauser Flowtec AG

An ultrasonic transducer for an ultrasonic, flow measuring device comprising an electromechanical transducer element and an ultrasound window, wherein an adapting, or matching, layer liquid at operating conditions of the ultrasonic transducer is arranged between the electromechanical transducer element and the ultrasound window, wherein the ultrasonic transducer has holding means, which exert a releasable force toward the ultrasound window on the electromechanical transducer element, in order to hold the electromechanical transducer element in a predetermined position relative to the ultrasound window.

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Номер записи: 13
05-07-2012 дата публикации

Airspeed And Velocity Of Air Measurement

Номер: US20120173191A1
Автор: Lothar B. Moeller
Принадлежит: Alcatel Lucent SAS

A velocity relevant to a body may be accurately measured using sound waves. Such velocity relevant to a body may be airspeed, i.e., the velocity of the body with respect to the surrounding air, or the velocity of air in the vicinity of the body or along its desired travel path. More specifically, the speed of two or more sounds may be correlated so that an airspeed, or the velocity of air, may be determined by taking into account the fact that sound traveling in the same direction as airflow travels faster than sound traveling in the direction opposite to airflow.

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Номер записи: 14
23-08-2012 дата публикации

Pump Tester

Номер: US20120215466A1
Автор: Karl A. Ruiter, Mirik Hovsepian
Принадлежит: Pronk Technologies Inc

Methods of and devices for testing medical pumps via tracking induced single or multiple bubble trajectories within a fluid flow conduit ( 60 ) and methods of synchronized ( 600 ) corrections ( 604 ) of flow data estimates.

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Номер записи: 15
13-09-2012 дата публикации

Vibratory flowmeter friction compensation

Номер: US20120232811A1
Автор: Anthony William Pankratz, Joel Weinstein
Принадлежит: Micro Motion Inc

The invention relates to meter electronics (20) for vibratory flowmeter friction compensation is provided. The meter electronics (20) includes an interface (201) configured to communicate with a flowmeter assembly (10) of a vibratory flowmeter (5) and receive a vibrational response and a processing system (203) coupled to the interface (201) and configured to measure a mass flow rate of a fluid using the vibrational response. The processing system (203) is configured to determine a fluid velocity (V) using the mass flow rate, a fluid density (ρ), and a cross-sectional flow area (A), determine a friction factor (f) using the fluid velocity (V) and a pressure drop (ΔP), and determine a compensation factor using the friction factor (f). The invention also relates to a vibratory flowmeter compensation method.

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Номер записи: 16
11-10-2012 дата публикации

Flow rate measuring device

Номер: US20120255368A1
Автор: Aoi Watanabe, Hirokazu Gotou, Kouichi Takemura, Yuji Fujii, Yuji Nakabayashi
Принадлежит: Panasonic Corp

When a flow rate is equal to or more than a reference flow rate, a reference voltage is changed to a level capable of measuring stably to thereby realize the improvement of measurement accuracy at the time of a large amount of flow rate. A flow rate determination means compares a flow rate calculated by a flow rate calculation means with the reference flow rate. When the calculated flow rate is larger than the reference flow rate, the reference voltage set by a reference voltage setting means is changed, whereby the zero cross point can be detected stably at the portion where the degree of the influence of the change in the amplitude of the received signal is small. Thus, it is possible to provide a flow rate measuring device capable of measuring a flow rate stably with high accuracy even when a fluid flow is disturbed due to a large amount of flow rate.

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Номер записи: 17
18-10-2012 дата публикации

Diesel particulate filter flow rate measuring apparatus and method

Номер: US20120260727A1
Автор: Charles E. Kinkade, JR.
Принадлежит: SPX Corp

A particulate filter is provided. The particulate filter includes: a plurality of sensors located in the filter; and a controller operatively connected to the sensors to determine a relative flow velocity over the sensors. A method for detecting obstructions in a filter may also be provided. The method may include: locating a sensor in a zone within a filter; connecting the sensor to a controller; monitoring the sensor with the controller; and determining whether the zone is obstructed based on data received from the sensor.

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Номер записи: 18
25-10-2012 дата публикации

Channel member and ultrasonic fluid-measuring apparatus

Номер: US20120266691A1
Автор: Hirokazu Gotou, Hirokuni Murakami, Makoto Nakano, Masato Satou
Принадлежит: Panasonic Corp

Provided are a channel member and an ultrasonic fluid-measuring apparatus that can prevent the disturbance from occurring in the ultrasonic waves due to disturbance of a fluid. A channel member ( 15 ) includes a first side wall part ( 21 ) and a second side wall part ( 22 ) that are parallel to each other, a first ultrasonic wave input/output section ( 32 ) and a second ultrasonic wave input/output section ( 33 ) provided in the first side wall part, a reflecting surface ( 35 ) provided on an inner surface of the second side wall part, and an ultrasonic wave transmission membrane ( 38 ) that covers the first ultrasonic wave input/output section and the second ultrasonic wave input/output section and transmits ultrasonic waves ( 36, 37 ) therethrough. The first ultrasonic wave input/output section and the second ultrasonic wave input/output section are continuous with each other, and the ultrasonic wave transmission membrane covers both the first ultrasonic wave input/output section and the second ultrasonic wave input/output section together.

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Номер записи: 19
01-11-2012 дата публикации

Ultrasonic flowmeter

Номер: US20120272748A1
Автор: Aoi Watanabe, Hirokazu Gotou, Yuji Fujii, Yuji Nakabayashi
Принадлежит: Panasonic Corp

An ultrasonic flowmeter which can enhance measurement accuracy is provided, including ultrasonic transducers; a propagation time measurement block for measuring a propagation time elapsed before an ultrasonic wave transmitted from the ultrasonic transducer arrives at the ultrasonic transducer; a control block for determining a flow volume from the propagation time; correction calculation means for calculating a correction value based on characteristics of the ultrasonic transducers, a delay between transmission of an ultrasonic wave from the ultrasonic transducer and commencement of measurement of a propagation time, a delay between arrival of the ultrasonic wave at the receiving-side ultrasonic transducer and detection of the ultrasonic wave, and a difference between the measured and a true propagation times; and correction value selection means for selecting a correction value; and a propagation time correction block for correcting a propagation time.

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Номер записи: 20
29-11-2012 дата публикации

Magnetic circuit device for a magnetic-inductive flow meter

Номер: US20120297892A1
Автор: Chris Paul, Jef Neven, Stefan Neuburger
Принадлежит: KROHNE AG

A magnetic circuit device ( 1 ) for implementing the magnetic circuit of a magnetic-inductive flow meter ( 12 ) has at least one coil ( 2 b ) which generates a magnetic field, at least two opposing flat pole elements ( 3 a, 3 b ), between which, in the installed state, the measurement tube ( 13 ) of the magnetic-inductive flow meter is located, and with at least one magnetically conductive connecting element ( 4 a, 4 b ) for magnetic closure of the magnetic circuit. The cross section of the core ( 2 a ) of the coil ( 2 ) and/or of the magnetically conductive connecting elements ( 4 a, 4 b ) is as small as possible. Preferably, the magnetically conductive connecting element or the magnetically conductive connecting elements ( 4 a, 4 b ) are arc-shaped so that the resulting magnetic circuit device ( 1 ) has a ring-shaped outer contour and extensively encompasses at least one of the flat pole elements ( 3 a, 3 b ).

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Номер записи: 21
06-12-2012 дата публикации

Sensor assembly for use with a fluid transport system and method of assembling same

Номер: US20120304759A1
Автор: Solomon Feldman, Toan Huu Nguyen
Принадлежит: Individual

A sensor assembly for use with a fluid transport system is provided. The sensor assembly includes at least two sensors that are configured to measure a rate of flow of a fluid channeled through a pipeline of the fluid transport system. Moreover, the sensor assembly includes an annular collar that is coupled to the two sensors. The collar includes at least a first opening and at least a second opening defined therein. The first opening and the second opening are each sized to receive the two sensors therein such that the two sensors are substantially coaxially aligned with each other. A first sensor of the two sensors is positioned downstream from a second sensor of the two sensors.

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Номер записи: 22
27-12-2012 дата публикации

Fluid leak detection system

Номер: US20120324985A1
Автор: Abdul Khaliq, Brian James Whitright, Douglas Scott Byrd, John Patrick VanDevelde, John Victor Hains, Scott Victor Annin, Yili Gu
Принадлежит: General Electric Co

A fluid leak detection system is provided, and includes a fluid conduit, a fluid-cooled device having an inlet and an outlet, an inlet flow meter, an outlet flow meter, and a controller. The inlet flow meter is fluidly connected to the fluid conduit. The inlet flow meter monitors the inlet of the fluid-cooled device for an inlet temperature and an inlet flow rate. The inlet flow meter has an inlet flow meter drift versus process fluid temperature curve. The outlet flow meter is fluidly connected to the fluid conduit. The outlet flow meter monitors the outlet of the fluid-cooled device for an outlet temperature and an outlet flow rate. The outlet flow meter has an outlet flow meter drift versus process fluid temperature curve. The controller is in communication with the inlet flow meter and the outlet flow meter.

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Номер записи: 23
03-01-2013 дата публикации

Startup and operational techniques for a digital flowmeter

Номер: US20130000418A1
Автор: Manus P. Henry, Mayela E. Zamora
Принадлежит: Invensys Systems Inc

Startup and operational techniques for a digital flowmeter are described. For example, during a startup operation of the flowmeter, the mode of operation might include a random sequence mode, in which filtered, random frequencies are applied as a drive signal to a flowtube associated with the digital flowmeter. Once the flowtube reaches a resonant mode of vibration, the digital flowmeter may transition to a positive feedback mode, in which a sensor signal representing a motion of the flowtube is fed back to the flowtube as a drive signal. In a digital synthesis mode of operation, the analyzed sensor signals are used to synthesize the drive signal. The digital flowmeter may revert to a previous mode to regain stable and desired oscillation of the flowtube, such as might be required during a recovery operation associated with a disturbance to an operation of the digital flowmeter.

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Номер записи: 24
07-02-2013 дата публикации

Air mass meter

Номер: US20130031959A1
Автор: Stephan Schürer, Thorsten Knittel
Принадлежит: Continental Automotive GmbH

An air mass meter having a sensor chip. The sensor chip is constructed as a microelectromechanical system and has a sensor element, an electronic evaluation circuit and an electronic oscillator. The sensor chip is fastened to a carrier element using an adhesive. In order to specify an air mass meter which makes it possible to evaluate data in a particularly reliable and accurate manner, the sensor chip is divided into a first region and a second region. The sensor chip is fastened to the carrier element using the adhesive solely in the first region, and the sensor element and the oscillator are arranged in the second region.

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Номер записи: 25
07-02-2013 дата публикации

Methods and apparatus for level loop control

Номер: US20130032217A1
Автор: Brian Burlage, Thomas Pesek
Принадлежит: FISHER CONTROLS INTERNATIONAL LLC

Example methods and apparatus for level loop control are disclosed. A disclosed example method includes determining via a sensor a first pressure of a liquid in a tank, determining via a turbine flow meter a second pressure of the liquid in the tank, determining if the first pressure is within a specified range of deviation from the second pressure to determine an operational state of the turbine flow meter, and transmitting a diagnostic message indicating that the turbine flow meter needs to be serviced based on the state of the turbine flow meter.

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Номер записи: 26
07-03-2013 дата публикации

Air flow rate measuring apparatus

Номер: US20130055801A1
Автор: Hidehito TSUJII, Takao Ban, Yasushi Kohno
Принадлежит: Denso Corp

An air flow rate measuring apparatus includes a heater and a control circuit. The heater heats a part of an intake air sucked into an engine. The control circuit controls an energization of the heater. The heater has a measuring-mode temperature when a flow rate of the intake air is measured. The control circuit has a heat cleaner which temporarily raises a temperature of the heater higher than the measuring-mode temperature when an energization of the air flow rate measuring apparatus is started.

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Номер записи: 27
28-03-2013 дата публикации

METHODS AND APPARATUS FOR FLUID FLOW MEASUREMENT

Номер: US20130080081A1
Автор: Dugger Jeffery, Leaders Jeffrey L.
Принадлежит: Soneter, LLC

A fluid flow meter estimates the velocity of water or another fluid flowing through pipe by comparing measurements of the water velocity to one or more pre-determined templates. The fluid flow meter may collect measurement signals from one or more flow sensors (e.g., ultrasonic transducers), estimate the fluid velocity or flow rate by comparing the measurement signals to the template(s), and either store the comparison results in local memory, transmit the results to a remote memory or server, or both. In some embodiments, the fluid flow meter transmits the results to a server via a wireless interface (e.g., a Zigbee, Bluetooth, or Wi-fi interface). The transducers and processing system can be powered by a battery, a power line, or, for manifolds installed outdoors, a solar cell. Example transducers and processing systems may also have a passive wake-up feature for power reduction; that is, they may only draw power when water or another fluid flows through the pipe. 1. A fluid flow meter to measure a velocity of a fluid flowing through a lumen , the fluid flow meter comprising:a hinged housing to fit about a structure defining the lumen;a sensor, disposed within the hinged housing, to provide a measurement signal representative of the velocity, the sensor comprising:(i) a first transducer to transmit an ultrasonic signal through the fluid flowing through the lumen;(ii) a second transducer to receive a reflected, scattered, or transmitted copy of the ultrasonic signal; and(iii) a front end to produce the measurement signal from the reflected, scattered, or transmitted copy of the ultrasonic signal;a memory to store a template associated with a possible velocity of the fluid;a processor, communicatively coupled to the sensor and to the memory, to perform a comparison of the measurement signal to the template and to determine an estimated velocity of the fluid based on the comparison; anda communications interface, communicatively coupled to the processor, to transmit ...

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Номер записи: 28
04-04-2013 дата публикации

FLOW METER DEVICE

Номер: US20130081477A1
Автор: Fujii Yuji, Gotou Hirokazu, Nakabayashi Yuji, Watanabe Aoi
Принадлежит: Panasonic Corporation

In a flow meter device of the present invention, a control means causes a temperature measuring means to singly measure a temperature of a fluid. A flow compensation means calculates a temperature of a fluid from a propagation time and makes compensation for the flow rate using the temperature calculated based on the propagation time in a state in which the temperature is not measured by the temperature measuring means. Thus, when compensation is made for the measured flow rate to derive a flow rate at a desired temperature, flow rate compensation can be implemented with high accuracy, versatility of a target fluid can be improved, and low electric power consumption can be achieved. 1. A flow meter device comprising:a first transducer and a second transducer which are provided at a fluid passage and transmit and receive an ultrasonic signal;a temperature measuring means for measuring a temperature of a fluid flowing through the fluid passage;a propagation time measuring means for measuring a propagation time for which the ultrasonic signal is transmitted and received between the first and second transducers;a flow calculating means for calculating a flow rate of the fluid based on the propagation time measured by the propagation time measuring means;a flow compensation means which calculates a temperature of the fluid based on the propagation time measured by the propagation time measuring means and makes compensation for the flow rate of the fluid using at least one of the calculated temperature and the temperature measured by the temperature measuring means; anda control means for controlling at least an operation of the temperature measuring means and an operation of the propagation time measuring means;wherein the control means causes the temperature measuring means to singly measure the temperature of the fluid; andthe flow compensation means calculates the temperature of the fluid based on the propagation time, and makes compensation for the flow rate using ...

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Номер записи: 29
18-04-2013 дата публикации

ULTRASONIC FLOW RATE MEASUREMENT DEVICE

Номер: US20130091958A1
Автор: Fujii Yuji, GOTO Hirokazu, Satou Masato
Принадлежит: Panasonic Corporation

An ultrasonic flow rate measurement device capable of sensing and correcting a temperature without use of a sensor specifically designed for measuring a temperature is provided. The ultrasonic flow rate measurement device includes a first ultrasonic transducer and a second ultrasonic transducer that re disposed in a flow volume measurement block and arranged in such a way that ultrasonic waves are transmitted from one transducer and received by the other transducer; a counter for measuring a propagation time consumed for exchanging the ultrasonic waves between the first ultrasonic transducer and the second ultrasonic transducers; a flow volume computing block that calculates a flow volume from a measurement value of the counter; an oscillation circuit used as a time counter when the counter calculates the propagation time; and a temperature sensing block for sensing a temperature by utilization of a frequency change attributable to a temperature of the oscillation circuit. 1. An ultrasonic flow rate measurement device comprising:a flow volume measurement block through which a fluid to be measured flows; a pair of ultrasonic transducers that are disposed in the flow volume measurement block and configured to transmit ultrasonic waves from one of the pair of ultrasonic transducers and receive the ultrasonic waves by the other of the pair of ultrasonic transducers;a propagation time measurement block configured to measure a propagation time of the ultrasonic waves exchanged between the pair of ultrasonic transducers; a flow volume computing block configured to calculate a flow volume from a value measured by the propagation time measurement block; anda temperature sensing block configured to sense a temperature by measuring a characteristic of a component that has a temperature characteristic and that makes up the ultrasonic flow rate measurement device.2. The ultrasonic flow rate measurement device according to claim 1 , wherein the component having the temperature ...

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Номер записи: 30
25-04-2013 дата публикации

FLOW-METER PROBE

Номер: US20130098150A1
Автор: SELLA Yoav
Принадлежит:

The invention provides a probe for a flowmeter which can be employed in various flow measuring devices utilizing semiconductor or ceramic thermistors. The invention comprises an apparatus for determining the fluid flow rate of a liquid passing through a conduit made of a material having a low thermal conductivity, comprising a probe disposed at least partially inside the wall of the conduit, part of the probe being substantially aligned with an inner surface of the wall, the probe being operationally connected to a control and display unit. The probe comprising a printed circuit board (PCB) on which at least two thermistors are mounted; an upstream thermistor serving for baseline measurements and a spaced apart downstream self-heated thermistor. The control and display unit repeatedly measuring the electrical resistance of the thermistors to generate signals which are electronically processed by the control and display unit to indicate flow rates. 1. An apparatus for determining the fluid flow rate of a liquid passing through a conduit made of a material having a low thermal conductivity , said apparatus comprisinga probe disposed at least partially inside the wall of said conduit, protruding surfaces of encapsulated components which are a part of said probe being substantially aligned with an inner surface of said wall, said probe being operationally connected to 'said probe comprising a printed circuit board (PCB) on which at least two thermistors are mounted;', 'a control and display unit,'}an upstream thermistor serving for baseline measurements anda spaced apart downstream self-heated thermistor for measuring changes in temperature resulting from a surface of said downstream thermistor being cooled by said liquid flowing through said conduit,said control and display unit repeatedly measuring the electrical resistance of said thermistors to generate signals which are electronically processed by said control and display unit to indicate flow rates.2. An apparatus ...

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Номер записи: 31
25-04-2013 дата публикации

CONSTRUCTION FOR MOUNTING ULTRASONIC TRANSDUCER AND ULTRASONIC FLOW METER USING SAME

Номер: US20130098168A1
Автор: Fujii Yuji, Miyata Hajime, Nakano Makoto, Ozaki Yukinori
Принадлежит: Panasonic Corporation

Ultrasonic transducers are attached in a direction of compressing O-ring provided in a housing with a flow passage. Biasing means makes contact with and presses these ultrasonic transducers and at multiple points. A screw is provided for locking this pressing means to the housing. This enables the use of O-ring as a sealing means. Accordingly, an in-expensive ultrasonic flowmeter that facilitates signal processing by reducing propagation of vibration of the ultrasonic transducer to the housing can be achieved. 1. An installation structure of an ultrasonic transducer , comprising:a housing;the ultrasonic transducer attached to the housing;an attachment hole of the ultrasonic transducer created in the housing;a sealing means mounted in the attachment hole;a sealing face provided on the ultrasonic transducer and in contact with the sealing means;a pressing means in contact with the ultrasonic transducer at a plurality of points, and urging the ultrasonic transducer in a direction of compressing the sealing means; anda locking means for locking the pressing means to the housing.2. The installation structure of the ultrasonic transducer of claim 1 , the ultrasonic transducer comprising:a piezoelectric body with a pair of opposing electrode faces; a case electrically connected to one of the electrode faces of the piezoelectric body; a terminal plate electrically connected to a flange of the case; an external electrode provided on the terminal plate in a state insulated from the terminal plate, a conductor provided between the other one of the electrode faces of the piezoelectric body and the external electrode; and an acoustic matching layer bonded to the case in a state facing the piezoelectric body,whereinthe sealing means is provided in contact with the flange and the housing, andthe pressing means is in contact with the terminal plate at not less than three points and urging the terminal plate in a direction of compressing the sealing means.3. The installation ...

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Номер записи: 32
25-04-2013 дата публикации

Flow sensor with bypass taps in laminarizing channel and flow restrictor in a bpyass channel

Номер: US20130098486A1
Автор: Andrew Joseph Milley, Jamie Speldrich, Richard Charles Sorenson
Принадлежит: Honeywell International Inc

A flow sensor includes a main flow body, a laminar flow element, a first main flow body sensor tap, a second main flow body sensor tap, and a bypass flow body. The bypass flow body is coupled to the main flow body and has a first bypass flow port, a second bypass flow port, and a bypass flow channel between the first and second bypass flow ports. The flow restrictor is disposed within the bypass flow channel.

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Номер записи: 33
02-05-2013 дата публикации

Air flow measuring device

Номер: US20130105137A1
Автор: Takao Ban, Yasushi Kohno
Принадлежит: Denso Corp

A thermal-type air flow measuring device includes a heat generation heater and a sensor circuit. The heat generation heater is configured to heat a part of intake air drawn into an engine by heat generation upon energization of the heat generation heater. The sensor circuit is configured to at least control the energization of the heat generation heater and to make temperature of the heat generation heater higher than temperature of the heat generation heater at time of the measurement of the flow rate of air when an external signal is inputted into the sensor circuit from outside of the device.

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Номер записи: 34
02-05-2013 дата публикации

REAL TIME CSF FLOW MEASUREMENT SYSTEM & METHOD

Номер: US20130109998A1
Автор: Fritz Frederick J., Hochman Matias Gabriel, Mattiucci Mark Evan, Swoboda Marek
Принадлежит: SHUNTCHECK, INC.

A system for measuring quantitative CSF flow in shunt tubing implanted under the skin. The system includes an array of thermosensors clustered in three sections, cooling device, placed on the skin surface and an associated data acquisition and analysis device. Two sensor sections are placed over the shunt on the skin and measure real time temperature responses related to CSF movement. One array placed adjacent the cooling device collects data on thermal properties of skin including skin thermal condictivity, specific heat, diffusivity, perfusion, and thermal inertia. The method involves assessing thermal properties of skin and measuring CSF flow in shunt tubing. The method is useful for shunt patency assessment, CSF valve adjustment procedures and CSF flow measurements related to CSF over drainage. Alternatively, only one section of sensors need be used when determining relative CSF flow, without the need to determine thermal skin properties and by applying the cooling device continuously. 1. An apparatus for determining cerebrospinal fluid (CSF) flow rate in an implanted CSF shunt , said apparatus comprising: a first plurality of temperature sensors that are aligned in a transverse direction with respect to said CSF shunt and wherein one of said first plurality of temperature sensors is aligned with the CSF shunt; and', 'a second plurality of temperature sensors that are aligned in a transverse direction with respect to said CSF shunt, downstream of said first plurality of temperature sensors, and wherein one of said second plurality of temperature sensors is aligned with the CSF shunt; and', 'a third plurality of temperature sensors associated with a temperature source that positioned over the CSF shunt whenever said pad is placed against the skin; and, 'a pad that is placed against the skin of a patient over the location of the CSF shunt, said pad comprisinga sensor processing device that is electrically coupled to said pad for receiving temperature data from ...

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Номер записи: 35
09-05-2013 дата публикации

Fouling Resistant Flow Metering System

Номер: US20130112007A1
Автор: Adler Richard Steven, Replogle John
Принадлежит: RSA Environmental

Appurtenances added to a pipe mitigate the effects of upstream valves, sluice gates or pipe elbows to condition the pipe flow for accurate flow rate detection by a reverse propeller meter. Further appurtenances allow the reverse propeller meter to be used in extreme debris situations such as weeds, vines and moss present in many canal systems. The system provides an electronic signal that indicates flow rate and accumulated flow volume, or the signal can be transmit to a central headquarters for remote gate control or canal automation. 1. A system for metering liquid flowing in a conduit comprising:a flow sensor disposed in the conduit;a debris deflection component positioned upstream of the sensor in the conduit and configured to prevent debris from fouling the sensor, anda flow conditioning component disposed in the conduit upstream of the debris deflection component.2. The system of comprising:a plurality of flow conditioning components; andan anti-flow spin component.3. The system of claim 1 , wherein the flow sensor comprises a flow sensor selected from the group consisting of a reverse propeller meter claim 1 , a valve sensor claim 1 , pitot tubes claim 1 , and acoustic based probes claim 1 , or a magnetic sensor.4. The system of wherein the flow sensor is the reverse propeller meter.5. The system of wherein the debris deflection component is configured to divert debris around the sensor while allowing the velocity of a liquid flow in the conduit to be sensed by the sensor.6. The system of claim 1 , wherein the flow conditioning component is configured to create a substantially uniform liquid flow profile to the sensor.7. The system of wherein the flow conditioning component is configured to re-direct a plurality of liquid flows to cross-mix with at least one primary liquid flow so as to obtain a uniform velocity profile for the sensor to detect.8. The system of wherein the flow conditioning is configured to condition a liquid flow formed through a partly open ...

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Номер записи: 36
09-05-2013 дата публикации

FLOW SENSOR ASSEMBLIES

Номер: US20130116940A1
Автор: Berkcan Ertugrul, Chandrasekaran Shankar, Li Bo, Weaver Stanton Earl
Принадлежит: GENERAL ELECTRIC COMPANY

A flow sensor assembly is provided and includes a flow conduit configured to impart a disturbance to a flow, multiple sensors disposed at respective sensing locations along the flow conduit. Each sensor is responsive to the disturbance of the flow and generates a corresponding response signal. The flow sensor assembly further includes a processor operably connected to each sensor, the processor being configured to compute a cross-correlation function between the response signals generated by said sensors, and determine a flow rate and a direction for the flow through the conduit based on the computed cross-correlation function. Additional flow sensor assembly arrangements are also disclosed. 1. A flow sensor assembly comprising:a flow conduit configured to guide a flow;at least one actuator disposed at a respective actuating location along the flow conduit, wherein said at least one actuator is configured to impart a disturbance to the flow within said flow conduit;a sensor disposed at a sensing location along the flow conduit, wherein said sensor is responsive to the disturbance of the flow and generates one or more response signals; and {'sub': s', 'ref, 'compute a modification of a frequency f, which is associated with a respective one of the one or more response signals, with respect to a reference frequency f; and'}, 'a processor operably connected to said sensor, wherein said processor is configured to{'sub': 's', 'determine a flow rate for the flow through said flow conduit based on a functional form of the computed modification of the frequency f.'}2. The flow sensor assembly of claim 1 , wherein the reference frequency fcorresponds to a frequency fassociated with said actuator.3. The flow sensor assembly of claim 1 , wherein the frequency fis computed over time based on a plurality of response signals s.4. The flow sensor assembly of comprising a plurality of actuators claim 1 , wherein at least one of said actuators is disposed on a first side of said ...

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Номер записи: 37
16-05-2013 дата публикации

CALORIMETRIC FLOW METER HAVING HIGH HEAT CONDUCTIVITY STRIPS

Номер: US20130118250A1
Автор: VAN DER WIEL Appolonius Jacobus
Принадлежит: Melexis NV

A flow meter includes a heater for heating a fluid flow along a membrane. A temperature difference is measured between and upstream point and a downstream point. There are additionally provided one or more strips of material having a relatively high heat conductivity. Strips that are substantially perpendicular to the flow direction direct heat from the heater to the sides of the membrane, causing a large proportion of the heat that would otherwise drive heat flows to be dispersed and decreases inaccuracies or bias in the measured flow rate. Strips of material that are provided parallel to the flow direction act to direct heat from the heater along the direction of flow. This increases the proportion of heat that flows along this axis and guides the flow and hence reduces the proportion of heat available to drive heat flows that cause inaccuracies and bias in the measured flow rates. 17-. (canceled)8. A calorimetric flow meter comprising: a pathway along which a fluid may flow in a particular direction; a primary heating means for heating the fluid flow; temperature sensing means provided at points upstream and downstream of the primary heating means; upstream and downstream heating means provided upstream and downstream of the primary heating means; and a control means comprising means operable to: monitor the fluid temperature at the upstream and downstream points; adjust the power supplied to each of the upstream and downstream heaters to maintain a substantially equal temperature at the upstream and the downstream points; determine the difference in power supplied to said upstream and downstream heaters; and thereby determine the mass flow rate of the fluid wherein the upstream and downstream heating means are activated in alternate pulses.9. A calorimetric flow meter as claimed in wherein temperature sensing means are provided adjacent to the primary heating means.10. A calorimetric flow meter as claimed in wherein a further temperature sensing means claim 8 , ...

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Номер записи: 38
16-05-2013 дата публикации

Anemometer Detecting Thermal Time Constant of Sensor

Номер: US20130124112A1
Автор: Harry Joseph Kleeburg, Heath Dixon Stewart, Jeffrey Lynn Heath
Принадлежит: Linear Technology LLC

An anemometer and method for analyzing fluid flow is described. In one embodiment, a transistor sensor is heated by applying power to cause its base-emitter junction to rise from an ambient first temperature to a second temperature. The power is removed, and the Vbe is measured at intervals as the junction cools. The Vbe equates to a temperature of the junction. The temperature exponentially decreases, and the time constant of the decay corresponds to the fluid flow velocity. A best fit curve analysis is performed on the temperature decay curve, and the time constant of the exponential decay is derived by a data processor. A transfer function correlates the time constant to the fluid flow velocity. The transistor is thermally coupled to a metal rod heat sink extending from the package, and the characteristics of the rod are controlled to adjust the performance of the anemometer.

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Номер записи: 39
23-05-2013 дата публикации

Air flow measuring device

Номер: US20130125635A1
Автор: Keisuke Itakura
Принадлежит: Denso Corp

An air flow measuring device includes an air flow meter (AFM), a straightening grid, and a mesh member. The AFM includes an air inlet and is configured to measure a flow rate of air flowing into the air inlet. The straightening grid includes a straightening plate having only one crossing region and is disposed on an upstream side of the AFM in a flow direction of air to straighten a flow of air toward the AFM through the straightening plate. The mesh member is formed in a netted manner and is disposed between the straightening plate and the AFM.

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Номер записи: 40
23-05-2013 дата публикации

Thermal Pulse Flow Meter

Номер: US20130125643A1
Автор: Batty J. Clair, Bell David A., Rusch Blake
Принадлежит: Utah State University

An apparatus and method are disclosed for using a thermally active device as a flow meter. The flow meter may have an extremely low mass, rapid response time, and use minimal energy. The flow meter may be located near a flow-side surface of a conduit wall, flush with the surface of a wall, or within a boundary layer of a flow in a conduit. In these locations, the device may present virtually no obstruction to the flow. In certain embodiments, the device may use a resistance temperature device (RTD) heated by a known current, and then tested for resistance at a comparatively much lower (nominally zero) value. A flow rate may be calculated as a function of temperature measurements taken at different steady-state conditions. Flow rates may be so measured at any desired frequency, including very infrequently, such as seconds, minutes, or days apart. 1. A flow meter comprising:a probe configured to fit in an aperture of a conduit, the conduit configured to transmit a fluid flow and having a flow-side surface;a temperature sensor configured to measure a first steady-state temperature of the probe;a heating element configured to heat the probe to a second steady-state temperature of the probe; anda processor configured to calculate a rate of the fluid flow as a function of the first and second steady-state temperatures.2. The flow meter of claim 1 , further comprising:a boundary layer at the flow-side surface; andwherein the probe is located in the boundary layer.3. The flow meter of claim 1 , wherein the probe has a probe surface and the probe surface and the flow-side surface of the conduit form a flow surface that is substantially smooth and continuous.4. The flow meter of claim 1 , further comprising:a plug with the probe embedded therein, the plug having a plug face; andwherein the plug face is contiguous and continuous with the flow-side surface across the aperture.5. The flow meter of claim 4 , wherein:the plug forms part of a mount and the mount has an indicator ...

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Номер записи: 41
23-05-2013 дата публикации

Hot-Wire Sensor of Submillimeter Size and Associated Method of Production

Номер: US20130125644A1
Автор: Gimeno Monge Leticia, MERLEN Alain, Mortet Vincent, Pernod Philippe Jacques, Preobrazhensky Vladimir, SOLTANI Ali, TALBI Abdelkrim, Viard Romain Victor Jean
Принадлежит:

The invention relates to a submillimeter-sized hot-wire sensor () comprising a substrate (), two support rods (), a metal wire () extending between the two ends of the support rods (), and electrical contacts () disposed on the support rods, said contacts each being linked to one of the ends of the wire (). The metal wire comprises at least two layers of metal materials, one of said layers being made of a material exhibiting a residual stress under tension and the other layer being made of a material exhibiting a residual stress under compression. The thicknesses of these metal layers are adapted so as to compensate the residual stresses between the various layers. 1. A submillimeter-sized hot-wire sensor , characterized in that it comprises:a substrate;two support rods, one portion of which is deposited on the substrate and the other portion of which extends beyond said substrate in the continuation thereof;a metal wire intended to form the hot wire, this wire extending between the two ends of the support rods and comprising at least two layers of metallic materials, one of which is made of a material having a residual tensile stress and the other of which is made of a material having a residual compressive stress, the thicknesses of these metal layers being suitable for compensating for the residual stresses between the various layers in order to obtain a total residual stress of the metal wire below a limiting value;electrical contacts positioned on the support rods, said contacts each being connected to one of the ends of the wire.2. The submillimeter-sized hot-wire sensor as claimed in claim 1 , wherein the support rods are made of nanocrystalline diamond claim 1 , of silicon (Si) or of silicon carbide (SiC).3. The submillimeter-sized hot-wire sensor as claimed in claim 2 , wherein the support rods made of nanocrystalline diamond each have a thickness of less than 3 μm claim 2 , for example between 100 nm and 3 μm.4. The submillimeter-sized hot-wire sensor as ...

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Номер записи: 42
23-05-2013 дата публикации

Measuring transducer as well as measuring system formed therewith

Номер: US20130125665A1
Автор: Schuker Michael
Принадлежит: Endress + Hauser Flowtec AG

A measuring transducer comprises at least one measuring tube for carrying a flowing medium as well as a transducer housing mechanically coupled with the at least one measuring tube. The transducer housing includes: an inner shell forming a cavity accommodating the at least one measuring tube; and an outer cladding formed at least partially by means of yarn, namely cladding placed outside of the cavity and surrounding the inner shell. 116-. (canceled)17. A measuring transducer , especially a measuring transducer of the vibration-type or a magneto-inductive measuring transducer , comprising:at least one measuring tube, especially a measuring tube of metal, for carrying a flowing medium, especially a gas and/or a liquid; anda transducer housing mechanically coupled with said at least one measuring tube, wherein:said transducer housing has:an inner shell, especially one of metal, namely an inner shell forming a cavity accommodating said at least one measuring tube; andan outer cladding formed at least partially by means of yarn, especially yarn under mechanical prestress being and/or monofilament yarn, namely cladding placed outside of said cavity and surrounding said inner shell.18. The measuring transducer as claimed in claim 17 , wherein:said yarn at least partially comprises glass fiber and/or carbon fiber and/or aramid fiber.19. The measuring transducer as claimed in claim 17 , wherein:said yarn is a filament yarn, especially a monofilament yarn, a minifilament yarn or a multifilament yarn.20. The measuring transducer as claimed in claim 17 , wherein:said yarn is wound under prestress and/or multiple times around the inner shell.21. The measuring transducer as claimed in claim 17 , wherein:said yarn is elastically strained, consequently is prestressed.22. The measuring transducer as claimed in claim 17 , wherein:said inner shell hermetically seals said cavity.23. The measuring transducer as claimed in claim 17 , wherein:said inner shell has at least one ...

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Номер записи: 43
06-06-2013 дата публикации

FLOW SENSOR ASSEMBLY

Номер: US20130139584A1
Автор: Fribley Josh M., Milley Andrew J., Qasimi Mohammed Abdul Javvad
Принадлежит: HONEYWELL INTERNATIONAL INC.

A flow sensor assembly that may include features that help prevent moisture from reaching a sensor die of the flow sensor assembly. In some cases, such features may include a bypass channel that is configured to reverse the direction of the flow of fluid at least once upstream of the sensor die. In some cases, an encapsulant may cover one or more bond pads of the sensor die. In some cases, an output of the flow sensor assembly may be a raw sensor output signal produced by the one or more sensor elements of the sensor die, without significant processing of the raw sensor signal. 1. A flow sensor assembly , comprising:a housing defining an inlet, an outlet, and a flow channel extending between the inlet and the outlet, the flow channel configured to accept a flow of fluid;the housing defining a bypass channel that allows part of the flow of fluid through the flow channel to bypass part of the flow channel, the bypass channel is configured to reverse the direction of the flow of fluid in the bypass channel at least once upstream of a sensing location;a flow sensor die having two or more sense elements, one or more heater elements, and one or more bond pads operatively coupled to the two or more sense elements and the one or more heater elements, the one or more bond pads are positioned in a first region of the flow sensor die and the two or more sense elements and the one or more heater elements are positioned in a second region of the flow sensor die;the flow sensor die is secured relative to the housing at the sensing location of the bypass channel such that the two or more sense elements are in thermal communication with the flow of fluid in the bypass channel;the housing defining a partition between the first region and the second region of the flow sensor die when the flow sensor die is secured relative to the housing at the sensing location; andan encapsulant provided adjacent the first region of the flow sensor die to cover the one or more bond pads of the flow ...

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Номер записи: 44
06-06-2013 дата публикации

VELOCIMETER AND METHOD FOR MEASURING THE SPEED OF FLOW OF AN ELECTRICALLY CONDUCTING FLUID

Номер: US20130139609A1
Автор: Miralles Sophie, Pinton Jean-Francois, Plihon Nicolas, Verhille Gautier
Принадлежит: Ecole Normale Superierure de Lyon

This velocimetre for measuring the speed of flow of an electrically conducting fluid comprises: —two sensors () disposed in such a way that, in the absence of flow of the electrically conducting fluid (), the difference between the current strengths measured by the two sensors () is non zero, —a processing unit () is able to calculate the speed of flow of the CD fluid in a direction parallel to the first measurement direction () on the basis of the difference between the current strengths measured by the two sensors (). 111-. (canceled)12. An apparatus for measuring flow speed of an electrically conducting fluid , said apparatus comprising a velocimeter , wherein said velocimeter comprises a source of a primary magnetic field , said primary magnetic field having field lines that pass through said electrically conducting fluid , first and second magnetic field sensors , each of which measures corresponding first and second intensities of said magnetic field in a first measurement direction , said first and second magnetic field sensors being disposed such that , in absence of flow of said electrically conducting fluid , a difference between said first and second intensities is non-zero , and a processing unit adapted to calculate , based at least in part on said difference , a flow speed of said electrically conducting fluid in a direction parallel to said first measurement direction.13. The apparatus of claim 12 , wherein said first and second magnetic field sensors are disposed such that claim 12 , in absence of flow of said electrically conducting fluid claim 12 , said difference between said first and second intensities is greater than the smaller of said first and second intensities.14. The apparatus of claim 12 , wherein said source has a magnetization axis claim 12 , and wherein said first and second magnetic field sensors are disposed on the same side of a plane containing said magnetization axis.15. The apparatus of claim 12 , wherein said first magnetic ...

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Номер записи: 45
06-06-2013 дата публикации

ULTRASONIC FLOW METER HOUSING FORMED BY A MONOLITHIC POLYMER STRUCTURE

Номер: US20130139610A1
Автор: Laursen Peter Schmidt, Nielsen Søren Tønnes
Принадлежит: KAMSTRUP A/S

The invention relates to an ultrasonic flow meter housing and to an ultrasonic flow meter comprising a housing. The housing is a monolithic polymer structure being cast in one piece. The monolithic structure includes a straight flow tube and a cavity separated from the flow tube, where a shared wall part forms part of the wall of the flow tube and of an inside surface of the cavity. The cavity is arranged for housing at least one ultrasonic transducer at the shared wall part, and a measurement circuit operationally connected to the at least one ultrasonic transducer. In an embodiment, the cavity only has a single opening which can be sealed off by a cover. 215-. (canceled)16. The flow meter housing according to claim 1 , wherein the flow tube and the cavity are separated by a water-tight wall claim 1 , the shared wall area being part of the water-tight wall.17. The flow meter housing according to claim 1 , wherein the cavity only has a single opening.18. The flow meter housing according to claim 17 , wherein a rim of the cavity is arranged for sealed connection with a cover claim 17 , so that the cover and the cavity define an enclosure with only a single sealing area.19. The flow meter housing according to claim 1 , wherein the shared wall area comprises at least one area arranged to receive the at least one ultrasonic transducer claim 1 , the at least one area having a wall thickness adapted to allow transmission of the emitted ultrasonic wave of the ultrasonic transducer.20. The flow meter housing according to claim 1 , wherein the flow section has one or more protrusions or indentions at the inside of the flow section serving to engage with an associated measurement tube element or an ultrasonic reflector arrangement.21. The flow meter housing according to claim 1 , wherein both ends of the flow tube comprise engagement means for connection to a piping system.22. The flow meter housing according claim 1 , further comprising a metal pocket cast into the flow tube ...

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Номер записи: 46
13-06-2013 дата публикации

THERMAL FLOWMETER

Номер: US20130145840A1
Автор: Asano Satoshi, Matsumoto Masahiro, NAKANO Hiroshi
Принадлежит:

Measuring flow rate of gas based on amount of heat transfer from gas to temperature-sensing resistors, comprises: substrate having hollow space formed therethrough; an insulating film deposited on the substrate so as to cover the hollow space; a heat-generating resistor formed on the insulating film; temperature-sensing resistors arranged adjacent to the heat-generating resistor; electrodes arranged at an edge of the semiconductor substrate so electrodes are parallel to the edge; and wiring connecting the electrodes and heat-generating resistors. Thermal resistance of a first area is made almost equal to thermal resistance of a second area, first area is defined by the side of the heat-generating resistor closer to the electrodes and by the side of the hollow space closer to the electrodes, and the second area is defined by the opposite side of the heat-generating resistor and by the opposite side of the hollow space. 1. A thermal flowmeter for measuring the flow rate of gas based on the amount of heat transfer from the gas to temperature-sensing resistors , the flowmeter comprising:a substrate having a hollow space formed therethrough;an insulating film deposited on the substrate in such a way as to cover the hollow space;a heat-generating resistor formed on the insulating film;temperature-sensing resistors arranged adjacent to the heat-generating resistor;electrodes arranged at an edge of the semiconductor substrate such that the electrodes are parallel to the edge; andwiring for electrically connecting the electrodes and the heat-generating resistors,wherein the thermal resistance of a first area is almost equal to the thermal resistance of a second area, the first area being defined by a first side of the heat-generating resistor closer to the electrodes and by a first side of the hollow space closer to the electrodes, the second area being defined by a second side of the heat-generating resistor opposite the first side of the heat-generating resistor and by a ...

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Номер записи: 47
20-06-2013 дата публикации

Thermal Fluid Flow Rate Measurement Device

Номер: US20130152675A1
Автор: Hio Masayuki, Morino Takeshi, Okamoto Yuuki
Принадлежит: Hitachi Automotive Systems, Ltd.

Provided is a thermal fluid flow rate measurement device that inhibits the thermal fluid flow rate measurement device and peripheral parts from thermally affecting an intake air temperature detection element and measures an intake air temperature with high accuracy. The thermal fluid flow rate measurement device includes an auxiliary passage that is inserted into a main passage to acquire a part of an air flow in the main passage, a base member that forms a part of the auxiliary passage, a flow rate detection element that is supported by the base member and disposed in the auxiliary passage to detect the flow rate of a fluid, and a circuit section that is electrically connected to the flow rate detection element and housed in a circuit chamber formed by a mold member which is a part of the auxiliary passage. An intake air temperature detection element is disposed outside the auxiliary passage and mounted on an upstream end face of the mold member relative to the air flow to detect the intake air temperature. 1. A thermal fluid flow rate measurement device comprising:an auxiliary passage that is inserted into a main passage to acquire a part of an air flow in the main passage;a base member that forms a part of the auxiliary passage;a flow rate detection element that is supported by the base member and disposed in the auxiliary passage to detect the flow rate of a fluid; anda circuit section that is electrically connected to the flow rate detection element and housed in a circuit chamber formed by a mold member which is a part of the auxiliary passage;wherein an intake air temperature detection element is disposed outside the auxiliary passage and mounted on an upstream end face of the mold member relative to the air flow to detect an intake air temperature.2. The thermal fluid flow rate measurement device according to claim 1 , wherein the intake air temperature detection element is disposed in a dent that is mounted on an upstream end face of the mold member ...

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Номер записи: 48
20-06-2013 дата публикации

Gas Flow Rate Measurement Device

Номер: US20130152699A1
Автор: Hanzawa Keiji, Sato Ryo, Suzuki Kazunori
Принадлежит: Hitachi Automotive Systems, Ltd.

Provided is a highly accurate, highly reliable gas flow rate measurement device that provides an enlarged temperature range over which the resolution at a high temperature and at a low temperature can be increased to achieve high accuracy no matter whether the characteristics of a gas temperature detection element are nonlinear. The gas flow rate measurement device includes a plurality of resistors that are disposed in a gas flow path, a gas flow rate detection circuit that outputs a gas flow rate detection signal in accordance with the flow rate of a gas flowing in the gas flow path by detecting a current flowing in the resistors or by detecting a voltage generated in accordance with the current, and a gas temperature detection element that detects the temperature of the gas in the gas flow path. The gas flow rate detection circuit includes signal conversion means for converting a signal output from the gas temperature detection element to a signal that has a predetermined maximum output and a predetermined minimum output and is linear within a predetermined temperature range. 1. A gas flow rate measurement device comprising:a plurality of resistors that are disposed in a gas flow path;a gas flow rate detection circuit that outputs a gas flow rate detection signal in accordance with the flow rate of a gas flowing in the gas flow path by detecting a current flowing in the resistors or by detecting a voltage generated in accordance with the current; anda gas temperature detection element that detects the temperature of the gas in the gas flow path;wherein the gas flow rate detection circuit includes signal conversion means for converting a signal output from the gas temperature detection element to a signal that has a predetermined maximum output and a predetermined minimum output and is linear within a predetermined temperature range.2. The gas flow rate measurement device according to claim 1 , wherein the gas temperature detection element is connected to a ...

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Номер записи: 49
27-06-2013 дата публикации

THERMAL FLOW RATE SENSOR

Номер: US20130160540A1
Автор: Okano Hiroyuki, Shirai Takashi
Принадлежит: HORIBA STEC, CO., LTD.

A thermal flow rate sensor is provided which includes a main flow path through which a fluid flows, and a sensor flow path that branches off from the main flow path so as to cause the fluid to flow in a split flow and that is provided with a flow rate detecting mechanism configured to detect a flow rate of the fluid. The flow rate detecting mechanism includes an upstream-side coil and a downstream-side coil, each configured by using a heat-generating resistance wire wound around a sensor flow pipe forming the sensor flow path. A peak position of a temperature distribution generated in the sensor flow path by the upstream-side coil and the downstream-side coil is positioned on the upstream-side coil side relative to the middle position between the upstream-side coil and the downstream-side coil on the sensor flow path. 1. A thermal flow rate sensor comprising:a main flow path through which a fluid flows; anda sensor flow path that branches off from the main flow path so as to cause the fluid to flow in a split flow and that is provided with a flow rate detecting mechanism configured to detect a flow rate of the fluid;wherein the flow rate detecting mechanism includes an upstream-side coil and a downstream-side coil each configured by using a heat-generating resistance wire wound around a sensor flow pipe forming the sensor flow path; andwherein a peak position of a temperature distribution generated in the sensor flow path by the upstream-side coil and the downstream-side coil is positioned on the upstream-side coil side relative to a middle position between the upstream-side coil and the downstream-side coil on the sensor flow path.2. The thermal flow rate sensor according to claim 1 , comprising:an upstream-side constant temperature controlling circuit that has a bridge circuit including the upstream-side coil; anda downstream-side constant temperature controlling circuit that has a bridge circuit including the downstream-side coil.3. A thermal flow rate sensor ...

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Номер записи: 50
27-06-2013 дата публикации

Method for monitoring oscillation characteristics in a coriolis, flow, measuring device

Номер: US20130160565A1
Автор: Rémy Scherrer
Принадлежит: Endress and Hauser Flowtec AG

A method for monitoring oscillation characteristics in a Coriolis, flow measuring device and to a correspondingly formed, Coriolis, flow measuring device in the case of which an excited oscillatory system is simulated with a digital model, which has at least one fittable parameter. The simulating includes, in such case, excitating the digital model in the same manner as the oscillatory system, calculating a simulation response variable of the simulated oscillations according to the digital model, and, performed over a plurality of signal modulations, iterative conforming of the at least one, fittable parameter in such a manner that the simulation response variable interatively approaches the response variable. Furthermore, it is ascertained whether a corresponding limit value is exceeded by the at least one, interatively ascertained parameter value for the at least one, fittable parameter or by at least one variable derived from the at least one, iteratively ascertained parameter value.

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Номер записи: 51
04-07-2013 дата публикации

Flow rate detection device

Номер: US20130167626A1
Автор: Shinsuke Aoyagi
Принадлежит: Toyota Motor Corp

A flow rate detection device of the invention comprises a flow rate meter 11 for outputting an output value Vd depending on a gas flow rate and detects the gas flow rate by calculating the gas flow rate on the basis of the output value output from the flow rate meter. In this invention, it is judged if the output value output from the flow rate meter should be corrected on the basis of the flow rate of the gas passing through the flow rate meter and its change rate. When it is judged that the output value output from the flow rate meter should be corrected, the output value output from the flow rate meter is corrected and then, the gas flow rate is calculated on the basis of this corrected output value.

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Номер записи: 52
04-07-2013 дата публикации

REPLACEABLE ULTRASONIC TRANSDUCER FOR AN ULTRASONIC FLOW MEASURING DEVICE

Номер: US20130167654A1
Автор: Berger Andreas, Bezdek Michael, Ueberschlag Pierre
Принадлежит: Endress + Hauser Flowtec AG

An ultrasonic transducer for an ultrasonic flow measuring device, comprising a first housing part and a second housing part. The second housing part is axially guided in the first housing part and is so biased relative to the first housing part that, in a first state of the ultrasonic transducer, a first axial stop of the second housing part rests on a first axial stop of the first housing part, wherein, by applying, counter to the bias, a predetermined force on a second axial stop of the second housing part, the second housing part is axially shiftable, so that, in a second state of the ultrasonic transducer, the first axial stop of the second housing part is moved out of the first state. 112-. (canceled)13. An ultrasonic transducer for an ultrasonic flow measuring device , comprising:a first housing part; anda second housing part, wherein:said second housing part is axially guided in said first housing part and is so biased relative to said first housing part that, in a first state of the ultrasonic transducer, a first axial stop of said second housing part rests on a first axial stop of said first housing part; andby applying, counter to the bias, a predetermined force on a second axial stop of said second housing part, said second housing part is axially shiftable, so that, in a second state of the ultrasonic transducer, said first axial stop of said second housing part is moved out of the first state.14. The ultrasonic transducer as claimed in claim 13 , characterized wherein:said second axial stop of said second housing part is embodied as a sealing surface on a periphery of said second housing part.15. The ultrasonic transducer as claimed in claim 13 , wherein:said second housing part also has a third axial stop acting in an opposite sense to that of said first axial stop, which are arranged between said first axial stop of said first housing part and a second axial stop of said first housing part acting in a sense opposite to that of said first axial stop of ...

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Номер записи: 53
04-07-2013 дата публикации

ULTRASONIC FLOW RATE MEASUREMENT DEVICE

Номер: US20130167655A1
Автор: Fujii Yuji, Gotou Hirokazu, Ozaki Yukinori, Satou Masato
Принадлежит: Panasonic Corporation

Ultrasonic flow rate measurement device includes measurement flow path in which a fluid to be measured flows, and a pair of ultrasonic vibrators that are disposed in directions such that a propagation path of an ultrasonic wave forms a V-shape relative to measurement flow path. Moreover, the device includes measurement circuit which measures a flow rate of the fluid to be measured by measuring a propagation time of the ultrasonic wave between the pair of ultrasonic vibrators, and inlet-side rectification part which is disposed, in the inlet side of measurement flow path, to stabilize the flow of the fluid to be measured. Furthermore, the device includes outlet-side coupling part which is disposed in the outlet side of measurement flow path, and signal lead-out part which outputs a flow rate value measured with measurement circuit. 1. An ultrasonic flow rate measurement device , comprising:a measurement flow path in which a fluid to be measured flows;a pair of ultrasonic vibrators disposed in a direction such that a propagation path of an ultrasonic wave forms a V-shape relative to the measurement flow path;a measurement circuit for measuring a flow rate of the fluid to be measured, by measuring a propagation time of the ultrasonic wave between the pair of ultrasonic vibrators;an inlet-side rectification part disposed in an inlet side of the measurement flow path, for stabilizing a flow of the fluid to be measured;an outlet-side coupling part disposed in an outlet side of the measurement flow path; anda signal lead-out part for outputting a flow rate value measured with the measurement circuit.2. The ultrasonic flow rate measurement device according to claim 1 , whereina flow-path cross section of the measurement flow path has a rectangular shape,the pair of ultrasonic vibrators are disposed in a narrow side of the cross section of the measurement flow path, anda plurality of reflectors are disposed in parallel with a flow direction inside the measurement flow path ...

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Номер записи: 54
04-07-2013 дата публикации

Flow-rate measurement device

Номер: US20130167656A1
Автор: Kouichi Takemura, Yasuo Koba
Принадлежит: Panasonic Corp

A flow-rate measurement device includes a first transducer and a second transducer which are provided in a fluid flow path to transmit and receive an ultrasonic signal, a timer unit which measures a propagation time of the ultrasonic signal propagating between the first transducer and the second transducer, and a flow-rate calculation unit which executes a unit measurement step a predetermined number of times and calculates a flow rate of a fluid flowing in the fluid flow path on the basis of the propagation times measured the predetermined number of times, the unit measurement step being an operation in which a direction of transmission to reception between the first transducer and the second transducer is switched and the timer unit measures the propagation times of the ultrasonic signal in both directions. The flow-rate calculation unit measures a flow rate value of the fluid by a precise measurement step in which the unit measurement step is executed a plural number of times to calculate the flow-rate and an exploratory measurement step in which the unit measurement step is executed a smaller number of times than the number of executions in the precise measurement step to calculate the flow rate.

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Номер записи: 55
11-07-2013 дата публикации

Method and appartus for determining flow velocity

Номер: US20130174669A1
Автор: Generoso Polcaro, James Michael Korba, Lei Sui, Toan Huu Nguyen
Принадлежит: General Electric Co

A multimode flow meter can use both the time-of-transit of upstream and downstream ultrasonic signals and time for transmission of downstream-only signals to determine a flow velocity of a medium flowing through a conduit. Based on factors, such as previously computed flow velocity and signal-to-noise ratio of the upstream signal, a mode of operation may be switched and only the time for transmission of the downstream signals may be used to determine flow velocity. The multimode flow meter can computer cross-flow to reduce its effect on the determination of flow velocity.

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Номер записи: 56
18-07-2013 дата публикации

ULTRASONIC FLOWMETER APPARATUS

Номер: US20130180341A1
Автор: Murakami Eiichi
Принадлежит: ATSUDEN CO., LTD.

A conduit P is clamped within a clamping hole formed by min body , left and right side plates and top plate . The clamping hole is maintained by a locking mechanism and , and the conduit is deformed to have a substantially square cross section. Ultrasonic signal transmission and reception elements and are arranged in the main body such that an ultrasonic beam emitted from one of the elements is received by the other element after the beam is reflected by the top plate. 1. An ultrasonic flowmeter apparatus detachably secured to a conduit made of a resilient and soft material for measuring a flow rate of a fluid flowing through said conduit comprising:four plate-like members each having a flat inner surface;a hinge mechanism for coupling said plate-like members to be folded freely to constitute a clamping hole by said inner surfaces, said clamping hole having a rectangular cross sectional configuration;a clamping mechanism for maintaining the clamping hole to have the rectangular cross sectional configuration; anda pair of ultrasonic signal transmission and reception elements arranged in an inner surface of one of said four plate-like members such that the ultrasonic signal transmission and reception elements are separated in a longitudinal direction of the conduit;wherein said clamping hole is formed to have a size such that when the conduit is clamped within the clamping hole, the conduit is resiliently deformed to have a substantially rectangular cross sectional configuration and is brought into intimate contact with the inner surfaces of the plate-like members, and said ultrasonic signal transmission and reception elements are arranged at positions such that an ultrasonic beam emitted from one of the ultrasonic signal transmission and reception elements is received by the other ultrasonic signal transmission and reception element after the ultrasonic beam is reflected at a portion of an inner surface of a plate-like member which is opposed to the plate-like member ...

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Номер записи: 57
01-08-2013 дата публикации

SENSOR DEVICE FOR MEASURING THE FLOW AND/OR THE LEVEL OF A FLUID OR OF A SUBSTANCE

Номер: US20130192352A1
Автор: Lanzani Federico
Принадлежит: ISANIK S.R.L.

A sensor device and a related method for measuring the flow of a fluid and/or for detecting the presence of a substance have such respective structural and functional features as to allow reliable measurements at very reduced costs. The sensor device includes at least a temperature difference sensor based on the Seebeck thermoelectric effect and integrated in a sensor device support, together with a heating element also integrated in this support. A method for measuring the flow of a fluid and/or the presence or the level of a substance uses the sensor device. 1. A sensor device for measuring the flow of a fluid and/or the presence or level of a substance comprising: at least one first insulating support,', 'a second insulating support,', 'an inner conductive layer of a first conductive material separating the first and second insulating supports,, 'a support being equipped with a sensor of a temperature difference based on the Seebeck thermoelectric effect and being a multi-layer printed circuit board support which includes first conductive tracks which are obtained in the first and second conductive layers, and', 'second conductive tracks which are realized in the inner conductive layer', 'through and metalized holes being provided in the first and second support elements to connect the first conductive tracks with the second conductive tracks, thus creating at least one thermocouple of the sensor,', 'a heating element being also associated to the sensor and being internally realized in the multi-layer printed circuit board support in the inner conductive layer of the first conductive material., 'the first and second insulating supports having their respective exposed surfaces coated with a first conductive layer of a second conductive material and with a second conductive layer of the second conductive material,'}2. The sensor device of claim 1 , wherein the first and second insulating supports are insulating supports made of a laminated material as used in the ...

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Номер записи: 58
01-08-2013 дата публикации

ULTRASONIC TRANSDUCER FOR A FLOW MEASURING DEVICE

Номер: US20130192386A1
Автор: Berger Andreas, Bezdek Michael, Ueberschlag Pierre
Принадлежит: Endress + Hauser Flowtec AG

An ultrasonic transducer for an ultrasonic flow measuring device, comprising a first housing part having an ultrasonic window and adjoining, rotationally symmetric walls, wherein there adjoins on the walls of the first housing part, coaxially with the walls of the first housing part, a first ring as resonator, which forms an end of the first housing part. 114-. (canceled)15. An ultrasonic transducer for an ultrasonic flow measuring device , comprising:an electromechanical transducer element for producing an acoustic signal with a predetermined excitation frequency;a first housing part having an ultrasonic window and adjoining, rotationally symmetric walls; anda first ring, wherein:there adjoins on the walls of said first housing part, coaxially with the walls of said first housing part, said first ring as a resonator, which forms an end of said first housing part.16. The ultrasonic transducer as claimed in claim 15 , wherein:said first ring has an inner diameter in a range of ⅛λ to ¾λ, an outer diameter in a range of ¼λ to λ, and a width in a range of 1/100λ to ¾λ, with λ being the longitudinal wavelength of the acoustic signal in said first ring produced by the ultrasonic transducer.17. The ultrasonic transducer as claimed in claim 15 , wherein:perpendicular to the axis of said first ring, a membrane is included, which is so connected with a lateral surface of said first ring that the first end of said first housing part has a distance of at least 1/100λ to said membrane, with λ being the longitudinal wavelength of the acoustic signal in said first ring produced by the ultrasonic transducer.18. The ultrasonic transducer as claimed in claim 15 , wherein:arranged coaxially with the walls of said first housing part, is a second ring, which is connected with said first ring via said membrane.19. The ultrasonic transducer as claimed in claim 18 , wherein the separation of said first and said second rings amounts to at least 1/100λ claim 18 , with λ being the ...

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Номер записи: 59
01-08-2013 дата публикации

FLOW SENSOR

Номер: US20130192387A1
Автор: KURATA Toshinori
Принадлежит: SMC Kabushiki Kaisha

In a flow sensor, a horizontal dimension Xt between short side wall portions facing respective sides of a vortex generator is longer than a vertical dimension Yt between long side wall portions facing respective ends of the vortex generator. The short side wall portions are formed linearly or in straight lines along the vortex generator, whereas the long side wall portions are curved at a predetermined radius of curvature. 1. A flow sensor having a flow passage through which a fluid flows , a columnar vortex generator disposed transversely to a flow direction of the fluid in the interior of the flow passage , and a sensor element disposed in the interior of the flow passage further downstream in the flow direction than the vortex generator , such that , in an event that Karman vortexes are generated by the vortex generator upon flow of the fluid , the sensor element is capable of detecting a flow rate of the fluid based on a generated frequency of the Karman vortexes , wherein:a cross section of the flow passage perpendicular to the flow direction is defined by a first wall portion and a second wall portion, which face respective opposite ends of the vortex generator in an axial direction of the vortex generator, and a third wall portion and a fourth wall portion, which face respective opposite sides of the vortex generator in a widthwise direction perpendicular to the axial direction, and which connect the first wall portion and the second wall portion;a first dimension between the third wall portion and the fourth wall portion is longer than a second dimension between the first wall portion and the second wall portion;the third wall portion and the fourth wall portion are formed in substantially straight lines along the vortex generator; andthe first wall portion and the second wall portion are curved at a predetermined radius of curvature.2. The flow sensor according to claim 1 , wherein the vortex generator and the sensor element are disposed at substantially ...

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Номер записи: 60
01-08-2013 дата публикации

Fluid flow rate measuring device and water meter

Номер: US20130197831A1
Автор: Hideo Kondo, Yoshiaki Yonezawa
Принадлежит: Individual

A water meter that requires neither a smoothing capacitor of large capacitance nor a high frequency reference clock is offered. A rotation detection unit is formed to include a first coil, a first capacitor, a charging transistor, a power supply line, an activation transistor, an output buffer circuit, a DA converter, a comparator and a counter. A first LC resonant circuit is provided with the activation transistor connected in series with the first coil, the first capacitor connected in parallel with the first coil and the charging transistor for charging the first capacitor. The first LC resonant circuit is activated by turning on the activation transistor after the first capacitor is charged by turning on the charging transistor.

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Номер записи: 61
08-08-2013 дата публикации

Thermal Flow Meter

Номер: US20130199280A1
Автор: Asano Satoshi, Hanzawa Keiji, Matsumoto Masahiro, NAKANO Hiroshi
Принадлежит: Hitachi Automotive Systems, Ltd.

An object of the present invention is to provide a thermal type flow rate sensor that offers high sensitivity and improved reliability. A sensor element according to the present invention includes a semiconductor substrate, a cavity portion formed on the semiconductor substrate, a heating resistor formed on the cavity portion via an electrically insulating film, a heating temperature sensor for detecting heating temperature of the heating resistor, and a driving circuit for controlling the heating temperature of the heating resistor using the temperature detected by the heating temperature sensor. The heating temperature sensor comprises temperature-sensitive resistors having resistance values varying according to temperature and disposed upstream and downstream of a direction of flow of a fluid to be measured relative to the heating resistor and on upper and lower sides in a direction perpendicular to the direction of flow of the fluid to be measured relative to the heating resistor. 1. A thermal flow meter comprising:a subsidiary passage having an opening portion through which a fluid to be measured is to be drawn in; anda sensor element disposed in the subsidiary passage, the sensor element for measuring a flow rate of the fluid to be measured;wherein the sensor element includes:a semiconductor substrate;a cavity portion formed in the semiconductor substrate;a heating resistor formed on the cavity portion via an electrically insulating film;a heating temperature sensor for detecting heating temperature of the heating resistor; anda driving circuit for controlling the heating temperature of the heating resistor using the temperature detected by the heating temperature sensor; andwherein the heating temperature sensor comprises temperature-sensitive resistors having resistance values varying according to temperature and disposed upstream and downstream of a direction of flow of the fluid to be measured relative to the heating resistor and on upper and lower sides ...

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Номер записи: 62
08-08-2013 дата публикации

"GAS METER"

Номер: US20130199290A1
Автор: Braun Robert, Eff Ulrich, Lacher Steffen
Принадлежит: HYDROMETER GMBH

A gas meter comprising a meter housing with a gas inlet with associated connecting piece for a gas supply line and a gas outlet with associated connecting piece for a gas discharge line, wherein the meter housing () is a bellows gas meter housing in which a measuring device () comprising a housing () with an integrated micro-thermal flow measuring sensor () is arranged on the gas outlet (), which housing () is connected in a gas-tight manner to the connecting piece () on the outlet side or to the meter housing () in the area of the gas outlet (). 1. A gas meter comprising a meter housing with a gas inlet with associated connecting piece for a gas supply line and a gas outlet with associated connecting piece for a gas discharge line , wherein the meter housing is a bellows gas meter housing in which a measuring device comprising a housing with an integrated micro-thermal flow measuring sensor is arranged on the gas outlet , which housing is connected in a gas-tight manner to the connecting piece on the outlet side or to the meter housing in the area of the gas outlet.2. The gas meter as claimed in claim 1 , wherein the housing has a cylindrical connecting section claim 1 , via which it is connected to the likewise one cylindrical connecting section of the connecting piece claim 1 , projecting into the interior of the meter housing claim 1 , or directly to the housing wall having the gas outlet.3. The gas meter as claimed in claim 1 , wherein a pressure reducer is arranged in the housing and a bypass leading past the former is provided in which bypass the flow measuring sensor is arranged.4. The gas meter as claimed in claim 3 , wherein the bypass opens in the area of the connecting section on the connecting piece side and if appropriate communicates with an aperture in the connecting section on the connecting piece side or directly with the gas outlet.5. The gas meter as claimed in claim 1 , wherein the measuring device communicates with an indicating unit on the ...

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Номер записи: 63
08-08-2013 дата публикации

Single Wrapped Sensor Flow Meter

Номер: US20130199305A1
Автор: FERNALD MARK R.
Принадлежит: CIDRA CORPORATE SERVICES INC.

A signal processor receives a signal containing information about a sensor that is spirally wrapped at a known pitch or separation down a pipe having a flow; and determines a flow velocity based at least partly on the information contained in the signal received by applying an autocorrelation function that depends on a relationship between the time between a repeating pattern and the known pitch or separation of the spirally wrapped sensor. The signal processor provides a corresponding signal containing information about the flow velocity. The sensor includes a strain sensor, including a piezo-electric polymer strain sensor fabricated from PVDF, and/or two or more equally spaced spirally wound sensors. The determining includes correlating output signals of two or more equally spaced spirally wound sensors to determine a time delay, and determining the flow velocity based on the time delay and the known pitch or separation. 1. Apparatus comprising: receive a signal containing information about a sensor that is spirally wrapped at a known pitch or separation down a pipe having a flow; and', 'determine a flow velocity based at least partly on the information contained in the signal received by applying an autocorrelation function that depends on a relationship between the time between a repeating pattern and the known pitch or separation of the spirally wrapped sensor., 'a signal processor configured to2. Apparatus according to claim 1 , wherein the signal processor is configured to provide a corresponding signal containing information about the flow velocity.3. Apparatus according to claim 1 , wherein the signal processor is configured to receive the signal from a strain sensor claim 1 , including a piezo-electric polymer strain sensor fabricated from PVDF.4. Apparatus according to claim 1 , wherein the signal processor is configured to received the signal from two or more equally spaced spirally wound sensors.5. Apparatus according to claim 4 , wherein the signal ...

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Номер записи: 64
15-08-2013 дата публикации

Ultrasonic transducer for an ultrasonic flow measuring device

Номер: US20130205904A1
Автор: Andreas Berger, Michael Bezdek, Pierre Ueberschlag
Принадлежит: Endress and Hauser Flowtec AG

An ultrasonic transducer for an ultrasonic flow measuring device, comprising an electromechanical transducer element, which is prestressed against an ultrasonic window of the ultrasonic transducer by a suitable structure, wherein a first surface of the electromechanical transducer element faces the ultrasonic window, and wherein a second surface of the electromechanical transducer element lying opposite the first surface is divided into a plurality of segments, which are galvanically connected with the suitable structure for prestressing.

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Номер записи: 65
15-08-2013 дата публикации

ULTRASONIC FLOW METER WITH ZERO IMPEDANCE MEASURING ELECTRONICS

Номер: US20130205913A1
Автор: Honoré Janus, Sørensen Jens Lykke
Принадлежит: KAMSTRUP A/S

The present invention discloses an ultrasonic flow meter comprising a generator circuit and a receiver circuit electrically separated from the generator circuit. The flow meter further comprises transducer switching means for controlled connection of ultrasonic transducers to either the generator circuit or to the receiver circuit. The output impedance of the generator circuit and the input impedance of the receiver circuit are controlled to be substantially zero. 1. An ultrasonic flow meter arranged to measure a flow rate of a fluid , wherein the ultrasonic flow meter comprises:at least two ultrasonic transducers arranged for transmission and receipt of ultrasonic signals in opposite directions across a measuring distance, wherein the at least two ultrasonic transducers comprise at least a first transducer positioned at one end of the measuring distance and at least a second ultrasonic transducer positioned at the other end of the measuring distance;a transducer switch electrically connected to the at least two ultrasonic transducers;a generator circuit for controlled generation of electrical signals for transmission to the at least two ultrasonic transducers, wherein the generator circuit comprises or is connected to a signal source;a receiver circuit for receiving electrical signals from the at least two ultrasonic transducers, the receiver circuit being separate from the generator circuit, wherein the receiver circuit comprises a receiver output for connection to a detector;wherein the transducer switch is arranged for controlled functional connection of:the first ultrasonic transducer to either the generator circuit or the receiver circuit, andthe second ultrasonic transducer to either the generator circuit or the receiver circuit;so that the first ultrasonic transducer is electrically connected to the generator circuit and the second ultrasonic transducer is electrically connected to the receiver circuit, or vice versa,wherein an output impedance of the ...

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Номер записи: 66
15-08-2013 дата публикации

OFFSET COMPENSATION FOR FLOW SENSING DEVICES

Номер: US20130211767A1
Автор: FROLOV Gennadiy, GRUDIN Oleg
Принадлежит: SENSORTECHNICS GMBH

There is described herein a flow sensing device having offset compensation and an offset compensation method, the flow sensing device having two separate and independent thermal flow sensors, each containing a heater and at least one temperature-sensitive element. The components of the two thermal flow sensors are connected such that flow-dependent contributions of each sensor into a common output signal have opposite signs after passing through a subtracting node. Heating pulses are applied to the heaters of the two thermal flow sensors out of phase, and an output signal is measured for each heat pulse applied. A net output signal is then determined by calculating a difference between a last output reading and at least one previous output reading. 1. A method of offset compensation for a flow sensing device having a first thermal flow sensor with a first heater and at least a first temperature sensitive element and a second thermal flow sensor with a second heater and at least a second temperature sensitive element , the first thermal flow sensor and the second thermal flow sensor being separate and independent , measuring a same flow , and generating flow-dependent signals , the method comprising:applying heating pulses (i) to the first heater and the second heater alternatingly such that when the first heater is turned on, the second heater is turned off and when the second heater is turned on, the first heater is turned off;{'sub': 'out', 'forming an output signal Vfrom the flow-dependent signals such that contributions of the flow-dependent signals have opposite signs of sensitivity to flow{'sub': 'out', 'measuring and storing the output signal Vof the flow sensing device at each one of the heating pulses (i); and'}{'sub': net', 'out', 'out, 'determining a net output signal Vby subtracting at least one previous output signal reading V(i−1) from a last output signal reading V(i).'}2. The method of wherein determining the net output signal Vcomprises taking into ...

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Номер записи: 67
22-08-2013 дата публикации

FLOW SENSOR ASSEMBLY WITH INTEGRAL BYPASS CHANNEL

Номер: US20130213131A1
Автор: Becke Craig Scott, Ricks Lamar Floyd, Speldrich Jamie, Weichao Feng
Принадлежит: HONEYWELL INTERNATIONAL INC.

Flow sensor assemblies having increased flow range capabilities are disclosed. In one illustrative embodiment, a flow sensor assembly includes a housing with an inlet flow port, an outlet flow port, a fluid channel extending between the inlet flow port and the outlet flow port, and a bypass channel having a pair of taps fluidly connected to the fluid channel at separate locations. A flow sensor for sensing a measure related to a flow rate of a fluid flowing through the fluid channel can positioned in the bypass channel. A pressure differential between the two taps of the bypass channel can drive a fraction of a fluid flowing through the fluid channel through the bypass channel. The flow sensor assembly may be configured to achieve, control, and/or balance a desired fraction of fluid flow through the bypass channel and past the flow sensor. 120-. (canceled)21. A flow sensor assembly , comprising: a first side wall of a fluid channel, where the fluid channel extends between the inlet flow port and the outlet flow port;', 'a first side wall of a bypass channel, where the bypass channel includes an upstream tap in fluid communication with the fluid channel at a first location, and a downstream tap in fluid communication with the fluid channel at a second location;, 'a housing defining at least part of an inlet flow port and at least part of an outlet flow port, the housing having a first side and an opposing second side, with the first side having a recess formed therein that definesa cover sealingly engaged to the housing such that the cover defines a second side wall of the fluid channel and a second side wall of the bypass channel, and wherein the cover, in conjunction with the housing, collectively define the fluid channel and the bypass channel; anda flow sensor secured relative to the cover such that the flow sensor is in fluid communication with the bypass channel and is capable of measuring a flow rate of fluid flowing through the bypass channel.22. The flow ...

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Номер записи: 68
22-08-2013 дата публикации

Digital flowmeter

Номер: US20130213143A1
Автор: David W. Clarke, James H. Vignos, Manus P. Henry
Принадлежит: Invensys Systems Inc

A control and measurement system for a coriolis flowmeter having a flowtube, a driver adapted to vibrate the flowtube, and a pair of sensors adapted to generate signals indicative of movement of the flowtube when it is being vibrated by the driver, wherein the sensors are positioned relative to one another so the signals from the sensors are indicative of a mass flow rate of fluid through the flowtube. A digital drive signal generator is adapted to generate a variable digital drive signal for controlling operation of the driver. The digital drive signal generator can be adapted to cause the driver to resist motion of the flowtube during a first time period and amplify motion of the flowtube during a second time period. The digital drive signal generator can also be adapted to initiate motion of the flowtube by sending one or more square wave signals to the driver.

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Номер записи: 69
12-09-2013 дата публикации

ELECTROMAGNETIC FLOW METER

Номер: US20130238259A1
Автор: Ddoley Vince, Matsunaga Shinsuke, Mitsutake Ichiro, Okayama Yoshihiko
Принадлежит: AZBIL CORPORATION

An electromagnetic flow meter includes a measurement tube, an excitation coil, an excitation current supplying unit supplying an excitation current with an excitation frequency fex to the excitation coil, a pair of electrodes disposed inside the measurement tube, a measuring unit measuring a flow based on an emf that arises between the electrodes, a first A/D converting unit that converts the emf to a digital signal, a sampling unit sampling the digital signal, a noise evaluation value calculating unit, based on at least the sample data sampled by the sampling unit, calculating as a noise evaluation value the magnitude of the impact of a noise component owing to adherence of foreign matter to the electrodes upon the measurement of the flow, and an electrode scaling diagnosing unit determining an electrode foreign matter adherence state by comparing the noise evaluation value and a predetermined diagnostic threshold value. 1. An electromagnetic flow meter , comprising:a measurement tube, where through a fluid flows;an excitation coil;an excitation current supplying means, which supplies an excitation current with an excitation frequency fex to the excitation coil;a pair of electrodes, which is disposed inside the measurement tube;a means for measuring a flow based on an emf that arises between the electrodes;a first A/D converting means, which converts the emf to a digital signal;a sampling means, which samples the digital signal with a prescribed period;a noise evaluation value calculating means, which, based on at least the sample data sampled by the sampling means, calculates as a noise evaluation value (NF, HR) the magnitude of the impact of a noise component owing to adherence of foreign matter to the electrodes upon the measurement of the flow; and{'sub': NF', 'HR, 'an electrode scaling diagnosing means, which determines an electrode foreign matter adherence state by comparing the noise evaluation value (NF, HR) and a predetermined diagnostic threshold value ( ...

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Номер записи: 70
12-09-2013 дата публикации

ULTRASONIC MEASURING DEVICE

Номер: US20130238260A1
Автор: Fukuhara Satoshi, ITOU Rai, KOGI Fumiya, OKAMOTO Kazutoshi
Принадлежит: YOKOGAWA ELECTRIC CORPORATION

An ultrasonic measuring device that measures a flow volume of a fluid by sending an ultrasonic signal to the fluid and receiving a transmission signal or a reflection signal of the ultrasonic signal obtained from the fluid, may include: a first computing unit that performs a calculation to a first receive signal obtained by receiving the transmission signal, and determines a first flow volume indicating the flow volume of the fluid; a second computing unit that performs a correlation calculation of a second receive signal obtained by receiving the reflection signal, and determines a second flow volume indicating the flow volume of the fluid; a storage unit; and a correcting unit that outputs one of the first flow volume and the second flow volume based on a volume of air-bubbles contained in the fluid. 1. An ultrasonic measuring device that measures a flow volume of a fluid by sending an ultrasonic signal to the fluid and receiving a transmission signal or a reflection signal of the ultrasonic signal obtained from the fluid , comprising:a first computing unit configured to perform a calculation to a first receive signal obtained by receiving the transmission signal, and to determine a first flow volume indicating the flow volume of the fluid;a second computing unit configured to perform a correlation calculation of a second receive signal obtained by receiving the reflection signal, and to determine a second flow volume indicating the flow volume of the fluid;a storage unit configured to store a first correction coefficient, which is used in correcting the first flow volume, and a second correction coefficient, which is used in correcting the second flow volume; anda correcting unit configured to output one of the first flow volume, which is corrected by using the first correction coefficient stored in the storage unit, and the second flow volume, which is corrected by using the second correction coefficient stored in the storage unit, based on a volume of air- ...

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Номер записи: 71
19-09-2013 дата публикации

Flow Meter Assembly, Gate Assemblies and Methods of Flow Measurement

Номер: US20130239698A1
Автор: Aughton David John, Pearson Damien Vernon
Принадлежит: Rubicon Research Pty Ltd.

The present invention provides an acoustic flow meter assembly () for pipes or open channels, said assembly including a frame () with a predetermined geometry. The frame has at least one user accessible port (-) with the at least one user accessible port (-) adapted to receive an interchangeable cartridge () which contains at least one acoustic transducer () to measure fluid velocity through said frame (). 1. An acoustic flow meter assembly for pipes or open channels , said assembly including a frame with a predetermined geometry , said frame including at least one user accessible port , said at least one user accessible port adapted to receive an interchangeable cartridge which contains at least one acoustic transducer to measure fluid velocity through said frame.2. The acoustic flow meter assembly of claim 1 , further including a plurality of user accessible ports with an associated cartridge.3. The acoustic flow meter assembly of claim 2 , wherein said user accessible ports are located in corners of a rectangular or square orientation formed by said frame.4. The acoustic flow meter assembly of claim 3 , wherein a pair of cartridges are diagonally directed towards each other.5. The acoustic flow meter assembly of claim 1 , wherein each cartridge includes a plurality of acoustic transducers for measuring flow at predetermined depths.6. The acoustic flow meter assembly of claim 1 , wherein the claim 1 , or each cartridge has associated therewith an acoustic water level sensor.7. The acoustic flow meter assembly of claim 6 , wherein said acoustic water level sensor is releasably located within a part of the associated cartridge.8. The acoustic flow meter assembly of claim 1 , further including a hollow tube for coupling at either end to a pipeline to determine the velocity through said pipeline.9. The acoustic flow meter assembly of claim 8 , wherein each transducer is located at one end of a respective sound transmission tube and the other end opens into said hollow ...

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Номер записи: 72
19-09-2013 дата публикации

ULTRASONIC FLOW RATE MEASURING DEVICE

Номер: US20130239699A1
Автор: Fujii Yuji, Gotou Hirokazu, Ozaki Yukinori, Satou Masato, Watanabe Aoi
Принадлежит: Panasonic Corporation

An ultrasonic flow rate measuring device includes a flow path, a partition plate that is inserted from an aperture to partition the flow path into plural sections, an ultrasound transmission body, plural ultrasonic transducers that are provided in positions facing a bottom plate such that an ultrasonic wave transmitted from one of the ultrasonic transducers through the ultrasound transmission body is reflected by the bottom plate and received by the other ultrasonic transducer, a measurement circuit that measures an ultrasonic propagation time between the plurality of the ultrasonic transducers; and a calculation circuit that obtains a flow rate of the target fluid based on a signal from the measurement circuit. 1. An ultrasonic flow rate measuring device comprising:a flow path in which a target fluid flows, the flow path including a first sidewall that is provided along a flow direction of the target fluid, a second sidewall that is disposed facing the first sidewall, a bottom plate that extends from a bottom of the first sidewall to a bottom of the second sidewall, an upper wall unit that connects an upper portion of the first sidewall and an upper portion of the second sidewall, and an aperture that is provided in the upper wall unit facing the bottom plate;a partition plate that is inserted from the aperture to partition the flow path into a plurality of sections;an ultrasound transmission body that covers the aperture;a plurality of ultrasonic transducers that are provided in positions facing the bottom plate such that an ultrasonic wave transmitted from one of the ultrasonic transducers through the ultrasound transmission body is reflected by the bottom plate and received by the other ultrasonic transducer;a measurement circuit that measures an ultrasonic propagation time between the plurality of the ultrasonic transducers; anda calculation circuit that obtains a flow rate of the target fluid based on a signal from the measurement circuit.2. The ultrasonic ...

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Номер записи: 73
26-09-2013 дата публикации

Measurement arrangement and method

Номер: US20130247685A1
Автор: Jeffrey Smith, Stefan Sattler
Принадлежит: ams AG

A measurement arrangement comprises a clock generator ( 11 ) which can be coupled to an emitting ultrasonic transducer ( 13 ) and a mixing arrangement ( 12 ) for providing a first mixer output signal (SO 1 ). The mixing arrangement ( 12 ) has a first input ( 18 ) which can be coupled to a receiving ultrasonic transducer ( 14 ) and a second input ( 19 ) which is coupled to the clock generator ( 11 ).

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Номер записи: 74
10-10-2013 дата публикации

FLOW METER APPARATUS

Номер: US20130263675A1
Автор: BEN-ENOSH Erez, ISICOVICH Shlomo
Принадлежит:

A flow meter apparatus comprising: at least two magnets polarized in substantially opposite directions, mechanically coupled to a mechanical element mounted in a flow conduit and movable by a substance flowing through the flow conduit, for imparting movement from the mechanical element to the magnets, and at least two magnetic field sensors, each of the sensors deployed in a respective position next to the magnets, configured to sense a direction of a magnetic field in the position and to generate a signal indicative of the direction. 1. A flow meter apparatus comprising:at least two magnets polarized in substantially opposite directions, mechanically coupled to a mechanical element mounted in a flow conduit and movable by a substance flowing through the flow conduit, for imparting movement from the mechanical element to said magnets; andat least two magnetic field sensors, each of said sensors deployed in a respective position next to said magnets, configured to sense a direction of a magnetic field in said position and to generate a signal indicative of said direction.2. The flow meter apparatus of claim 1 , further comprising a processor claim 1 , in communication with said magnetic field sensors claim 1 , configured to calculate a parameter characterizing the flowing of the substance through the conduit claim 1 , using changes in said generated signals indicative of said directions.3. The flow meter apparatus of claim 1 , wherein said magnetic field sensor is configured to generate a first signal upon said magnetic field being a magnetic field of a first direction claim 1 , having an intensity greater than a first threshold claim 1 , until said magnetic field turns into a magnetic field of an opposite direction claim 1 , having an intensity greater than a second threshold.4. The flow meter apparatus of claim 1 , wherein said magnets rotate in a circle claim 1 , said magnetic field sensors comprise two sensors claim 1 , and each one of said sensors is deployed in ...

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Номер записи: 75
10-10-2013 дата публикации

ULTRASONIC FLOWMETER

Номер: US20130263677A1
Автор: Fujii Yuji, Miyata Hajime, Nakano Makoto, Ozaki Yukinori
Принадлежит: Panasonic Corporation

Provided is an ultrasonic flow meter capable of detecting a flow rate using measurement flow channel including layered flow channels and a pair of ultrasonic sensors and disposed on a wall surface on the same side of measurement flow channel so as to form a propagation path of ultrasonic waves utilizing reflection on flow channel inner wall surface on an opposing side, and control rod as fluid control means is disposed on an upstream side of separation plates that form a multilayer section. 1. An ultrasonic flow meter comprising:a multilayer flow channel including a plurality of layered flow channels separated by a planar separation plate, and allowing a target fluid to flow therethrough;a pair of ultrasonic sensors disposed individually at upstream and downstream of the multilayer flow channel; andflow rate detecting means operable to detect a flow rate of the target fluid based on a propagation time of ultrasonic waves between the ultrasonic sensors, whereinrod-shaped fluid control means is disposed near an upstream side of the separation plate.2. The ultrasonic flow meter according to claim 1 , whereinthe fluid control means is disposed at a substantially central position in a height of the multilayer flow channel in a direction of layers, in an orientation perpendicular to a flow of the target fluid and parallel to the separation plate.3. The ultrasonic flow meter according to claim 2 , whereinthe fluid control means is disposed at the upstream side in a distance ranging from 2 mm to 8 mm from the separation plate.4. The ultrasonic flow meter according to claim 3 , whereina cross-section of the fluid control means is circular, and a diameter of the cross-section is equal to or smaller than ½ of the height of one of the layered flow channels.5. The ultrasonic flow meter according to one of to claim 3 , wherein the pair of ultrasonic sensors are disposed on a same side surface of the layered flow channel claim 3 , and the ultrasonic waves transmitted from one of ...

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Номер записи: 76
10-10-2013 дата публикации

COUPLING ELEMENT OF AN ULTRASONIC TRANSDUCER FOR AN ULTRASONIC, FLOW MEASURING DEVICE

Номер: US20130264142A1
Автор: Kissling Beat, Muller Quirin
Принадлежит: ENDRESS & HAUSER FLOWTEC AG

A coupling element of an ultrasonic transducer suitable for mode conversion of an acoustic longitudinal wave between an in-coupling surface and an out-coupling surface of the coupling element. The coupling element has a first and second interface with a predetermined medium. A first angle between the in-coupling surface and the first interface and a second angle between the first interface and the out-coupling surface are so selected that a transverse waves fraction is reflected on the first interface to the out-coupling surface. The first angle between the in-coupling surface and the first interface and a third angle between the first interface and the second interface are so selected that a longitudinal wave fraction is reflected on the first interface for second interface. A fraction of the longitudinal waves reflected to the second interface is reflected on the second interface back into the coupling element. 114-. (canceled)15. A coupling element of an ultrasonic transducer for an ultrasonic , flow measuring device suitable for mode conversion of an acoustic longitudinal wave between an in-coupling surface and an out-coupling surface of the coupling element by reflection on a first interface of the coupling element with a predetermined medium , wherein:the coupling element has a second interface with a predetermined medium; a first angle between the in-coupling surface and the first interface and a second angle between the first interface and the out-coupling surface are so selected that a transverse waves fraction is reflected on the first interface to the out-coupling surface;the first angle between the in-coupling surface and the first interface and a third angle between the first interface and the second interface are so selected that a longitudinal waves fraction is reflected on the first interface to the second interface, and that a fraction of the longitudinal waves reflected to the second interface is reflected on the second interface back into the ...

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Номер записи: 77
17-10-2013 дата публикации

Sensor device for detecting a flow property of a fluid medium

Номер: US20130269419A1
Автор: Andreas Kaufmann, Andreas Roehler, Frank Ullrich, Hans Beyrich, Kurt Etherington, Michael Rittmann, Norbert Schneider, Uwe Konzelmann, Wolfgang Dann
Принадлежит: ROBERT BOSCH GMBH

A sensor device for detecting at least one flow property of a fluid medium. The sensor device includes at least one sensor housing, in which at least one electronic module having at least one flow sensor for detecting the flow property is accommodated. The electronic module is at least partially accommodated in at least one electronic space. Furthermore, at least one pressure sensor and at least one humidity sensor are accommodated inside the sensor housing. The pressure sensor and also the humidity sensor are at least partially accommodated in at least one sensor space, which is designed separately from the electronic space.

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Номер записи: 78
17-10-2013 дата публикации

Measurement Transducer of a Thermal Mass Flow Meter for Determining the Flow of a Medium through a Pipe and Method for Fabricating it

Номер: US20130269428A1
Автор: Barth Martin, Baur Tobias, Christodoulou Fanos, Lang Arno, Pfau Axel
Принадлежит: Endress + Hauser Flowtec AG

A measurement transducer of a thermal mass flow meter for determining the flow rate of a medium that flows through a pipe, which comprises at least one thin film resistance thermometer, which is arranged in a sheath, wherein the sheath comprises a first open end, out of which at least one cable for electrical contact with the resistance thermometer is led out of the sheath, wherein the cable in the sheath is embedded in a first fill material, at least in sections, and wherein the thin film resistance thermometer is at least partially covered by a second fill material, which is a gaseous, liquid, semi-liquid, powder or solid and in the case cited last, comprises a hardness of at most Shore A 90, and that the first fill material comprises a hardness of at most Shore D 98. 115-. (canceled)16. A measurement transducer of a thermal mass flow meter for determining the flow rate of a medium that flows through a pipe , which comprises:a sheath; said at least one cable in said sheath is embedded in a first fill material, at least in sections; and', 'said thin film resistance thermometer is at least partially covered by a second fill material, which is gaseous, liquid, semi-liquid, powder or solid and in the case cited last, comprises a hardness of at most Shore A 90, and that the first fill material comprises a hardness of at most Shore D 98., 'at least one thin film resistance thermometer, which is arranged in a said sheath, wherein said sheath includes a first open end, out of which at least one cable for electrical contact with said thin film resistance thermometer is led out of said sheath, wherein17. The measurement transducer according to claim 16 , wherein:the second fill material is air.18. The measurement transducer according to claim 16 , wherein:the first fill material and the second fill material are solid at 20° C. and 1013 mBar; anda third fill material is enclosed in said sheath between the first fill material and the second fill material.19. The measurement ...

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Номер записи: 79
17-10-2013 дата публикации

FLOW METER DEVICE

Номер: US20130269447A1
Автор: Nakabayashi Yuji, Shiba Fumikazu, Takemura Kouichi
Принадлежит: Panasonic Corporation

In a flow meter device of the present invention, a time measuring section of the flow meter device includes a first counter which starts counting at a starting point of measurement of propagation time; and a second counter which starts counting at an end point of the measurement of the propagation time, and performs counting at a higher speed than the first counter. A propagation time TO is finally obtained by subtracting time Δt which is measured by the second counter and passes from the end point until the first counter counts up, from time T which is measured by the first counter and passes from a starting point until the first counter counts up after the end point. A flow calculating section calculates a flow with high accuracy using the propagation time TO. Thus, lower electric power consumption can be achieved, and accuracy of measurement of flow can be improved. 1. A flow meter device comprising:a pair of ultrasonic transmitters/receivers which are placed at an upstream side and a downstream side, respectively, in a measurement passage;a transmission/reception switching section for performing switching of transmission/reception of the ultrasonic transmitters/receivers;a transmission section for actuating the ultrasonic transmitter/receiver at a transmission side to transmit an ultrasonic wave;a reception section for detecting the ultrasonic wave received in the ultrasonic transmitter/receiver at a reception side;a time measuring section for measuring a propagation time of the ultrasonic wave transmitted and received between the pair of ultrasonic transmitters/receivers; anda flow calculating section for calculating a flow value of the fluid based on the propagation time;wherein the time measuring section includes:a first counter which starts counting at a starting point of measurement of the propagation time; anda second counter which starts counting at an end point of the measurement of the propagation time, and performs counting at a higher speed than the ...

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Номер записи: 80
17-10-2013 дата публикации

Flow Measuring Device

Номер: US20130269448A1
Автор: Berger Andreas, Ueberschlag Pierre
Принадлежит: Endress+Hauser Flowtec AG

Flow measuring device for ascertaining flow of a measured medium flowing through a measuring tube, which flow measuring device has a first housing for protruding into the measured medium, wherein the first housing has a first surface intended to face the measured medium, wherein the flow measuring device includes a second surface for bounding the measured medium, and wherein each separation between the first surface for bounding the first housing from measured medium, the second surface for bounding the measured medium and the first surface of the first housing amounts to at least 1 mm. 19-. (canceled)10. An utrasonic , flow measuring device for ascertaining the flow of a measured medium flowing through a measuring tube , which flow measuring device , comprises:an ultrasonic transducer;a first housing of said ultrasonic transducer which protrudes into the measured medium, said first housing has a first surface intended to face the measured medium; anda second housing, which has a second surface for limiting the volume of the measured medium, wherein:said first housing is connected with said second housing via a connecting element arranged between said first housing and said second housing;said first housing and said second housing are so arranged relative to one another that a separation between any two points of said first surface and said second surface amounts to at least 0.1 mm, and each separation of said first surface from said second surface measured perpendicular to said first surface amounts to at least 0.5 mm; andeach separation of said first surface from said second surface measured perpendicular to said second surface amounts to at least 0.5 mm.11. The ultrasonic claim 10 , flow measuring device as claimed in claim 10 , wherein:each separation between any two points of said first surface and said second surface amounts to at least 2 mm, and each separation of said first surface from said second surface measured perpendicular to said first surface amounts ...

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Номер записи: 81
31-10-2013 дата публикации

Sensor device for detecting a flow property of a fluid medium

Номер: US20130283895A1
Автор: BEYRICH Hans, Etherington Kurt, KAUFMANN Andreas, KONZELMANN Uwe, Rilling Heinz, RITTMANN Michael, Schneider Norbert, Stark Andreas
Принадлежит: ROBERT BOSCH GMBH

A sensor device for detecting at least one flow property of a fluid medium, including at least one sensor housing, in which at least one electronic module having at least one flow sensor for detecting the flow property is accommodated. At least one pressure sensor and at least one humidity sensor are accommodated inside the sensor housing, at least the pressure sensor and optionally also the humidity sensor is situated inside the sensor housing independently of the electronic module. 110-. (canceled)11. A sensor device for detecting at least one flow property of a fluid medium , comprising:at least one sensor housing; andat least one electronic module having at least one flow sensor for detecting the flow property being accommodated inside the sensor housing, including at least one hot-film air mass meter chip, at least one pressure sensor is accommodated within the sensor housing, wherein at least the pressure sensor is situated inside the sensor housing independently of the electronic module.12. The sensor device of claim 11 , wherein the sensor housing has at least one electronic space claim 11 , wherein the electronic module is at least partially accommodated in the electronic space claim 11 , and wherein the pressure sensor and a humidity sensor are situated in the electronic space.13. The sensor device of claim 11 , wherein the electronic module includes a sensor carrier carrying the flow sensor and protruding out of the electronic space into at least one channel in the sensor housing claim 11 , through which the fluid medium may flow.14. The sensor device of claim 11 , wherein the electronic module and the pressure sensor as well as also a humidity sensor are accommodated on different assembly planes inside the sensor housing.15. The sensor device of claim 11 , wherein the sensor housing has at least one pressure opening claim 11 , including at least one pressure socket claim 11 , the pressure sensor being accommodated inside the sensor housing so that it may ...

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Номер записи: 82
31-10-2013 дата публикации

Method for operating a thermal, flow measuring device

Номер: US20130283904A1
Автор: ARNOLD Martin, Wagner Michel
Принадлежит: Endress + Flowtec AG

A thermal, flow measuring device and method for measuring the flow of a measured medium. During a heating phase of predetermined length a constant heating current of a first electrical current source flows through a first resistor. During a first measuring phase of predetermined length a constant measurement current of a second electrical current source flows through the first resistor. During the first measuring phase a first voltage falls across the first resistor, wherein during a second measuring phase of predetermined length during the first measuring cycle the constant measurement current of the second electrical current source flows through a second resistor. During the second measuring phase a second voltage falls across the second resistor, wherein during the heating phase the constant heating current of the first electrical current source flows through a shunt resistor, wherein during the heating phase a fifth voltage falls across the shunt resistor, wherein at least the first voltage, the second voltage and the fifth voltage are utilized for calculating the flow and wherein during the first measuring phase the constant heating current of the first electrical current source flows through a bypass resistor. 18-. (canceled)9. A thermal , flow measuring device for measuring the flow of a measured medium through a measuring tube , comprising:a first electrical current source;a second electrical current source;an electrical circuit, which has a first resistor and a second resistor, each of which is arranged in a housing bordering the lumen of the measuring tube, and at least one switch, which is switchable such that, in a first switch position, said first resistor is connected in series with said first electrical current source, in a second switch position, said first resistor is connected in series with said second electrical current source, and, in a third switch position, said second resistor is connected in series with said second electrical current source, ...

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Номер записи: 83
31-10-2013 дата публикации

Solution processing apparatus, solution processing method, and non-transitory computer-readable recording medium

Номер: US20130283929A1
Автор: Ryoji ANDO, Takami Satoh
Принадлежит: Tokyo Electron Ltd

According to an embodiment of the present disclosure, an apparatus is configured to perform a solution process by supplying a processing solution from a processing solution supply source to the substrate held on a substrate holder via a flow path member and a nozzle at a flow rate equal to or less than 1 mL/sec. The apparatus includes a solution transfer unit configured to transfer the processing solution to the nozzle, and mounted to the flow path member, and an ultrasonic flowmeter mounted to the flow path member at a downstream side from the solution transfer unit. In this embodiment, a lower limit of a flow rate range which is measured by the ultrasonic flowmeter is equal to or less than 1 mL/sec.

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Номер записи: 84
31-10-2013 дата публикации

Ultrasonic, Flow Measuring Device

Номер: US20130283930A1
Автор: Oliver Berberig
Принадлежит: Endress and Hauser Flowtec AG

An ultrasonic, flow measuring device, comprising an ultrasonic transducer in a bore of a measuring tube, which ultrasonic transducer has an ultrasound window, wherein a guide vane is inserted into the bore of the measuring tube in front of the ultrasound window and perpendicular to the ultrasound window of the ultrasonic transducer.

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Номер записи: 85
31-10-2013 дата публикации

ELECTROMAGNETIC FLOWMETER AND SELF-DIAGNOSING METHOD OF EXCITING CIRCUIT UNIT THEREOF

Номер: US20130289897A1
Автор: HIGUCHI Takashi, Nakamura Takaki, Yamaguchi Yuichiro
Принадлежит: KABUSHIKI KAISHA TOSHIBA

An electromagnetic flowmeter using a square wave excitation method includes a differential amplifier which outputs a detection signal; an analog-digital converter which converts the detection signal into a digital detection signal; a timing control circuit which generates a sampling signal for sampling the digital detection signal; an calculation unit which executes a flow rate calculation process and a abnormality judging process at a same time. The flow rate calculation process acquires a flow velocity output signal by sampling the digital detection signal in a flat portion in a positive/negative excitation section. The abnormality judging process acquires a differential output signal by sampling the digital detection signal in a rising/falling portion in the positive/negative excitation section, and obtains a differential noise from the flow velocity output signal and a differential output signal, and judges abnormality of the exciting current by comparing a differential noise with a detection threshold level. 1. An electromagnetic flowmeter which applies a magnetic field to a fluid in a measurement pipe and which processes a detection signal based on a voltage which is generated between a pair of electrodes which is arranged in the measurement pipe in a direction which intersects perpendicularly to an application direction of the magnetic field and intersects perpendicularly to a tube axis of the measurement pipe , and obtains a flow rate of the fluid , the electromagnetic flowmeter comprising:an exciting circuit unit which has an exciting coil to generate the magnetic field and an exciting circuit to send a square wave exciting current through the exciting coil;a differential amplifier which detects the voltage generated between a pair of the electrodes and outputs a detection signal;an analog-digital converter which changes the detection signal from the differential amplifier into a digital signal and outputs a digital detection signal;a timing control circuit ...

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Номер записи: 86
14-11-2013 дата публикации

FLOW SENSOR

Номер: US20130298666A1
Автор: Gaal Martin, Niessner Georg, Polly Stefan, Rohm Mathias
Принадлежит:

A flow sensor for direct measurement of mass flow that includes a rigid, electrically conductive carrier part and a sensor element that is connected to the carrier part via electrically conductive connections. The sensor element includes a plate-like carrier substrate on which a temperature sensor and a heating element are disposed. The sensor element also includes a stable encapsulation, which partially surrounds the sensor element and the carrier part in form-locking fashion. The sensor element also includes a first region on a top side of the sensor element that is not covered by the encapsulation and a second region of an underside of said sensor element that is not covered by the encapsulation. The mass flow to be measured can circulate around the first region and the second region without hindrance. 1. A flow sensor for direct measurement of mass flow , comprising:a rigid, electrically conductive carrier part;a sensor element, which is connected to said carrier part via electrically conductive connections, said sensor element comprising a plate-like carrier substrate on which a temperature sensor and a heating element are disposed; anda stable encapsulation, which partially surrounds said sensor element and said carrier part in form-locking fashion; and a first region on a top side of said sensor element that is not covered by said encapsulation; and', 'a second region of an underside of said sensor element that is not covered by said encapsulation, wherein a mass flow to be measured can circulate around said first region and said second region without hindrance., 'wherein said sensor element comprises;'}2. The flow sensor according to claim 1 , wherein said sensor element extends along a longitudinal axis of said flow sensor; andvertically to said longitudinal axis, on a side adjacent to said sensor element, a region of said encapsulation is embodied as a leading edge for said mass flow to be measured.3. The flow sensor according to claim 2 , wherein on a ...

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Номер записи: 87
28-11-2013 дата публикации

ULTRASONIC FLOW RATE MEASUREMENT DEVICE

Номер: US20130312537A1
Автор: Fujii Yuji, Miyata Hajime, Nakano Makoto, Ozaki Yukinori
Принадлежит: Panasonic Corporation

An ultrasonic flow rate measurement device includes a measurement channel, through which a fluid to be measured flows; and a sensor fixing casing having openings formed in the measurement channel and sensor fixing cavities communicating with the openings. Moreover, the ultrasonic flow rate measurement device includes a pair of ultrasonic sensors contained in the sensor fixing cavities, for measuring the flow rate of the fluid to be measured; and a flow rate measuring unit for detecting the flow rate based on an ultrasonic wave propagation time between the pair of ultrasonic sensors. Furthermore, the ultrasonic flow rate measurement device includes a suppressing member formed at each of the openings, for suppressing the fluid to be measured from intruding into each of the sensor fixing cavities, wherein the suppressing member is molded integrally with the sensor fixing casing. 1. An ultrasonic flow rate measurement device comprising:a measurement channel, through which a fluid to be measured flows;a sensor fixing casing having openings formed in the measurement channel and sensor fixing cavities communicating with the openings;a pair of ultrasonic sensors contained in the sensor fixing cavities, for measuring a flow rate of the fluid to be measured;a flow rate measuring unit for detecting the flow rate based on an ultrasonic wave propagation time between the pair of ultrasonic sensors; anda suppressing member formed at each of the openings, for suppressing the fluid to be measured from intruding into each of the sensor fixing cavities,wherein the suppressing member is molded integrally with the sensor fixing casing.2. An ultrasonic flow rate measurement device according to claim 1 ,wherein the sensor fixing cavity and the opening are molded with a slider die, and further, the suppressing member is molded by using slits formed at a tip of the slider die.3. An ultrasonic flow rate measurement device according to claim 1 ,wherein the tip of the slider die has a same ...

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Номер записи: 88
05-12-2013 дата публикации

MICRO FLOW SENSOR

Номер: US20130319105A1
Автор: TANAKA Hiroaki, TANAKA Yoshiaki, TERAO Minako
Принадлежит:

A micro flow sensor includes: a flow path through which a fluid to be measured flows; a detection unit having a heater configured to heat the fluid to be measured in the flow path and temperature sensors configured to measure temperature of a fluid to be measured in the flow path; an arithmetic unit configured to measure a flow rate of the fluid to be measured flowing through the flow path based on the temperature of the fluid to be measured, measured by the temperature sensors; and a narrowed portion disposed on an upstream side of the detection unit in the flow path for narrowing the flow path. 1. A micro flow sensor , comprising:a flow path through which a fluid to be measured flows;a detection unit having a heater configured to heat the fluid to be measured in the flow path and temperature sensors configured to measure temperature of a fluid to be measured in the flow path;an arithmetic unit configured to measure a flow rate of the fluid to be measured flowing through the flow path based on the temperature of the fluid to be measured, measured by the temperature sensors; anda narrowed portion disposed on an upstream side of the detection unit in the flow path for narrowing the flow path.2. The micro flow sensor according to claim 1 , wherein the temperature sensors include upstream sensors disposed on an upstream side of the heater and downstream sensors disposed on a downstream side of the heater.3. The micro flow sensor according to claim 2 , wherein a distance between the upstream sensors and the heater is equal to a distance between the downstream sensors and the heater.4. The micro flow sensor according to claim 2 , whereinthe upstream sensors include a first upstream sensor and a second upstream sensor,the downstream sensors include a first downstream sensor and a second downstream sensor,a distance between the first upstream sensor and the heater is equal to a distance between the first downstream sensor and the heater, anda distance between the second ...

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Номер записи: 89
12-12-2013 дата публикации

Ultrasonic Flow Meter

Номер: US20130327155A1
Автор: Drachmann Jens
Принадлежит: MIITORS APS

An ultrasonic flow meter is disclosed comprising at least one ultrasonic transducer, wherein the transducer comprises a piezoelectric disc, a nonconductive polymeric material and an electrically conductive layer between the piezoelectric disk and the nonconducting polymeric material. 1. An ultrasonic flow meter comprising at least one ultrasonic transducer , wherein the transducer comprises a piezoelectric disc , a nonconductive polymeric material and an electrically conductive layer between the piezoelectric disk and the nonconducting polymeric material.2. The ultrasonic flow meter according to claim 1 , further comprising at least two ultrasonic transducers claim 1 , wherein each of the transducers comprises a piezoelectric disc claim 1 , a nonconductive polymeric material and an electrically conductive layer between the piezoelectric disk and the nonconducting polymeric material.3. The ultrasonic flow meter according to claim 2 , wherein the nonconducting polymeric material of the at least two transducers comprises one monolithic piece of material.4. The ultrasonic flow meter according to claim 2 , wherein the electrically conductive layers of the at least two transducers are electrically connected by a connecting electrically conductive layer deposited on the nonconducting polymeric material.5. The ultrasonic flow meter according to claim 1 , wherein the nonconducting polymeric material comprises a part of a housing for an electronic circuit.6. The ultrasonic flow meter according to claim 5 , wherein the housing comprises a hermetic enclosure containing the one or two transducers as well as the electronic circuit.7. The ultrasonic flow meter according to claim 1 , wherein the nonconducting polymeric material comprises a composite material reinforced by fibres.8. The ultrasonic flow meter according to claim 1 , wherein the electrically conductive layer is deposited on the nonconducting polymeric material using vapour deposition.9. The ultrasonic flow meter ...

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Номер записи: 90
26-12-2013 дата публикации

FLUID VISUALISATION AND CHARACTERISATION SYSTEM AND METHOD; A TRANSDUCER

Номер: US20130345994A1
Автор: Haldenwang Rainer, Kotze Reinhardt, Wiklund Johan
Принадлежит:

A fluid visualization and characterisation system includes a measuring section with a housing defining a fluid flow path for fluid flow. The measuring section includes one or more transducers to emit ultrasonic signals into the fluid flow, and at least one receiver to receive reflections of the ultrasonic signal from reflectors in the fluid flow. The system includes a memory for storing data and a processor operatively connected to the memory. The processor comprises several modules. A velocity estimating module is configured to apply one or more velocity estimation algorithms to received reflections of the ultrasonic signal, or data indicative thereof, to determine a velocity profile of the fluid flow. A deconvolution module is configured to apply a deconvolution algorithm at least to the determined velocity profile to determine a true velocity profile of the fluid flow. A fluid visualization and characterisation module is configured to determine characteristics of the fluid and/or fluid flow in by using the determined velocity profile and/or the true velocity profile. 1. A fluid visualization and characterisation system comprising: at least one transducer configured to generate and emit an ultrasonic signal into the fluid flow in the means defining the fluid flow path and arranged to be used in conjunction with a delay line element in contact with an outer wall of said means defining a fluid flow path in a non-invasive measurement configuration; and', 'a receiver configured to receive reflections of the ultrasonic signal emitted by the at least one delay line transducer from reflectors in the fluid flow;, 'a measuring section comprising a housing having a means defining a fluid flow path for fluid flow, the measuring section includinga memory for storing data; and a velocity estimating module configured to apply one or more velocity estimation algorithms to received reflections of the ultrasonic signal, or data indicative thereof, to determine a velocity profile ...

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Номер записи: 91
26-12-2013 дата публикации

PROCESS LIQUID FLOWMETER

Номер: US20130345996A1
Автор: Ando Ryoji, Satoh Takami, Uchimura Koji
Принадлежит:

A flowmeter of the present invention is adapted to measure a flow velocity of a process liquid flowing through a supply pipe, and includes: a pair of ultrasonic oscillators located with a spacing therebetween of a predetermined distance along a flow direction of the supply pipe; a flow velocity calculating part calculating a flow velocity of the process liquid based on a first arrival time elapsed for an ultrasonic wave generated from one of the pair of ultrasonic oscillators to arrive at the other of the pair of ultrasonic oscillators and a second arrival time elapsed for an ultrasonic wave generated from the other of the pair of ultrasonic oscillators to arrive at the one of the pair of ultrasonic oscillators; and a bubble inclusion determining part determining, based on a time-varying amount of the calculated process liquid flow velocity, whether air bubbles are included in the process liquid. 1. A process liquid flowmeter adapted to measure a flow velocity of a process liquid flowing through a supply pipe , comprising:a pair of ultrasonic oscillators located with a spacing therebetween of a predetermined distance along a flow direction of the supply pipe;a flow velocity calculating part calculating a flow velocity of the process liquid based on a first arrival time elapsed for an ultrasonic wave generated from one of the pair of ultrasonic oscillators to arrive at the other of the pair of ultrasonic oscillators and a second arrival time elapsed for an ultrasonic wave generated from the other of the pair of ultrasonic oscillators to arrive at the one of the pair of ultrasonic oscillators;a bubble inclusion determining part determining, based on a time-varying amount of the calculated flow velocity of the process liquid, whether air bubbles are included in the process liquid; anda flow rate calculating part calculating a flow rate based on the flow velocity calculated by the flow velocity calculating part and a cross-sectional area of the supply pipe.2. The ...

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Номер записи: 92
02-01-2014 дата публикации

METHOD OF ULTRASONIC FLOW MEASUREMENT AND DEVICE FOR THE IMPLEMENTATION OF THE METHOD

Номер: US20140000339A1
Автор: Funck Bernhard
Принадлежит: FLEXIM FLEXIBLE INDUSTRIEMESSTECHNIK GMBH

A method of ultrasonic clamp-on flow measurement according to the transit time difference method and apparatus for the implementation of the method, wherein the electromechanical transducer element of at least one of the two acoustic transducers is comprised of at least two array elements and a correction factor is determined by comparing the transit times between the acoustic transducers while using different array elements. 1. Method of ultrasonic clamp-on flow measurement using two acoustic transducers with transducer elements installed on a measuring pipe , where at least one transducer element is comprised of at least two array elements , the method comprising , [{'b': '1', 'a. measurement of a transit time t between a transducer element of a first acoustic transducer and a first array element of a second acoustic transducer,'}, {'b': '2', 'b. measurement of a transit time t between the transducer element of the first acoustic transducer and a second array clement of the second acoustic transducer, and'}, {'b': 1', '2, 'c. calculation of a time difference delta_tc between the transit times t and t, and'}, 'determining a calibration factor Kaf using the calculated time difference delta_tc, and', 'in a subsequent operating phase, using the calibration factor Kaf for measurement of a volumetric flow rate Q in order to compensate for the acoustic influence of the measuring pipe., 'in an analysis phase carrying out the following steps'}2. Method of ultrasonic clamp-on flow measurement using two acoustic transducers with transducer elements installed on a measuring pipe , where at least one transducer element is comprised of at least two array elements , the method comprising ,{'b': '1', 'in an analysis phase, calculating a cross-correlation function of at least two received signals, where a first received signal (s) is a signal emitted by the transducer element of a first acoustic transducer and received and digitized by a first array element of a second acoustic ...

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Номер записи: 93
02-01-2014 дата публикации

OPERATING A THERMAL ANEMOMETER FLOW METER

Номер: US20140000359A1
Автор: Burton Bruce B., Kurz Daniel R.
Принадлежит: LOS ROBLES ADVERTISING, INC.

An operating mode for a thermal anemometer flow sensor is provided so the flow sensor is operable in the presence of a high level of liquid mist without a significant error in flow reading from the liquid mist. 1: A method to operate a thermal anemometer flow sensor to measure a property of a stream , comprising:heating a heated probe of the sensor to a temperature of 100 to 1,000° C. greater than a temperature of the stream; anddetermining the property of the stream by measuring a heat loss from the heated probe.2: The method of claim 1 , wherein the heated probe is heated to a temperature of 200 to 600° C. greater than the temperature of the stream.3: The method of claim 1 , further comprising detecting the temperature of the stream with a non-heated probe of the sensor.4: The method of claim 1 , wherein the sensor is operated in a constant DeltaT mode where the heated probe is kept at a constant temperature above the temperature of the stream.5: The method of claim 1 , wherein the sensor is operated in a constant power mode where the heated probe is kept at a constant power.6: The method of claim 1 , further wherein the sensor is operated in a constant current mode where a current to the heated probe is kept constant.7: The method of claim 1 , further wherein the sensor is operated in a constant temperature mode where the heated probe is kept at a constant temperature.8: The method of claim 1 , wherein the property comprises a flow rate or a flow velocity.9: A flow meter to measure a property of a stream claim 1 , comprising:a thermal anemometer sensor including a heated probe; heat the heated probe to a temperature of 100 to 1,000° C. greater than a temperature of the stream; and', 'determining the property of the stream by measuring a heat loss from the heated probe., 'a controller configured to10: The meter of claim 9 , wherein the heated probe is heated to a temperature of 200 to 600° C. greater than the temperature of the stream.11: The meter of claim 9 , ...

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Номер записи: 94
09-01-2014 дата публикации

FLOW SENSOR

Номер: US20140007670A1
Автор: Ike Shinichi, NAKANO Seishi
Принадлежит: AZBIL CORPORATION

A flow sensor includes a base made of glass, a substrate made of glass and disposed on an upper surface of the base, a flow velocity detection unit including an electrical resistance element and disposed on an upper surface of the substrate, and an electrode that penetrates the substrate and is electrically connected to the electrical resistance element. 1. A flow sensor , comprising:a base made of glass;a substrate made of glass and disposed on an upper surface of the base;a flow velocity detection unit including an electrical resistance element, the flow velocity detection unit being disposed on an upper surface of the substrate; andan electrode that penetrates the substrate and is electrically connected to the electrical resistance element.2. The flow sensor according to claim 1 , further comprisinga conducting member disposed inside the base and electrically connected to the electrode.3. The flow sensor according to claim 1 , whereinthe upper surface of the base and a back surface of the substrate are bonded to each other with an adhesive.4. The flow sensor according to claim 3 , whereinthe adhesive is a fluororesin-based adhesive.5. The flow sensor according to claim 1 , whereinthe upper surface of the base and a back surface of the substrate are bonded to each other by one of dilute hydrofluoric acid bonding, room temperature activation bonding, and diffusion bonding.6. The flow sensor according to claim 1 , whereinthe base and the substrate have the same coefficient of thermal expansion.7. The flow sensor according to claim 1 , whereinthe base is made of one of quartz glass and borosilicate glass.8. The flow sensor according to claim 1 , whereinthe substrate is made of one of quartz glass and borosilicate glass.9. The flow sensor according to claim 1 , whereinthe base has a tubular shape. This application claims priority under 35 U.S.C. § 119 to Japanese Patent Application No. 2012-153606, filed on Jul. 9, 2012, the entire content of which being hereby ...

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Номер записи: 95
09-01-2014 дата публикации

Flow sensor

Номер: US20140007671A1
Автор: Shinichi Ike
Принадлежит: Azbil Corp

A flow sensor includes a flow channel body in which a flow channel is formed, and an insertion hole that is communicated with the flow channel is formed from an outer surface, a base made of glass and inserted in the insertion hole of the flow channel body, an elastic gasket disposed between the insertion hole and the base, a substrate made of glass and disposed on an upper surface of the base, a flow velocity detection unit including an electrical resistance element, disposed on an upper surface of the substrate, and positioned in the flow channel, and an electrode that penetrates the substrate and is electrically connected to the electrical resistance element.

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Номер записи: 96
09-01-2014 дата публикации

FLOW METER

Номер: US20140012518A1
Автор: DABAK ANAND, Ramamurthy Venkata Ramanan
Принадлежит:

A flow meter ultrasonically measures fluid velocity in a pipe. Ultrasonic signals received by ultrasonic transducers are digitized. The difference between two ultrasonic propagation times is determined by computing a discrete cross-correlation of the digitized received signals. Computation time is reduced by computing only a few cross-correlation values near a peak cross-correlation value. 1. A method , comprising:digitizing, by an analog-to-digital converter, first and second signals received by first and second ultrasonic transducers, respectively;computing, by a controller, a first discrete cross-correlation of the digitized first and second signals at an initial time shift;computing, by the controller, a second discrete cross-correlation of the digitized first and second signals at the time shift immediately prior to the initial time shift;computing, by the controller, a third discrete cross-correlation of the digitized first and second signals at the time shift immediately following the initial time shift; andlimiting, by the controller, the number of discrete cross-correlation values being computed to three when the discrete cross-correlation value at the initial time shift is the maximum of the three discrete cross-correlation values.2. The method of claim 1 , further comprising:determining, by the controller, an expected differential propagation time; andbasing the initial time shift on the expected differential propagation time.3. The method of claim 2 , where the expected differential propagation time is zero.4. The method of claim 2 , where the expected differential propagation time is a previously measured differential propagation time.5. The method of claim 1 , where the controller computes at most seven discrete cross-correlation values when the discrete cross-correlation value at the initial time shift is the not the maximum.6. The method of claim 1 , further comprising:computing, by the controller, an interpolation curve through the three discrete ...

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Номер записи: 97
16-01-2014 дата публикации

Chordal Gas Flowmeter with Transducers Installed Outside the Pressure Boundary, Housing and Method

Номер: US20140013859A1
Автор: Augenstein Donald R., Estrada Herbert, Freund, Gottlieb Emanuel J., Hastings Calvin R., JR. William R., Zuckerman Richard A.
Принадлежит: Cameron International Corporation

A flowmeter for detecting gas flow rates in a pipe includes a container configured to be attached to the pipe having a channel through which the gas flows, and a plurality of recesses that extend through the container and a plurality of housings. The flowmeter includes a plurality of transducers, with one transducer of the plurality of transducers disposed in each recess. The transducers transmit ultrasonic signals into and receive ultrasonic signals from the channel. The flowmeter includes a controller in electrical communication with the plurality of transducers which determines the gas flow rate through the channel by measuring transit times of signals transmitted by and received by the transducers. A housing for an ultrasonic transducer for a flowmeter which is inserted into a recess of a container that acoustically isolates the housing from the container. A method for detecting gas flow rates in a pipe. 1. A flowmeter for detecting gas flow rates in a pipe comprising:a container configured to be attached to the pipe having a channel through which the gas flows, and a plurality of recesses that extend through the container and a plurality of housings, each recess having a housing;a plurality of transducers, with one transducer of the plurality of transducers disposed in each housing in each recess, the transducers transmitting ultrasonic signals into and receiving ultrasonic signals from the channel;acoustic isolators which acoustically isolate the housings from the container; anda controller in electrical communication with the plurality of transducers which determines the gas flow rate through the channel by measuring transit times of signals transmitted by and received by the transducers.2. The flowmeter as described in wherein the ultrasonic signals transmitted and received by the transducers define a first path in a first plane and a second path in a second plane which paths cross in the channel.3. A housing for an ultrasonic transducer for a flowmeter ...

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Номер записи: 98
06-02-2014 дата публикации

ULTRASONIC TRANSDUCER AND ULTRASONIC FLOW-METER

Номер: US20140033827A1
Автор: Adachi Akihisa, Morihana Hideaki, Nakano Makoto, Ozaki Yukinori, Satou Masato
Принадлежит: Panasonic Corporation

An ultrasonic wave transmitting and receiving unit includes: a piezoelectric member supporting plate; an acoustic matching member fixed to one surface of the piezoelectric member supporting plate; a piezoelectric member fixed to the other surface. Moreover, the ultrasonic wave transmitting and receiving unit includes: an insulating vibration suppressing member integrally formed in such a manner as to cover the piezoelectric member and the piezoelectric member supporting plate, wherein the insulating vibration suppressing member has a hole reaching the piezoelectric member supporting plate. 1. An ultrasonic wave transmitting and receiving unit comprising:a piezoelectric member supporting plate;an acoustic matching member fixed to one surface of the piezoelectric member supporting plate;a piezoelectric member fixed to another surface; andan insulating vibration suppressing member integrally formed in such a manner as to cover the piezoelectric member and the piezoelectric member supporting plate, the insulating vibration suppressing member having a hole reaching the piezoelectric member supporting plate.2. An ultrasonic wave transmitting and receiving unit comprising:a topped cylindrical metal case having a top, a side wall, and a supporter extending outward from the side wall;a piezoelectric member contained at an inner surface of the top of the topped cylindrical metal case;an acoustic matching member disposed at an outer surface of the top; andan insulating vibration suppressing member integrally formed in such a manner as to cover the piezoelectric member and the topped cylindrical metal case, the insulating vibration suppressing member having a hole reaching the supporter.3. The ultrasonic wave transmitting and receiving unit according to claim 1 , wherein the hole is formed in at least three positions.4. The ultrasonic wave transmitting and receiving unit according to claim 1 , wherein the hole is formed on a side of the piezoelectric member.5. The ultrasonic ...

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Номер записи: 99
27-02-2014 дата публикации

ULTRASONIC FLOWMETER HAVING PRESSURE BALANCING SYSTEM FOR HIGH PRESSURE OPERATION

Номер: US20140053659A1
Автор: "OBrien Francis Anthony", McCarthy Finian, Minnock Kevin Peter, Quin David Francis Anthony
Принадлежит: Cameron International Corporation

A system is provided with an ultrasonic flow meter. The ultrasonic flow meter includes a first ultrasonic transducer disposed about a fluid flow path, and a pressure balancing system configured to pressure balance the first ultrasonic transducer relative to a fluid flow along the fluid flow path. 1. A system , comprising: a first ultrasonic transducer disposed about a fluid flow path; and', 'a pressure balancing system configured to pressure balance the first ultrasonic transducer relative to a fluid flow along the fluid flow path., 'an ultrasonic flow meter, comprising2. The system of claim 1 , wherein the pressure balancing system is configured to pressure balance the first ultrasonic transducer relative to the fluid flow up to a pressure of approximately 5 claim 1 ,000 psi.3. The system of claim 1 , wherein the pressure balancing system is configured to pressure balance the first ultrasonic transducer relative to the fluid flow up to a pressure of approximately 10 claim 1 ,000 psi.4. The system of claim 1 , wherein the pressure balancing system comprises a piston-cylinder assembly disposed along a fluid passage between the first ultrasonic transducer and the fluid flow path.5. The system of claim 1 , wherein the pressure balancing system comprises a bellows disposed along a fluid passage between the first ultrasonic transducer and the fluid flow path.6. The system of claim 1 , wherein the pressure balancing system comprises a fluid chamber claim 1 , the first ultrasonic transducer is disposed in the fluid chamber claim 1 , and the pressure balancing system is configured to pressure balance the fluid chamber with the fluid flow path.7. The system of claim 6 , wherein the pressure balancing system is configured to enable fluid communication between the fluid chamber and the fluid flow path.8. The system of claim 6 , wherein the pressure balancing system is configured to block fluid communication between the fluid chamber and the fluid flow path.9. The system of ...

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Номер записи: 100