СПОСОБ И УСТРОЙСТВО ДЛЯ ПОДТВЕРЖДЕНИЯ ПЕРИФЕРИЙНОГО УСТРОЙСТВА В СИСТЕМЕ УПРАВЛЕНИЯ

Представлена система регулирования уровня жидкости в технологической установке. Система регулирования уровня жидкости содержит: подвижный узел, содержащий стержень, при этом стержень подвижного узла включает в себя ближний конец и дальний конец; поплавок, прикрепленный к дальнему концу стержня; приводной механизм, функционально связанный с подвижным узлом; процессор, связанный с приводным механизмом и выполненный с возможностью перемещения поплавка с помощью подвижного узла; датчик, содержащий вход и выход, причем вход датчика функционально связан с подвижным узлом для приема входного сигнала, представляющего характеристику поплавка или рабочей среды, а выход датчика функционально связан с процессором для создания выходного сигнала, связанного с входным сигналом; запоминающее устройство, связанное с процессором; приводящий в действие модуль, сохраненный в запоминающем устройстве, который, будучи выполняемым в процессоре, приводит в действие приводной механизм; устройство вывода данных, ...

Warnvorrichtung für einen Fluidbehälter und Verfahren zur Prüfung derselben

Die Erfindung betrifft eine Warnvorrichtung (1) zur Überwachung eines Ereignisses in einem Behälter (3) mit einem Fluid (2), umfassend einen beweglichen Positionsgeber (4), dessen Position von dem Füllstand des Fluides (2) im Behälter (3) abhängig ist und eine Signaleinheit (5), die in Abhängigkeit von der Position des Positionsgebers (4) wenigstens eine Zustandsänderung erfährt, die als ein elektrisches Signal erfasst wird, sowie Verfahren zur Funktionsprüfung der Warnvorrichtung (1).Um eine verbesserte Warnvorrichtung (1) vorzuschlagen, deren Funktionstüchtigkeit auch bei selten auftretenden Ereignissen möglichst zuverlässig überprüft werden kann wird erfindungsgemäß vorgeschlagen, dass die Warnvorrichtung (1) dazu ausgebildet ist, die Zustandsänderung einer darin integrierten Signaleinheit (5) unabhängig von dem zu überwachenden Ereignis aktiv einzuleiten.

LIQUID LEVEL SENSER

... 1330410 Brake master cylinders GIRLING Ltd 22 May 1972 [11 June 1971] 27412/71 Heading F2F [Also in Division G1] A liquid level sensor is mounted in each chamber 32 of a brake tandem master cylinder reservoir 30. Each sensor has a float (15) which causes a break in an electrical circuit when the fluid level in the chamber falls and a manuallyoperable button (25) for manually breaking the circuit to check if the sensor is functioning properly. The reservoir includes an anti-surge baffle 34 integral with the top closure 33 in which the sensors are mounted.

VORRICHTUNG ZUM MESSEN DES INHALTES EINES TANKS

LIQUID LEVEL SENSOR FOR MOTOR VEHICLES

LIQUID LEVEL MEASURING SYSTEM AND METHOD

A system and method for measuring the liquid level in a tank or container is provided. The system can have a sensor string comprising a plurality of analog output hall-effect sensors and a computer readable memory containing sensor string information, a float having a magnetic field and positionable relative to the sensor string, and a controller containing at least one processing unit, at least one memory and a sensor string interface for connecting the controller to the sensor string. The system can be operative to obtain the sensor string information from the at least one memory of the sensor string, obtain a preloaded waveform indicating the output of a sensor relative to the position of the float and approximate the position of the float relative to the sensor string using the normalized output of at least one of the sensors and the preloaded waveform.

WASSERSTANDSGEBER.

Procedure and mechanism for the examination of the function of a water level sensor.

Dispositif réglable de mesure de niveau de liquide dans un réservoir et procédé d'étalonnage dudit dispositif.

Dispositif réglable de mesure de niveau de liquide dans un réservoir. Dispositif de mesure de niveau de liquide dans un réservoir, étalonné en deux points de sa fonction de transfert. Le flotteur 9a comporte des moyens pour rendre fixe sa position par rapport à un curseur 5a telle que définie par le premier étalonnage au niveau N1 et des moyens pour régler sa position par rapport au bras de liaison 8a, en fonction de l'indications du curseur 5a pour un second niveau N2 déterminé.

FLUID LEVEL INDICATING DEVICES

FLOAT OPERATED SIGNALLING DEVICE

FLUID LEVEL INDICATING DEVICES

METHOD AND SYSTEM FOR DETECTING A FAULT CONDITION IN THE MEASUREMENT OF THE LEVEL OF A MEDIUM IN A TANK

Disclosed is a method for detecting a fault condition in the measurement of the level of a medium in a tank having a floating roof. The method uses a radar level gauge to measure the level of the floating roof and a level measuring device to measure the level of the medium. The method includes recording the level of the floating roof during a defined time interval that comprises some filling/emptying cycles of the medium, recording the level of the medium during said time interval, determining the deviations between the level of the medium and the corresponding level of the floating roof, centering the deviations between the level of the medium and the level of the floating roof reduced by the thickness of the floating roof with the corresponding level data, and generating an alert message when the centered deviations exceed a tolerance threshold.

Füllstandsmeßvorrichtung, insbesondere Überfüllsicherung für einen Flüssigkeitstank

Liquid level float and apparatus for testing the same

... 862,150. Indicating liquid levels. AMERICAN DISTRICT TELEGRAPH CO. July 2, 1959 [Oct. 9, 1958], No. 22741/59. Class 123(1) A low level alarm for tanks, &c., in which the correct level must be maintained but which are difficult of access, for example, a roofmounted, fire sprinkler water storage tank for a building, comprises a float 25 mounted on a shaft 26 passing through a flexible seal on the inner face of a housing 15 secured in an aperture in a wall 19 of the tank 10. The shaft 26 carries a contact 27 which closes on a fixed contact 29 when the water stands at its normal level to energize a coil 33 at a remote station. The apparatus incorporates means for testing at the remote station the operability of the float. For this purpose a casing 20 secured to the housing 15 surrounds the float. The casing has a large aperture 30 in its underside for the entry of water and an opening 22 near its top into which is connected a conduit 21 leading from a source 35 of an inert gas such as nitrogen ...

FLOAT OPERATED SIGNALLING DEVICE

... 1287395 Liquid level indication RONALD TRIST CONTROLS Ltd 27 April 1971 [8 May 1970] 22396/70 Heading G1H [Also in Division H1] A float operated signalling device has a magnet 18 coupled to a float 10 to follow the movement thereof and is reciprocable in a non-magnetic tube 16 to positions in which it influences magnetically responsive signals devices 19, 20 outside the tube 16. A pipeline 24 is connected to the upper end of the tube 16 to supply liquid which acts on the magnet 18 or a part attached thereto which has sufficient clearance within the tube to act as an inefficient piston to move the float against the buoyancy thereof and cause the magnet 10 to operate the device 19. In Fig.2 (not shown) the float extends into a boiler and the flow from a feedpump, which may be controlled by the devices 19, 20, can be fed through valves directly into the boiler or diverted through the pipe 24 to test the operation of the device 19. The devices 19, 20 may be as described in Specification 1153297 ...

Monitoring system and method

An abatement apparatus monitoring system 2 comprises a processor 15 and a load cell 11-1, 11-2 suitable for outputting a load cell signal (SCL-1 to SCL-4, Fig. 3) to the processor. The load cell supports a waste tank 6 of an abatement apparatus (1, Fig. 1). The processor monitors a level of liquid in the tank depending on the load cell signal. The processor may have inputs for low liquid level and high liquid level sensors to calibrate low and high liquid levels respectively. The processor may output a fill control signal to initiate a fill cycle when the load cell signal indicates a level less than or equal to a lower threshold, or a drain control signal to initiate a drain cycle when the load cell signal indicates a level greater than or equal to a higher threshold. The tank may be supported by a load plate 10 mounted on guide members (21-1, Fig. 5). An abatement system (1, Fig. 1), a method of monitoring an abatement system where a load cell measures a weight of the waste tank, and a ...

IMPROVEMENTS IN LIQUID LEVEL INDICATORS FOR VEHICLE HYDRAULIC SYSTEMS

VALIDATION OF FLUID LEVEL SENSORS

Methods and systems for validating a fluid level sensor having a floating element are provided. First readings are acquired from the fluid level sensor indicative of fluid levels sensed via the floating element during a first period of operation of the fluid level sensor. A validated range of fluid levels for the fluid level sensor is determined based on the first readings. At least one second reading is acquired from the fluid level sensor during a second period of operation, subsequent to the first period of operation. A starting position of the floating element for the second period of operation is determined based on the at least one second reading. When the starting position of the floating element is within the validated range, validating the at least one second reading.

VERFAHREN UND SYSTEM ZUM ERKENNEN EINES FEHLERZUSTANDS IN DER MESSUNG DES FÜLLSTANDS EINES MEDIUMS IN EINEM TANK

Die Erfindung betrifft ein Verfahren zum Erkennen eines Fehlerzustands in der Messung des Füllstands eines Mediums (1) in einem Tank (2) mit einem Schwimmdach (3), wobei das Schwimmdach (3) auf dem Medium (1) schwimmt und vertikal in dem Tank (2) geführt wird, ein Radarfüllstandmessgerät (4) und eine Füllstandmessvorrichtung (5) bereitgestellt werden, wobei das Radarfüllstandmessgerät (4) örtlich fixiert an dem Tank (2) angebracht ist, in Richtung des Schwimmdachs (3) Radarsignale abstrahlt und die von der Oberfläche des Schwimmdachs (3) reflektierten Echosignale empfängt, und wobei die Füllstandmessvorrichtung (5) den Füllstand des Mediums (1) in dem Tank (2) misst, umfassend die folgenden Schritte:a) Erfassen und Aufzeichen von Daten, die die Höhe des Schwimmdachs (3) während einer definierten Zeitintervalls repräsentieren, wobei das definierte Zeitintervall einige Befüllungs-/Entleerungszyklen des Mediums (1) in den/aus dem Tank (2) umfasst,b) Erfassen und Aufzeichnen von Daten, die ...

NIVEAUUEBERWACHUNGSANORDNUNG

Verfahren zur Erkennung eines Tankvorgangs und Tankerkennungseinrichtung

Verfahren zur Erkennung eines Tankvorgangs an einem Kraftfahrzeug (3), wobei mit wenigstens einem Umfeldsensor (9) wenigstens eine Eigenschaft eines Umfelds (11) des Kraftfahrzeugs (3) erfasst wird, und wobei ein Tankvorgang anhand der wenigstens einen erfassten Eigenschaft erkannt wird, dadurch gekennzeichnet, dass die wenigstens eine Eigenschaft ausgewählt ist aus einer Gruppe bestehend aus einer chemischen Eigenschaft der Umgebung und einem akustischen Umfeld.

An apparatus for determining a vertical level or density of a material column

An apparatus for determining a vertical level or density profile of a material column including one or more of a granular solid, a wet granular solid, a slurry, and a suspension, the apparatus comprises: a support member 24; and at least one measurement module 26; wherein the measurement module comprises: a support arm mounted to the support member and extending outwardly from the support member; a displacer mounted to the support arm; and a force measurement device configured to measure a force attributable to a mass of the displacer mediated by a buoyancy of the displacer in the material column, wherein the measurement module has a data connection to a data processing unit for transmitting measurement data from the measurement module to the data processing unit to generate level or density information about the material column, wherein the apparatus further comprises a vibration actuator configured to vibrate material surrounding the displacer in the material column to fluidize the material ...

An apparatus for determining a vertical level or density of a material column

CALIBRATION MEANS FOR SWIMMING FULFILMENT AND MEASURERS.

LIQUID LEVEL MEASURING SYSTEM AND METHOD

A system and method for measuring the liquid level in a tank or container is provided. The system can have a sensor string comprising a plurality of analog output hall-effect sensors and a computer readable memory containing sensor string information, a float having a magnetic field and positionable relative to the sensor string, and a controller containing at least one processing unit, at least one memory and a sensor string interface for connecting the controller to the sensor string. The system can be operative to obtain the sensor string information from the at least one memory of the sensor string, obtain a preloaded waveform indicating the output of a sensor relative to the position of the float and approximate the position of the float relative to the sensor string using the normalized output of at least one of the sensors and the preloaded waveform.

Adjustable device for measuring the level of liquid in a tank and method for calibrating the said device

ADDITIONAL DEVICE FOR THE FUNCTIONAL TEST OF FLOAT-STEERED LEVEL OF LIQUID INDICATOR AND/OR - CONTROLLERS.

FLUID LEVEL MONITORING SYSTEM

A fluid level indicator wherein a float in a float chamber is responsive to the level of fluid in a vessel with which it communicates. The float carries a magnet which actuates a reed switch when the level of fluid in the float chamber reaches a predetermined level. A monitor connected to the reed switch indicates when the switch is actuated. A plunger disposed in the indicator when depressed moves the float, i.e., magnet, to actuate the reed switch regardless of the level of fluid in the float chamber whereby the monitoring system may be validated.

Verfahren zur Erkennung eines Tankvorgangs und Tankerkennungseinrichtung

Die Erfindung betrifft ein Verfahren zur Erkennung eines Tankvorgangs an einem Kraftfahrzeug (3), wobei mit wenigstens einem Umfeldsensor (9) wenigstens eine Eigenschaft eines Umfelds (11) des Kraftfahrzeugs (3) erfasst wird, und wobei ein Tankvorgang anhand der wenigstens einen erfassten Eigenschaft erkannt wird.

Improvements in liquid level indicators for vehicle hydraulic systems

A liquid level indicator 1 for a vehicle hydraulic system is mounted in a reservoir 2 and comprises a float-operated switch 5 which completes an electrical circuit when the liquid in the reservoir 2 is below a predetermined level to energise indicating means, and manually- operable means 10 for operating the switch to test the circuit. The switch 5 has a contact 6 carried by the float 7, upward movement of which is limited by retaining means 19, and contacts 23,24 carried from the reservoir 2 by a member 20 movable relative to the reservoir 2. The manually-operable means 10 is an end cap 32 which in a rest position keeps the reservoir contacts 23,24 stationary while the float contact 6 is movable. For testing, the end cap 32 is unscrewed, allowing the reservoir contacts 23,24 to move into engagement with the float contact 6, which is held stationary by the retaining means 19. A seal 30 and spring 31 bias the member 20 away from the reservoir 2. ...

DEVICE FOR MEASURING CONTENTS OF A TANK

Oil level detecting device

To determine a failure of a float switch for detecting whether or not the oil level is less than or equal to a predetermined oil level. A predetermined oil level OLth is set between a normal oil level and a minimum oil level in view of the fact that when the oil level in an oil pan is normal, the oil level is decreased from the normal oil level to the minimum oil level during a predetermined time period just after starting an engine. When a float switch is not changed from an OFF position to an ON position during the predetermined time period after starting the engine, it is determined that the float switch suffers a failure or the oil level is excessive.

DEVICE SUITABLE FOR LEVEL MEASUREMENT OF AN AQUEOUS FRACTION

FLOAT OPERATED SIGNALLING DEVICE

ADJUSTABLE DEVICE FOR MEASURING LIQUID LEVEL IN A TANK AND METHOD OF CALIBRATION OF THE DEVICE.

Liquid level float gauge calibration means

A liquid level gauge calibration means which utilizes slip clutch action between the gauge pointer shaft and the float rod. In setting the gauge range, either of said elements may be held stationary at a given point while the other element is moved to coordinate with the given point. Upon release of the element being held, the slip clutch is effective to maintain the established relationship between the two elements. A tool is used to move the slip clutch as needed for desired relative setting of the two elements.

ZUSATZEINRICHTUNG ZUR FUNKTIONSPRUEFUNG VON AUSSENLIEGENDEN SCHWIMMERGESTEUERTEN FLUESSIGKEITSSTANDANZEIGE- BZW. STEUERGERAETEN

LIQUID LEVEL LIMITER OR REGULATOR

... 1407537 Liquid level control HANS SASSERATH & CO KG 1 Nov 1973 [6 Dec 1972] 50788/73 Heading G1H [Also in Division H1] In a liquid level limiter or regulator in which a float 12 is disposed in a housing 10 connected by a nipple 14 to a vessel filled with a liquid, as soon as the liquid in the vessel reaches the housing 10 a vacuum breaker 16 allows liquid to enter the housing 10 to lift the float 12 to close off vent apertures 22 in a tube 18, by a disc 32 engaging a valve seat 20, and to actuate a switch 26 by a plate 30 engaging a pin 29. In an alternative arrangement, Fig. 2 (not shown) the switch plate is lifted off one end of a pivoted member which can then be manually operated to actuate the switch. In a further embodiment, Fig. 3 (not shown) the tube is movable in a guide tube to verify the actuation of the switch.

FAULT DETECTION SYSTEM AND METHOD FOR LIQUID LEVEL SENSING DEVICE

A method and system are described for detecting a fault of a fluid level sensing device associated with an aircraft engine, the fluid level sensing device arranged to measure a variance in a fluid level. The method comprises triggering a timer, while the timer is running, receiving a measurement indicative of the fluid level from the fluid level sensing device, resetting the timer when at least one timer-reset condition has been met, and outputting a fault signal when the timer reaches a timer threshold.

Multi-chamber calibration cup for gauging a food product dispensing device

A calibration cup for use in calibrating a quantity of a dessert dispensed from a product dispensing machine includes a body portion having an interior cavity, the interior cavity including a first chamber adjacent to at least a second chamber being disposed along a longitudinal width of the body portion, the first and the at least one second chamber being configured for receiving a quantity of the dessert from the product dispensing machine; and at least one opening on the body portion, the at least one opening being configured for receiving a nozzle coupled to the product dispensing machine; where the body portion is configured for self-aligning the first chamber and the at least a second chamber to the product dispensing machine.

INTEGRATED FLOW CONTROL VALVE WITH FLOWRATE FEEDBACK

A flow control valve assembly has at least one manifold having an inlet flow port, an outlet flow port, and a flow channel provided there between, the flow channel having an inlet chamber, a variable area chamber and an outlet chamber, with fluid flowing from the inlet flow port to the inlet chamber, the variable area chamber and the outlet chamber, in that order, before exiting the outlet flow port. The flow control valve assembly further includes a float assembly having a float extending through the flow channel and which is limited for its movement inside the variable area chamber, a connecting rod extending through the flow channel and which has an upper end that is connected to the float and a lower end that is connected to a magnet. A measuring device is positioned outside the fluid chamber at the bottom of the at least one manifold, and spaced apart from the magnet.

СПОСОБ И УСТРОЙСТВО ДЛЯ ПОДТВЕРЖДЕНИЯ ПЕРИФЕРИЙНОГО УСТРОЙСТВА В СИСТЕМЕ УПРАВЛЕНИЯ

LIQUID LEVEL INDICATORS

SELF-TEST METHODS AND SYSTEMS FOR SUBMERSIBLE PUMP SYSTEMS

The present invention relates to methods and systems for implementing a self-test for sump system components using two-way communications between a main controller and each of the system components to check system operation and status. The self-test system is designed to remotely or locally test the installation of field wiring, system functionality and performance of equipment located in an elevator pit, a transformer vault, a transformer moat, a confined space or any other pit/ditch/sump. The benefits of this technology are: 1) ensure proper installation, 2) exercise the system that might otherwise be dormant for years, 3) avoid the costs and risks associated with entering a confined space, and 4) create an easy to implement preventative maintenance program.

FLOAT OPERATED SIGNALLING DEVICE

DEVICE FOR LIMITING OR REGULATING THE LEVEL OF A LIQUID IN A RESERVOIR OR THE LIKE

Empty fuel level detection cross-check

A fuel level monitoring system for a fuel system having a primary fuel tank and a secondary fuel tank includes a fuel level sensor that is disposed within the secondary fuel tank and that generates a first signal. An empty switch is disposed within the secondary fuel tank and generates a second signal. A control module determines a condition of one of the fuel level sensor and the empty switch based on the first signal, the second signal and a plurality of signal thresholds.

Selective catalytic reduction system

A selective catalytic reduction (SCR) system that can detect whether or not a float is stuck even where a water level sensor that detects a liquid level in a stepwise manner is used, including: an urea injection quantity integrating unit that integrates an injected quantity of urea to calculate an urea injection quantity integrated value; an integrated value resetting unit that, if a detected value from detection means changes, resets the urea injection quantity integrated value; and an abnormality determination unit that, if the urea injection quantity integrated value exceeds a predetermined threshold value for determination, determines a level sensor as having an abnormality.

LIQUID LEVEL SENSING DEVICE WITH DOUBLE-LAYER FLEXIBLE TUBE AND PACKING STRUCTURE THEREOF

A liquid level sensing device and a packing structure are provided. An outer tube fastener is connected to a signal module. A protective soft tube is connected to the outer tube fastener. An end of a double-layer flexible tube is connected to the protective soft tube. The double-layer flexible tube includes a flexible conductive outer tube and a fluorine-containing plastic inner tube coaxially attached in the flexible conductive outer tube. The fluorine-containing plastic inner tube is made of a flexible material. The flexible conductive outer tube is made of a conductive flexible material to form a grounding layer. A sensing module is disposed in the fluorine-containing plastic inner tube. A magnetic floater is assembled outside the double-layer flexible tube. A hanger is connected to another end of the double-layer flexible tube. 1. A liquid level sensing device comprising:a signal module for signal processing and outputting;an outer tube fastener, mechanically connected to the signal module;a protective soft tube, mechanically connected to the outer tube fastener;a double-layer flexible tube, an end thereof being mechanically connected to the protective soft tube, comprising a flexible conductive outer tube and a fluorine-containing plastic inner tube coaxially attached in the flexible conductive outer tube, the fluorine-containing plastic inner tube being made of a flexible material, the flexible conductive outer tube being made of a conductive flexible material to form a grounding layer, and the grounding layer electrically connected to the signal module;a sensing module, disposed in the fluorine-containing plastic inner tube, and electrically connected to the signal module;a magnetic floater, assembled outside the double-layer flexible tube, and changing a detecting resistance value of the sensing module when moving; anda hanger, mechanically connected to another end of the double-layer flexible tube.2. The liquid level sensing device of claim 1 , further ...

Monitoring system and monitoring

An apparatus for determining a vertical level or density of a material column

An apparatus foe determining a vertical level or density profile of a fluid column

METHOD AND APPARATUS FOR VALIDATING A FIELD DEVICE IN A CONTROL SYSTEM

A system and method for validating the availability and operability of a liquid level control system in a process plant is provided. The liquid level control system comprises: a movable assembly including a bar, the bar of the movable assembly including a proximate end and a distal end; a displacer attached to the distal end of the bar; an actuator operatively connected to the movable assembly; a processor coupled to the actuator and capable of moving the displacer via the movable assembly; a sensor including an input and an output, the input of the sensor operatively coupled to the movable assembly for receiving an input signal representative of a characteristic of the displacer or an operating environment, the output of the sensor operatively coupled to the processor for providing an output signal associated with the input signal; a memory coupled to the processor;an actuating module stored on the memory, which when executed on the processor, actuates the actuator; an output device coupled ...

METHOD AND APPARATUS FOR VALIDATING A FIELD DEVICE IN A CONTROL SYSTEM

A system and method for validating the availability and operability of a liquid level control system in a process plant is provided. The liquid level control system comprises: a movable assembly including a bar, the bar of the movable assembly including a proximate end and a distal end; a displacer attached to the distal end of the bar; an actuator operatively connected to the movable assembly; a processor coupled to the actuator and capable of moving the displacer via the movable assembly; a sensor including an input and an output, the input of the sensor operatively coupled to the movable assembly for receiving an input signal representative of a characteristic of the displacer or an operating environment, the output of the sensor operatively coupled to the processor for providing an output signal associated with the input signal; a memory coupled to the processor;an actuating module stored on the memory, which when executed on the processor, actuates the actuator; an output device coupled ...

FLOAT OPERATED SIGNALLING DEVICE

METHOD FOR INSPECTING OPERATION OF FUEL GAUGE FOR LPG VEHICLE

To inspect a fuel gauge of an LPG vehicle, a method comprises the following steps of: calculating a reference resistance value in accordance with an amount of LPG fuel filled in the fuel tank of a vehicle; detecting a driving resistance value generated for movement of a fuel gauge to display an amount of fuel filled in the fuel tank while driving the vehicle in real time; comparing the detected driving resistance value with the reference resistance value; and giving a warning to a driver when the driving resistance value can be continuously maintained within an error range with the reference resistance value as a result of the comparison. COPYRIGHT KIPO 2017 (AA) Start (BB) End (CC) No (DD) Yes (S100) Calculating a reference resistance value in accordance with an amount of LPG fuel filled in a vehicle (S200) Detecting a driving resistance value for movement of a fuel gauge while driving the vehicle (S300) Checking whether the resistance value is within the error range of the reference resistance ...

INK SUPPLY DEVICE AND INKJET RECORDING DEVICE

In accordance with an embodiment, an ink supply device comprises an ink storage section, a float and a floating position detection device. The ink storage section is connected with an inkjet head, and stores ink to be supplied to the inkjet head. The float is arranged in the ink storage section in a floatable manner in response to a height of a liquid surface of the ink. The floating position detection device comprises a detection target arranged on the float, and a target detection section which is arranged in the ink storage section and detects that the detection target approaches. The target detection section is arranged on a wall substantially orthogonal to an axial direction of a rotating shaft of the ink storage section. An inkjet recording device of the embodiment comprises an inkjet head configured to jet ink to an image receiving medium, and the ink supply device.

Ink supply device and inkjet recording device

In accordance with an embodiment, an ink supply device comprises an ink storage section, a float and a floating position detection device. The ink storage section is connected with an inkjet head, and stores ink to be supplied to the inkjet head. The float is arranged in the ink storage section in a floatable manner in response to a height of a liquid surface of the ink. The floating position detection device comprises a detection target arranged on the float, and a target detection section which is arranged in the ink storage section and detects that the detection target approaches. The target detection section is arranged on a wall substantially orthogonal to an axial direction of a rotating shaft of the ink storage section. An inkjet recording device of the embodiment comprises an inkjet head configured to jet ink to an image receiving medium, and the ink supply device.

LIQUID LEVEL INDICATORS

LIQUID LEVEL WARNING APPARATUS

... 1517280 Liquid level detectors F A RICHMOND 23 May 1975 [17 Sept 1974 22 April 1975] 40332/74 and 16484/75 Heading G1H A liquid level indicator comprises an element such as a magnet 8 which can be moved by a float 14 in response to changes in liquid level in a tank, e.g. of a road tanker, a device such as a reed switch 28, for sensing movement of the magnet 8, visual and/or audible warning means connected to the sensing device to give a warning when the liquid reaches a desired maximum level, and testing means operable non-magnetically to simulate the maximum level. As shown the indicator can be tested by supplying compressed air to a bore 24 to raise a piston 20, 22 coupled to the magnet 8. Alternatively, the magnet 8 can be raised, for testing, by compressed air supplied to one face of a flexible diaphragm, by levers, or by a manually-gripped member attached to the magnet 8. Instead of a magnet and reed switch, the indicator may comprise a variable inductor or capacitor. The indicator ...

An apparatus for determining a vertical level or density profile of a fluid column

An apparatus for determining a vertical level or density profile of a multi-layered fluid column including at least two different liquids, comprises: an elongate vertical support member 24; and a plurality of measurement modules 26 spaced apart and supported along, the elongate vertical support member to form a vertical array of measurement modules; wherein each measurement module comprises: a support arm mounted to the elongate vertical support member and extending outwardly from the elongate vertical support member; a displacer carried on the support arm; and a force measurement device configured to measure a force attributable to a mass of the displacer mediated by a buoyancy of the displacer in the fluid column, wherein the plurality of measurement modules have a data connection to a data processing unit for transmitting measurement data from the plurality of measurement modules to the data processing unit, and wherein the data processing unit is configured to process the measurement ...

LIQUID LEVEL FLOAT GAUGE CALIBRATION MEANS

LIQUID LEVEL FLOAT GAUGE CALIBRATION MEANS

A liquid level gauge calibration means which utilizes slip clutch action between the gauge pointer shaft and the float rod. In setting the gauge range, either of said elements may be held stationary at a given point while the other element is moved to coordinate with the given point. Upon release of the element being held, the slip clutch is effective to maintain the established relationship between the two elements. A tool is used to move the slip clutch as needed for desired relative setting of the two elements.

DEVICE SUITABLE FOR LEVEL MEASUREMENT OF AN AQUEOUS FRACTION

Dispositif de mesure convenant pour la mesure de niveau d'une fraction aqueuse dans une enceinte destinée à recevoir deux fractions liquides séparées, à savoir une fraction aqueuse (Wa), et une fraction légère (Oi) de densité plus faible, située au-dessus de la fraction aqueuse, ledit dispositif de mesure comprenant : - un système à flotteur (2), taré de manière à suivre les changements de niveau de l'interface fraction aqueuse/fraction légère, - un capteur de mesure, ciblant le déplacement à la montée ou à la descente dudit système à flotteur dans ladite enceinte, délivrant un signal analogique ou numérique, représentatif de la position du flotteur dans ladite enceinte.

Boiler water level detectors operation monitoring - using tube with escape valve to enclose detector and facilitate temporary local rise in water level

METHOD FOR RADIOMETRIC LIMIT LEVEL MONITORING

The invention relates to a method for limit level monitoring using a radiometric limit switch comprising an emitter (5) that emits a beam of radiation along a beam path running at the height of the limit level to be monitored, wherein said switch is in a free state when the limit level has not been reached and is in a state of being covered by a medium when the limit level has been reached, and comprising a detector (7) placed at the end in the beam path for measuring the discrete beam intensities (I) as a function of the state of the beam path, the statistical distribution thereof in the free and covered states being defined by two separate Poisson distributions, wherein the limit switch automatically carries out a monitoring operation, in particular without previously carrying out a comparison procedure, in which at least one of the states is produced and the associated beam intensity must be measured. According to the invention, successive beam intensities (I(ti)) are measured in an ...

Method for radiometric limit level monitoring

A method for limit level monitoring with a radiometric limit switch. A detector measures discrete radiation intensities. Statistical distributions of radiation intensities in a state, free of medium, and in a state, covered by medium, are given by two Poisson distributions. In an interval successive radiation intensities are measured, a distribution of the radiation intensities, two separated Poisson distributions are identified within the distribution, based on the positions of the Poisson distributions identified within the distribution, an upper threshold value is determined for the radiation intensity, the exceeding of which upper threshold value by a radiation intensity measured following the interval means a state change into the state, free of medium, has been detected, and/or a lower threshold value is determined for the radiation intensity, the subceeding of which lower threshold value by a radiation intensity measured following the interval means a state change into the state, covered by medium, has been detected.

Liquid level float gauge calibration means

A liquid level gauge calibration means which utilizes slip clutch action between the gauge pointer shaft and the float rod. In setting the gauge range, either of said elements may be held stationary at a given point while the other element is moved to coordinate with the given point. Upon release of the element being held, the slip clutch is effective to maintain the established relationship between the two elements. A tool is used to move the slip clutch as needed for desired relative setting of the two elements.

Vorrichtung und Verfahren zur Funktionsüberprüfung einer Füllstandsensorik

Es werden eine Füllstandüberwachungsvorrichtung 10 sowie ein Verfahren zur Funktionsfähigkeitsprüfung einer Füllstandsensorik offenbart. Die Füllstandüberwachungsvorrichtung 10 umfasst einen Flüssigkeitsbehälter 12, einen Schwimmer 14, eine Sensoreinrichtung 16 und einen elektrisch ansteuerbaren Aktuator 22. Die Sensoreinrichtung 16 umfasst ein erstes Sensorelement 18, welches in einer festen Beziehung zum Schwimmer 14 angeordnet ist und ein zweites Sensorelement 20, welches in einer festen Beziehung zum Flüssigkeitsbehälter 12 angeordnet ist. Die Sensoreinrichtung 16 ist dazu eingerichtet, in Abhängigkeit eines Abstands zwischen dem ersten Sensorelement 18 und dem zweiten Sensorelement 20 ein Signal zu erzeugen. Der elektrisch ansteuerbare Aktuator 22 ist dazu eingerichtet, unabhängig von einem Füllstand des Flüssigkeitsbehälters 12 eine Veränderung des Abstands zwischen dem ersten Sensorelement 18 und dem zweiten Sensorelement 20 zu bewirken.

Improvements in float-operated electric relays

... 667,458. Actuation of switches; protective cut-out arrangements. MICAFIL AKT.-GES. May 25, 1950. No. 13137/50. Class 38 (v). Protective apparatus for electrical apparatus filled with insulating liquid and including a float 3 which falls and operates a switch 4 when gas is formed in the housing 2, may be tested by energizing an electromagnet 6 outside the housing and thereby attracting an armature 7 linked to the pivoted float. In the form shown the magnetic force acts through a non-magnetic plate 10 sealing the housing. In modifications, oil tightness is achieved by using a bellows to transmit the motion or by an oil tight cover round the magnet.

LIQUID LEVEL LIMITER OR REGULATOR

Functional Diagnosis of an Electromechanical Fill State Measuring Device

A method for the functional diagnosis of an electromechanical fill state measuring device in which a displacement element on a measuring wire is lowered into a filling material in a container such that in an equilibrium state, the weight of the displacement element minus a displacement element buoyancy, which depends upon at least one equilibrium volume, is determined to be equal to a resulting weight of the displacement element. The resulting weight is specified, and the specified resulting weight is kept constant by correspondingly changing the length of the measuring wire in the equilibrium state. The fill state of the filling material is ascertained using the length of the lowered measuring wire. In order to diagnose a function, the specified value of the equilibrium volume of the displacement element is changed, and the resulting change in the length of the measuring wire is ascertained on the basis of the constant equilibrium state of the resulting weight.

Liquid level checking system for vehicles

A liquid level checking system has a level sensor means (10, 12) for sensing whether the level of at least one kind of liquid in a reservoir is adequate or not, indicating element means (16, 18) adapted to be turned on and off such as to inform whether the liquid level is adequate or not, and an operation switch means (14) connected between the level sensor means and the indicating element means such as to selectively form a circuit for supply electric power to the indicating element means. The system also has a power supply circuit means (20) designed for supplying electric power to the indicating element means (16, 18) only when the engine is not operating. The operation switch means (14) is switchable between an indicating element means checking position for confirming safe functioning of the indicating element means and a level checking position for confirming that the liquid level sensed by the level sensor means (10 and 12) is adequate.

FLOAT OPERATED SIGNALLING DEVICE

... 1279504 Liquid level indication RONALD TRIST CONTROLS Ltd 27 April 1971 [8 May 1970] 22397/70 Heading G1H [Also in Division H1] In a float operated liquid level control device in which a float 10 moves with the water 4 in a boiler 3 to move a magnet 18 between magnet reed or moving magnetic switch units 19, 20 to indicate or actuate automatic controls to start a pump, Fig. 1 (not shown), if the water needs replenishing an auxiliary chamber 23 is provided on the connecting stem 11 between the float 10 and magnet 18 and the arrangement is such that when the water 4 reaches a high level and a test check of switch 19 is required water is fed via an auxiliary conduit 25, 28 both chamber 23 at a greater rate then such water drains through an opening 24 and the float 10 sinks to effect operation of the switch 19.

FLUID LEVEL INDICATOR WITH FLATTENED FLOAT

TANK MAINTENANCE ACCESS CHAMBER

A fuel storage system has a tank access chamber with improved monitoring, servicing and maintenance capabilities. In particular, the chamber includes a sump monitored by a liquid sensor whose proper function can be automatically checked remotely, e.g., via an electronic controller or remote manual operation. In cases where such a check indicates a need for physical inspection of the sump sensor, the present system provides for sensor removal and installation by service personnel from a location outside the tank access chamber. Thus, the present system facilitates regular inspection and routine or unplanned maintenance without the need for a person to physically enter the tank access chamber.

Two wire resistive sensor

A circuit with two terminals that receive an input current. The circuit includes a sensor, and a controller to generate a modulated signal. The circuit also includes a flyback circuit that receives the modulated signal. The flyback circuit generates a first output voltage based on the modulated signal, shunts or redistributes at least a portion of the input current, and enables the controller to regulate the input current in proportion to the modulated signal.

VERFAHREN ZUM FUNKTIONALEN TESTEN EINER FLUIDPEGELWARNANZEIGEVORRICHTUNG

Ein Testverfahren beinhaltet die folgenden Schritte: (1) Bereitstellen eines Unterdruckerzeugers; (2) Erzeugen eines Unterdrucks in einem Fluiddurchgang und einem Raum, die mit einem Führungsabschnitt eines Fluidbehälters in fluidischer Verbindung stehen, wobei ein zweites Erfassungselement an einem Führungsabschnitt des Fluidbehälters befestigt ist; (3) Weiterleiten eines Fluidstroms von dem Führungsabschnitt zu dem Raum über den Fluiddurchgang und Anziehen eines Schwimmers, der ein erstes Erfassungselement aufweist, aus einer oberen Position in eine untere Position innerhalb des Führungsabschnitts; (4) Erzeugen eines Signals über das erste und das zweite Erfassungselement, wenn sich der Schwimmer bezüglich des zweiten Erfassungselements innerhalb des Führungsabschnitts bewegt, und (5) Übertragen eines Signals zu mindestens einer von einer Steuereinheit oder einer grafischen Benutzeranzeige.

FLOAT OPERATED SWITCH ASSEMBLY

... 1473939 Liquid level sensors BESTOBELL MOBREY Ltd 18 Aug 1975 [28 Aug 1974] 37638/74 Heading G1H In a liquid level sensor comprising a float 9, armatures 10, 11 coupled by a stem 8 to rise and fall with the float, the armatures being reciprocable in a non-magnetic tube 7, a magnetically-operated switching unit 12 responsive to the position of the armature 10 to actuate an alarm 23, and a solenoid 13 for producing a magnetic field acting on armature 11 to dunk the float 9 for test purposes, the solenoid 13 is energized by an A.C. or D.C. circuit whereby the solenoid can supply a strong field, to dunk the float to operate the unit 12, and then a weaker field such that the float rises back slowly thereby avoiding a damaging impact between the armature 10 and the top of the tube 7. Although solenoid 13 may have separate winding sections to produce the different fields, preferably (as in Fig. 1) it can be energized either from a partial voltage tapping 20 or a full voltage tapping 19 of a transformer ...

FLUID LEVEL INDICATING DEVICES

... 1371733 Liquid level indication GIRLING Ltd 27 Feb 1973 [30 March 1972] 15086/72 Heading G1H [Also in Division H1] In a liquid level indicating device, such as for use with a reservoir chamber of hydraulic braking systems in motor vehicles, floats 7 are of flattened form, so that their axial depth is small compared to their lateral dimensions, and are guided by vanes 20 provided on the reservoir walls. The floats 7 engage activating members 9 to move annular bridging contacts 11 into or out of engagement with contacts 12 in a warning circuit.

METHOD AND DEVICE FOR DETERMINING THE DOSED REDUCING AGENT VOLUME IN AN SCR SYSTEM

Förfarande och anordning för bestämning av resterande volym reduktionsmedel i en behållare vid ett SCR-system

Fill-level test and measuring device

The invention concerns a filling level measuring device composed of a nonmagnetic slide tube (7) containing a switch (8) driven magnetically in contactless manner and mounted on a plate (1) sealing a container aperture, further of a float (23) displaceably resting on the slide tube (7) and fitted with a first permanent magnet (24) actuating the switch (8). The float (23) of this invention further includes a second permanent magnet (25) a distance from the permanent magnet (24) associated to the switch (8), this second permanent magnet (25) resting by its own magnetic field on the magnetic field of an oppositely polarized permanent magnet (15) affixed to the slide tube (7). A magnetic coil (17) is affixed to the slide tube (7) which when energized generates a magnetic field reinforcing the effect of the oppositely polarized magnetic field and is of such field intensity that the float (23) is lifted into the switching position without being supported by buoyancy.

Float assembly checking system

An apparatus for checking the workability of a float assembly used to determine the level of liquid in a vessel is disclosed and comprises: a float extension associated with the float of the float assembly and movable when the float assembly is in working order in response to the movement of the float caused by changing the level of liquid in the vessel; a sensor located in spaced relation to the float extension and acting to provide a signal when the float extension is in a predetermined position; and a checking system capable of being activated to move the foat extension into the predetermined position without regard to the level of liquid in the vessel when the float assembly is workable.

TANK MAINTENANCE ACCESS CHAMBER

A fuel storage system has a tank access chamber with improved monitoring, servicing and maintenance capabilities. In particular, the chamber includes a sump monitored by a liquid sensor whose proper function can be automatically checked remotely, e.g., via an electronic controller or remote manual operation. In cases where such a check indicates a need for physical inspection of the sump sensor, the present system provides for sensor removal and installation by service personnel from a location outside the tank access chamber. Thus, the present system facilitates regular inspection and routine or unplanned maintenance without the need for a person to physically enter the tank access chamber. 1. A control assembly for a fuel system including a sump , the control assembly comprising: a sensor having a distal end disposed within the sump , the sensor providing a liquid presence indication responsive to a liquid in the sump being at least at a threshold liquid level;a controller operably connected to the sensor and receiving the liquid presence indication; anda testing device operably connected to the sensor, the testing device comprising a distal actuator having a service configuration and a testing configuration, and a proximal control drivingly connected to the distal actuator,wherein actuation of the proximal control toggles the distal actuator between the service configuration and the testing configuration, andwherein in the testing configuration the distal actuator changes a physical configuration of the sensor to cause the sensor to provide the liquid presence indication when the liquid is below the threshold liquid level.2. The assembly of claim 1 , whereinthe sensor outputs a first signal in an actuated physical configuration indicative of the presence of liquid at the threshold liquid level within the sump, andthe sensor outputs a second signal in a non-actuated physical configuration indicative of the absence of liquid within the sump at the threshold liquid ...

LOW POWER CONSUMPTION TOILET TANK LEAK DETECTION DEVICE

A low power consumption leak detection device for a toilet tank includes a water level switch disposed within the toilet tank having a float. The float moves with a water level within the toilet tank from a starting position to a lower position. An electronic circuit is configured to be electrically disconnected from a power source when the float is in the starting position. The electronic circuit is configured to be electrically connected to the power source when the float is in the lower position and activate a timer having a preset time limit, which if reached sends an alarm signal to an alarm indicator. The alarm indicator notifies a resident of a potential water leak problem that can be fixed. The lower power consumption leak detection device only uses power when the water level drops thereby greatly extending the life of the battery and usefulness of the device.

Ölstand-Detektionsvorrichtung

Aufgabe: Bestimmung eines Ausfalls eines Schwimmerschalters zur Detektion, ob der Ölstand geringer oder gleich einem vorbestimmten Ölstand ist oder nicht. Mittel zur Lösung: Ein vorbestimmter ÖLstand OLth ist zwischen einem normalen Ölstand und einem minimalen Ölstand im Hinblick auf die Tatsache vorgegeben, dass, wenn der Ölstand in einer Ölwanne 14 normal ist, der Ölstand von dem normalen Ölstand zum minimalen Ölstand während einer vorbestimmten Zeitdauer unmittelbar nach dem Starten eines Motors abnimmt. Falls eine Stellung eines Schwimmerscner AN-Stellung während der vorbestimmten Zeitdauer nach dem Starten des Motors ändert, wird bestimmt, dass der Schwimmerschalter 50 einem Fehler unterliegt oder der Ölstand zu hoch ist.

LIQUID LEVEL DETECTING APPARATUS

... 1533655 Liquid level indicators NU-WAY HEATING PLANTS Ltd 14 Jan 1976 [27 Nov 1974] 51279/74 Heading G1H A liquid level detecting apparatus comprises a float chamber 11 having a lower open end 12 and an upper end 13 connected by a pipe 14 to an upper level of a boiler 10, a float 16 in the chamber 11, means such as an electrical switch 18 to provide an indication when the float is at a predetermined position in the chamber, a valve 15 for closing-off the communication between the upper end 13 and the boiler, and means, controlled by a second valve 21, for varying the pressure of the gas above the liquid in the chamber 11 so that the liquid level in the chamber can be varied independently of that in the boiler to test operation of the float and switch. As shown an air pump can be connected at 20 to a conduit 19 and can be used, when the valve 21 is opened, to increase the gas pressure to simulate a low liquid level. In modifications, Fig. 3 and 4 (not shown) the valves 15 and 21 may be combined ...

LIQUID LEVEL INDICATING SYSTEM

... 1343130 Liquid level indicator A C FISH 2 Feb 1972 [2 Feb 1971] 3661/71 Heading G1H [Also in Division H1] In a liquid level indicating system an annular float 10 freely slidable along a tube 12, secured to a tank 10 bottom, open at the top and containing a plurality of reed switches 13, 13a, 14 and 15 actuated by a magnet 11a attached to the float 11 the arrangement is such that when the float 11 reaches the appropriate level one of the switches 13, 13a, 14 or 15 is actuated to illuminate one or other of different colour lights 18, 19, 20 or 21. A press button 22 on manual operation will extinguish light 19 and illuminate light 20 if the appropriate action has been taken. A filling alarm indicator, Fig.3 (not shown), may be provided to warn an operator against overfilling the tank. In an alternative embodiment, Fig.4 (not shown), a flexible tube surrounded by a slidable float and internally provided with reed switches has an anchoring block with a magnet at its lower end for securing to ...

LIQUID LEVEL SENSER

SCR-system och ett förfarande vid ett SCR-system

Functional diagnosis of an electromechanical fill state measuring device

A method for the functional diagnosis of an electromechanical fill state measuring device in which a displacement element on a measuring wire is lowered into a filling material in a container such that in an equilibrium state, the weight of the displacement element minus a displacement element buoyancy, which depends upon at least one equilibrium volume, is determined to be equal to a resulting weight of the displacement element. The resulting weight is specified, and the specified resulting weight is kept constant by correspondingly changing the length of the measuring wire in the equilibrium state. The fill state of the filling material is ascertained using the length of the lowered measuring wire. In order to diagnose a function, the specified value of the equilibrium volume of the displacement element is changed, and the resulting change in the length of the measuring wire is ascertained on the basis of the constant equilibrium state of the resulting weight.

THE SMART ELECTROMECHANICAL VOLUME AND LEVEL METER FOR FLUIDS USING ENCODER SENSOR

Abstract The electromechanical volume and level meter for fluids using encoders consists of four parts: mechanical part, encoder sensor part, control and management part, and smart calibration and error diagnostic part. The mechanical part is mainly a floating part. When the level of fluid in the tank increases or decrease, the floating part (Fig. 1 and Fig. 2) goes up or down and because it is attached and fixed to the chain, it pulls the chain up or down and rotates the chain wheel clockwise or counter clockwise. Hence, the reciprocating motion is converted to rotary motion. Rotary motion of chain wheel, rotates the shaft of the chain wheel (Fig. 5) and this shaft is connected to the encoder sensor part through a coupling part. Hence, the rotary motion of the chain wheel is converted to electronic pulses via encoder sensor and the generated pulses are transmitted to the electronic board (which is the main component of the control and management part) to calculate these rotations. This ...

For calibrating the reading method of filling bit

MONITORING SYSTEM AND METHOD

The present disclosure relates to an abatement apparatus monitoring system. The abatement apparatus monitoring system includes a processor; and at least one load cell for outputting a load cell signal to the processor. The at least one load cell is configured to support a waste tank of an abatement apparatus. The processor is configured to monitor a level of a liquid in the waste tank in dependence on the load cell signal. The present disclosure also relates to an abatement system comprising an abatement apparatus monitoring system; and a method of monitoring operation of an abatement system. 1. An abatement apparatus monitoring system comprising:a processor; andat least one load cell for outputting a load cell signal to the processor, the at least one load cell being configured to support a waste tank of an abatement apparatus;wherein the processor is configured to monitor a level of a liquid in the waste tank in dependence on the load cell signal.2. The abatement apparatus monitoring system as claimed in claim 1 , wherein the processor has a first input for receiving a first signal from a first sensor disposed in the waste tank claim 1 , the processor being configured to calibrate the abatement apparatus monitoring system in dependence on the first signal.3. The abatement apparatus monitoring system as claimed in claim 2 , wherein the first sensor comprises a low liquid level sensor claim 2 , the processor being configured to calibrate a low liquid level in dependence on the first signal.4. The abatement apparatus monitoring system as claimed in claim 1 , wherein the processor has a second input for receiving a second signal from a second level sensor disposed in the waste tank claim 1 , the processor being configured to calibrate the abatement apparatus monitoring system in dependence on the second signal.5. The abatement apparatus monitoring system as claimed in claim 4 , wherein the second sensor comprises a high liquid level sensor claim 4 , the processor ...

METHOD AND SYSTEM TO VALIDATE A FUEL LEVEL INDICATOR IN A VEHICLE

A vehicle is provided with a controller and a fuel system having a fuel tank, a fuel level indicator (FLI), and a pressure sensor. The controller is configured to: pull a vacuum on the tank from an initial pressure to a reference pressure, and provide a diagnostic code in response to comparing a fuel level indicated by the FLI to a rate of pressure change in the tank. A method for performing a fuel level indicator (FLI) diagnostic for a vehicle is provided. A vacuum is pulled on the fuel tank from an initial pressure to a reference pressure. A diagnostic code is provided in response to comparing a fuel level indicated by an FLI to a rate of pressure change.

TESTING METHOD FOR FLOAT LIQUID LEVEL TRANSMITTER

A testing method for float liquid level transmitter first prepares a testing device displaying a basic data screen and receiving basic data corresponding to fields on the basic data screen. The testing device computes the basic data to obtain corresponding standard values and displays the standard values. The testing device fetches displayed valued measured by a float liquid level transmitter and obtains error values by comparing the displayed values with the standard values. The testing device analyzes the error values to provide analyzed data and determines whether the float liquid level transmitter is qualified by reference to an error range. The testing device generates a calibration curve based on the analyzed data and displays the calibration curve. 1. A testing method for float liquid level transmitter , comprising:a) preparing a testing device;b) displaying a basic data screen and receiving basic data corresponding to fields on the basic data screen;c) the testing device computing the basic data to obtaining corresponding standard values and displaying the standard values;d) the testing device fetching displayed valued measured by a float liquid level transmitter of an instrument and obtaining an error range by comparing the displayed values with the standard values, the testing device analyzing the error range to provide analyzed data and determine whether the float liquid level transmitter is qualified by the error range;e) the testing device generating a calibration curve based on the analyzed data and displaying the calibration curve.2. The testing method in claim 1 , wherein the fields of basic data in step b comprise a project name field claim 1 , a determination result field claim 1 , an instrument number field claim 1 , an instrument type field claim 1 , an instrument brand field claim 1 , a tolerance percentage field claim 1 , an input field claim 1 , an output field claim 1 , a first liquid specific gravity field claim 1 , a second liquid specific ...

Friction measurement for electromechanical liquid level gauges

An electromechanical servo gauge includes a displacer on a wire from a drum for causing a torque on the drum, a servo motor coupled by a drive shaft for rotating the drum, wherein a change in a liquid level moves the ESG out of balance, and a force transducer is positioned for measuring the torque on the drum and converting the torque into a physical quantity. The processor implements an automatic friction determination algorithm. A first move moves the displacer in a first direction for ≧1 motor step(s) to a first position and first physical quantity data including a first physical quantity (Q1) is measured by the transducer. Second moving moves the displacer in an opposite direction ≧1 step(s) to reach a second displacer position and second physical quantity data including a second physical quantity (Q2) is measured. A hysteresis measure is determined from the first and second physical quantity.

Method for calibrating a display of a filling level

A method for adaptive calibration of a fuel level indicator of a filling level of a liquid in a tank accompanying operations. A filling level of the liquid is detected with a sensor arrangement. A sensor signal of the arrangement is provided during a movement of the vehicle. In case that the course of the sensor signal is obtained in a respective defined time interval in which the sensor signal is provided several times, a constant value is assumed, an end stop is detected. The respective time intervals at which the end stops were detected and the respective associated constant values are stored. A minimum number of end stop is defined for the tank, and in the case that the minimum number of end stops is reached, a calibration phase is carried out.

AN APPARATUS FOR DETERMINING A VERTICAL LEVEL OR DENSITY PROFILE OF A FLUID COLUMN

An apparatus for determining a vertical level or density profile of a multi-layered fluid column including at least two different liquids, the apparatus comprising: an elongate vertical support member; and a plurality of measurement modules spaced apart, and supported along, the elongate vertical support member to form a vertical array of measurement modules; wherein each measurement module comprises: a support arm mounted to the elongate vertical support member and extending outwardly from the elongate vertical support member; a displacer carried on the support arm; and a force measurement device configured to measure a force attributable to a mass of the displacer mediated by a buoyancy of the displacer in the fluid column, wherein the plurality of measurement modules have a data connection to a data processing unit for transmitting measurement data from the plurality of measurement modules to the data processing unit, and wherein the data processing unit is configured to process the measurement data from the plurality of measurement modules and generate a level or density profile of the fluid column. 1. An apparatus for determining a vertical level or density profile of a fluid column including at least two different liquids or a fluid column including at least one liquid with a varying solid content , the apparatus comprising:a support member; anda plurality of measurement modules spaced apart, and supported along, the support member to form an array of measurement modules;wherein each measurement module comprises:a support arm mounted to the support member and extending outwardly from the support member;a displacer carried on the support arm; anda force measurement device configured to measure a force attributable to a mass of the displacer mediated by a buoyancy of the displacer in the fluid column,wherein the plurality of measurement modules have a data connection to a data processing unit for transmitting measurement data from the plurality of measurement ...

Method for producing remaining fuel detection device and fuel supply module

A fuel remaining amount detector may include an arm supported rotatably to a body an angle sensor configured to output first data in accordance with a relative angle between the body and the arm; a storage circuit configured to store conversion data; and a data conversion circuit configured to convert the first data to second data based on the conversion data. A manufacturing method of the fuel remaining amount detector may include creating the conversion data by performing processing for each of at least three predetermined angles, in which the processing includes: measuring the first data outputted by the angle sensor with the relative angle set to one of the predetermined angles; and storing a value corresponding to the one of the predetermined angles in the storage circuit as a value of the second data in association with the value of the measured first data.

VALIDATION OF FLUID LEVEL SENSORS

Methods and systems for validating a fluid level sensor having a floating element are provided. First readings are acquired from the fluid level sensor indicative of fluid levels sensed via the floating element during a first period of operation of the fluid level sensor. A validated range of fluid levels for the fluid level sensor is determined based on the first readings. At least one second reading is acquired from the fluid level sensor during a second period of operation, subsequent to the first period of operation. A starting position of the floating element for the second period of operation is determined based on the at least one second reading. When the starting position of the floating element is within the validated range, validating the at least one second reading. 1. A method for validating a fluid level sensor having a floating element; comprising:acquiring first readings from the fluid level sensor indicative of fluid levels sensed via the floating element during a first period of operation of the fluid level sensor;determining a validated range of fluid levels for the fluid level sensor based on the first readings; the validated range bounded by an upper bound and a lower bound and being contained within a range of values of the first readings;acquiring at least one second reading from the fluid level sensor during a second period of operation, subsequent to the first period of operation;determining; based on the at least one second reading, a starting position of the floating element for the second period of operation; andwhen the starting position of the floating element is within the validated range, validating the at least one second reading.2. The method of claim 1 , wherein determining the validated range comprises:determining the upper bound of the validated range based on a maximum reading of the first readings;determining the lower bound of the validated range based on a minimum reading of the first readings; andestablishing the validated ...

FAULT DETECTION SYSTEM AND METHOD FOR LIQUID LEVEL SENSING DEVICE

A method and system are described for detecting a fault of a fluid level sensing device associated with an aircraft engine, the fluid level sensing device arranged to measure a variance in a fluid level. The method comprises triggering a timer, while the timer is running, receiving a measurement indicative of the fluid level from the fluid level sensing device, resetting the timer when at least one timer-reset condition has been met, and outputting a fault signal when the timer reaches a timer threshold. 1. A method for detecting a fault of a fluid level sensing device associated with an aircraft engine , the fluid level sensing device arranged to measure a variance in a fluid level , the method comprising:triggering a timer;while the timer is running, receiving a measurement indicative of the fluid level from the fluid level sensing device;resetting the timer when at least one timer-reset condition has been met; andoutputting a fault signal when the timer reaches a timer threshold.2. The method of claim 1 , wherein the at least one timer-reset condition comprises any one of the fluid level reaching a low fluid threshold and the fluid level decreasing by a predetermined amount3. The method of claim 2 , wherein the at least one timer-reset condition comprises receiving a manual request to reset the timer.4. The method of claim 1 , further comprising pausing the timer when the engine is shutdown and resuming the timer when the engine restarts.5. The method of claim 4 , wherein the timer-reset condition comprises detecting an increase in the fluid level between engine shutdown and engine restart.6. The method of claim 1 , wherein the fluid sensing device comprises a plurality of switches.7. The method of claim 6 , wherein the plurality of switches are reed switches and wherein the fluid level sensing device comprises a floating device configured to move vertically with the fluid level to activate and deactivate the reed switches.8. The method of claim 2 , wherein the ...

Fault detection system and method for liquid level sensing device

A method and system are described for detecting a fault of a fluid level sensing device associated with an aircraft engine, the fluid level sensing device arranged to measure a variance in a fluid level. The method comprises triggering a timer, while the timer is running, receiving a measurement indicative of the fluid level from the fluid level sensing device, resetting the timer when at least one timer-reset condition has been met, and outputting a fault signal when the timer reaches a timer threshold.

Dispositivo detector de nivel de aceite.

El dispositivo detector de nivel de aceite tiene por objeto determinar un fallo de un interruptor de flotador para detectar si el nivel de aceite es menor o igual a un nivel predeterminado de aceite. Para ello se sitúa un nivel predeterminado de aceite OLth entre un nivel normal de aceite y un nivel mínimo de aceite en vista del hecho de que cuando el nivel de aceite en una bandeja colectora de aceite 14 es normal, el nivel de aceite disminuye del nivel normal de aceite al nivel mínimo de aceite durante un período predeterminado de tiempo justo después de arrancar un motor. Cuando un interruptor de flotador 50 no se cambia de una posición OFF a una posición ON durante el período predeterminado de tiempo después de arrancar el motor, se determina que el interruptor de flotador 50 experimenta un fallo o el nivel de aceite es excesivo.

Dispositivo detector de nivel de aceite.

Dispositivo detector de nivel de aceite. El dispositivo detector de nivel de aceite tiene por objeto determinar un fallo de un interruptor de flotador para detectar si el nivel de aceite es menor o igual a un nivel predeterminado de aceite. Para ello se sitúa un nivel predeterminado de aceite OLth entre un nivel normal de aceite y un nivel mínimo de aceite en vista del hecho de que cuando el nivel de aceite en una bandeja colectora de aceite 14 es normal, el nivel de aceite disminuye del nivel normal de aceite al nivel mínimo de aceite durante un período predeterminado de tiempo justo después de arrancar un motor. Cuando un interruptor de flotador 50 no se cambia de una posición OFF a una posición ON durante el período predeterminado de tiempo después de arrancar el motor, se determina que el interruptor de flotador 50 experimenta un fallo o el nivel de aceite es excesivo.

Method for radiometric limit level monitoring

A method for limit level monitoring with a radiometric limit switch. A detector measures discrete radiation intensities. Statistical distributions of radiation intensities in a state, free of medium, and in a state, covered by medium, are given by two Poisson distributions. In an interval successive radiation intensities are measured, a distribution of the radiation intensities, two separated Poisson distributions are identified within the distribution, based on the positions of the Poisson distributions identified within the distribution, an upper threshold value is determined for the radiation intensity, the exceeding of which upper threshold value by a radiation intensity measured following the interval means a state change into the state, free of medium, has been detected, and/or a lower threshold value is determined for the radiation intensity, the subceeding of which lower threshold value by a radiation intensity measured following the interval means a state change into the state, covered by medium, has been detected.

Systems and methods for fuel level indicator functional diagnostics

A method for a fuel system comprises receiving a first indication of inconsistency in a fuel level indicator output during a fuel consumption cycle, receiving a second indication of inconsistency in a fuel level indicator output during a refueling event, and indicating electrical degradation of the fuel level indicator responsive to the first and second indications of inconsistency indicating coincident ranges of inconsistency for the fuel level indicator output. By gauging the consistency of a fuel level indicator output during both upward and downward travel, electrical degradation may be distinguished from mechanical degradation. In this way, a range of inconsistency may be determined, and a reported fuel level adjusted while the fuel level indicator output is within the range of inconsistency.