VERBESSERTE GASENTNAHMEKAMMER VOM DIFFUSIONSTYP

System for controlling operating of engine

A GAS DETECTOR

A Gas detector comprises a first source (21) of infra-red radiation which is placed at the focal point of a first off-axis reflector (23). A second source (22) of infra-red radiation is placed at the focal point of a second off-axis parabolic reflector (24). The two collimated beams from the sources are combined by a beam-combining filter (26). The combined beams are split by beam splitter (27) so that part passes to a compensation detector (29) and part is passed through a sample of gases which are being examined. A retro-reflector (32) returns the gas along the same path (31) through the beam splitter (27) and onto a measuring detector (34). A band pass filter (25) is placed in the path of radiation from the first source (21) to allow the transmission of a narrow band of infra-red radiation which exhibits absorbtion by the gas to be detected. The beam-splitting filter (26) allows a waveband of infra-red radiation to pass which exhibits less absorbtion by the gas to be detected. The relative ...

GAS ANALYSIS

IMPROVED GAS SAMPLE CHAMBER OF TYPE OF DIFFUSION

METHOD AND DEVICE FOR DETERMINING THE PH AND THE CELL CONCENTRATION IN A CELL CULTURE MEDIUM

COLLISIONAL BROADENING COMPENSATION USING REAL OR NEAR-REAL TIME VALIDATION IN SPECTROSCOPIC ANALYZERS

Validation verification data quantifying an intensity of light reaching a detector of a spectrometer from a light source of the spectrometer after the light passes through a validation gas across a known path length can be collected or received. The validation gas can include an amount of an analyte compound and an undisturbed background composition that is representative of a sample gas background composition of a sample gas to be analyzed using a spectrometer. The sample gas background composition can include one or more background components. The validation verification data can be compared with stored calibration data for the spectrometer to calculate a concentration adjustment factor, and sample measurement data collected with the spectrometer can be modified using this adjustment factor to compensate for collisional broadening of a spectral peak of the analyte compound by the background components. Related methods, articles of manufacture, systems, and the like are described.

APPARATUS FOR EMITTING AND RECEIVING LIGHT

An apparatus for emitting and receiving light comprises an emitter, which consists of a light source (5) and a concave mirror (7), and a receiver which receives light from the emitter and which is connected to an analysing equipment (3). Furthermore, the receiver comprises a concave mirror (9) which is disposed behind the mirror (7) of the emitter and whose diameter is larger than that of the mirror (7) of the emitter and whose focus is located in front of the light source (5). In the focus of the minor (9) is positioned one end of an optical fibre (19) for transmitting the received light to the analysing equipment (3). Moreover, the apparatus comprises a retro-reflector unit (17) for reflecting the light from the emitter to the receiver, and a movable shielding element (11) which is provided between the light source (5) and the optical fibre (19) and which prevents, in a first position, the light from the light source from reaching the optical fibre directly and lets through, in a second ...

Improved Diffusion-Type Gas Sample Chamber

MINIATURE SPECTROMETER EMBARKS IN A MOTOR VEHICLE HAS DETECTING OF MEASUREMENT AND DETECTOR OF REFERS SINGLE

PROCESS AND DEVICE OF DETERMINATION OF THE PH AND THE CELLULAR CONCENTRATION IN A CULTURE MEDIUM OF CELLS

A polychromatic light source (10) allows to illuminate a layer (14) of cell culture or fermentation, and an optical fiber (22) associated with a lens (18) and with a mirror (20) allows to collect the light transmitted and diffused by the medium. Means (24) for spectral analyses, associated with calculation means (26), allow to determine the pH and the cell concentration of the culture medium (14) which contains a colored indicator of which the tint varies as a function of the pH.

OPTICAL MEASURING APPARATUS AND METHOD FOR THE ANALYSIS OF SAMPLES CONTAINED IN LIQUID DROPS

An optical measuring apparatus (1) is configured for the analysis of samples contained in liquid drops (2) provided by a liquid handling system (3) that comprises at least one liquid handling tip (4). The optical measuring apparatus (1) comprises a light source (8) for irradiating the liquid drop (2); a detector (10) for measuring sample light (11); an optics system (43) with first optical elements (18) for transmit- ting irradiation light (9), and a processor (13) for accepting and processing the measurement signals (12). The liquid drop (2) is suspended at the liquid handling orifice (6) of the liquid handling tip (4) in a position where the liquid drop (2) is penetrated by a first optical axis (14) defined by the light source (8) and the first optical elements (18). The liquid drop (2) is physically touched only by the liquid handling tip (4) of the liquid handling system (3) and the liquid sample (30) inside the liquid handling tip (4). The optical measuring apparatus (1) comprises ...

OPTICAL TRANSMITTANCE APPARATUS FOR FLUIDS

A gas detector

Optical fluid contamination monitor

Apparatus for monitoring fluid contaminant level in a closed circuit hydraulic or lubrication system includes a light source 40 positioned on one side of a fluid sample path 38a for directing light energy into fluid flowing in the sample path, a photosensor 46 positioned on the same side of the sample path, and a reflector 48b positioned on an opposing side of the sample path for receiving light from the source transmitted through the sample fluid and reflecting such light back through the fluid to the photosensor. The photosensor 46 provides an electrical signal as a function of intensity of light incident thereon from the light source 40 after having twice passed through the fluid, and the concentration or level of contaminants in the fluid is indicated as a function of such electrical signal. Thus, the concentration of contaminants that extinguish light energy transmitted through the fluid is indicated as an inverse function of light intensity at the photosensor, and may be compared ...

EXAMINATION OF TRANSPARENT CONTAINERS WITH THE HELP OF A RETROREFLECTOR

FTIR REMOTE SENSOR APPARATUS AND METHOD

GAS ANALYSIS APPARATUS WITH VERY HIGH SENSITIVITY

Procédé et dispositif de détermination du pH et de la concentration cellulaire dans un milieu de culture de cellules

Une source 10 de lumière polychromatique permet d'éclairer une couche 14 d'un milieu de culture de cellules ou de fermentation, tandis qu'une fibre optique 22 associée à une lentille 18 et à un miroir 20 permet de capter la lumière transmise par le milieu et diffusée par celui-ci. Des moyens 24 d'analyse spectrale, associés à des moyens de calcul 26, permettent de déterminer le pH et la concentration cellulaire du milieu de culture 14, qui contient un indicateur coloré dont la teinte varie en fonction du pH.

MONITOR OPACITY AND NITROGEN OXIDES IN THE EXHAUST GAS

Gene analysis device

VERY LOW COST NARROW BAND INFRARED SENSOR

An optical sensor for detecting a chemical in a sample region includes an emitter for producing light, and for directing the light through the sample region. The sensor also includes a detector for receiving the light after the light passes through the sample region, and for producing a signal corresponding to the light the detector receives. The sensor further includes a thermo-optic filter disposed between the emitter and the detector. The optical filter has a tunable passband for selectively filtering the light from the emitter. The passband of the optical filter is tunable by varying a temperature of the optical filter. The sensor also includes a controller for controlling the passband of the optical filter and for receiving the detection signal from the detector. The controller modulates the passband of the optical filter and analyzes the detection signal to determine whether an absorption peak of the chemical is present.

APPARATUS FOR EMITTING AND RECEIVING LIGHT

An apparatus for emitting and receiving light comprises an emitter, which consists of a light source (5) and a concave mirror (7), and a receiver which receives light from the emitter and which is connected to an analysing equipment (3). Furthermore, the receiver comprises a concave mirror (9) which is disposed behind the mirror (7) of the emitter and whose diameter is larger than that of the mirror (7) of the emitter and whose focus is located in front of the light source (5). In the focus of the mirror (9) is positioned one end of an optical fibre (19) for transmitting the received light to the analysing equipment (3). Moreover, the apparatus comprises a retro-reflector unit (17) for reflecting the light from the emitter to the receiver, and a movable shielding element (11) which is provided between the light source (5) and the optical fibre (19) and which prevents, in a first position, the light from the light source from reaching the optical fibre directly, and lets through, in a second ...

FTIR REMOTE SENSOR APPARATUS AND METHOD

An apparatus and method for analyzing one or more gases in a target area. A modulated infrared light source produces an infrared beam that is capable of being absorbed at different wavelengths by the gases being analyzed. An optical arrangement transmits the infrared beam from the light source in a first path across the target area where a reflective element is positioned to return the infrared beam back along the first path to the optical arrangement. Based upon the absorption spectrum of the received beam, a determination can be made of the gases present and the concentrations thereof in the target area.

Gasdetektor.

GERÄT ZUM AUSSENDEN UND EMPFANGEN VON LICHT.

TRANSMISSOMETER

SENSORS

Collisional broadening compensation using real or near-real time validation in spectroscopic analyzers

Validation verification data quantifying an intensity of light reaching a detector of a spectrometer from a light source of the spectrometer after the light passes through a validation gas across a known path length can be collected or received. The validation gas can include an amount of an analyte compound and an undisturbed background composition that is representative of a sample gas background composition of a sample gas to be analyzed using a spectrometer. The sample gas background composition can include one or more background components. The validation verification data can be compared with stored calibration data for the spectrometer to calculate a concentration adjustment factor, and sample measurement data collected with the spectrometer can be modified using this adjustment factor to compensate for collisional broadening of a spectral peak of the analyte compound by the background components. Related methods, articles of manufacture, systems, and the like are described.

COLLISIONAL BROADENING COMPENSATION USING REAL OR NEAR-REAL TIME VALIDATION IN SPECTROSCOPIC ANALYZERS

Validation verification data quantifying an intensity of light reaching a detector of a spectrometer from a light source of the spectrometer after the light passes through a validation gas across a known path length can be collected or received. The validation gas can include an amount of an analyte compound and an undisturbed background composition that is representative of a sample gas background composition of a sample gas to be analyzed using a spectrometer. The sample gas background composition can include one or more background components. The validation verification data can be compared with stored calibration data for the spectrometer to calculate a concentration adjustment factor, and sample measurement data collected with the spectrometer can be modified using this adjustment factor to compensate for collisional broadening of a spectral peak of the analyte compound by the background components. Related methods, articles of manufacture, systems, and the like are described.

Improved gas sample chamber

ANALYSIS CELL AND DERIVATIVES WITH SIGNAL

La présente invention concerne une cuvette d'analyse (1) d'un échantillon biologique, fabriquée en un matériau transparent ou translucide, cuvette constituée d'au moins une paroi verticale (2) et d'un fond (3) cloisonnant la cuvette, dans laquelle une réaction enzymatique fluorescente peut être réalisée. Elle se caractérise par le fait qu'une partie de la cuvette est partiellement recouverte extérieurement d'un manchon (5) dont le revêtement interne (4) en contact avec ladite cuvette (1) est en matériau rétro-réfléchissant. L'invention concerne également une barrette d'analyse contenant au moins une telle cuvette ainsi que l'utilisation d'une telle cuvette ou barrette. Enfin elle propose un dispositif d'analyse pour ces cuvette ou barrette d'analyse. L'invention trouve une application préférentielle dans le domaine du diagnostic in vitro. The present invention relates to a cuvette (1) for analyzing a biological sample, made of a transparent or translucent material, a cuvette consisting of at least one vertical wall (2) and a bottom (3) separating the cuvette, wherein a fluorescent enzymatic reaction can be carried out. It is characterized in that a portion of the bowl is partially externally covered with a sleeve (5) whose inner liner (4) in contact with said bowl (1) is of retro-reflective material. The invention also relates to an analysis bar containing at least one such bowl and the use of such a bowl or bar. Finally, it proposes an analysis device for these cuvette or analysis bar. The invention finds preferential application in the field of in vitro diagnostics.

PROBE FOR MONITORING A FLUID MEDIUM

A probe (60) for monitoring a fluid medium employing at least one fiber optic emitting a wave into the fluid medium. The fluid medium scatters or causes luminescence of the emitted wave which is then collected by at least one fiber optic (16). The probe includes a base (2) having a hole and a window (1) covering the hole of the base, wherein the window transmits electromagnetic waves. The probe collects scattered and luminescence of waves through one or more fiber optics placed behind the window and transmits the wave to a spectrometer connected to a computer which can analyze the fluid medium on a real-time on-line basis. Piezoresistive and temperature sensing elements are deposited on the window which can also serve as a force collector diaphragm. The elements are located primarily on the periphery of the diaphragm leaving a part of the diaphragm open for transmission and collection of the waves.

Apparatus for emitting and receiving light

PCT No. PCT/SE90/00334 Sec. 371 Date Nov. 19, 1991 Sec. 102(e) Date Nov. 19, 1991 PCT Filed May 18, 1990 PCT Pub. No. WO90/14581 PCT Pub. Date Nov. 29, 1990.An apparatus for emitting and receiving light comprises an emitter, which consists of a light source (5) and a concave mirror (7), and a receiver which receives light from the emitter and which is connected to analyzing equipment (3). Furthermore, the receiver comprises a concave mirror (9) which is disposed behind the mirror (7) of the emitter and whose diameter is larger than that of the mirror (7) of the emitter and whose focus is located in front of the light source (5). In the focus of the mirror (9) is positioned one end of an optical fibre (19) for transmitting the received light to the analyzing equipment (3). Moreover, the apparatus comprises a retroreflector unit (17) for reflecting the light from the emitter to the receiver, and a movable shielding element (11) which is provided between the light source (5) and the optical ...

System for controlling operating of engine

A system for controlling an engine, eg a gas-fuelled engine, having a charge supply pipe 104, 106 leading to a cylinder 108-112, comprises a light emitter 202, eg a laser, and an analyser coupled to the charge supply line. The analyser receives a light beam 206 from the emitter 202, eg via a reflector 208, and determines the difference between an attribute parameter, eg frequency, wavelength or intensity, of the emitted and received light beams due to absorption of light by the air/fuel mixture. A control module assesses whether the determined difference is greater than a threshold value and, if so, controls ignition of charge in a cylinder, actuation of gas exchange valve(s) or pressure of charge being supplied to the engine. The charge may be an air/fuel mixture; alternatively, the charge may be air, fuel being added via gas admission valve(s) 222. Multiple detection modules (302, fig.3), each comprising an emitter (304), an analyzer (308) and, optionally, a mirror (306), may be provided ...

SENSORS

IMPROVED GAS WITHDRAWAL CHAMBER OF TYPE OF DIFFUSION

Collisional broadening compensation using real or near-real time validation in spectroscopic analyzers

Validation verification data quantifying an intensity of light reaching a detector of a spectrometer from a light source of the spectrometer after the light passes through a validation gas across a known path length can be collected or received. The validation gas can include an amount of an analyte compound and an undisturbed background composition that is representative of a sample gas background composition of a sample gas to be analyzed using a spectrometer. The sample gas background composition can include one or more background components. The validation verification data can be compared with stored calibration data for the spectrometer to calculate a concentration adjustment factor, and sample measurement data collected with the spectrometer can be modified using this adjustment factor to compensate for collisional broadening of a spectral peak of the analyte compound by the background components. Related methods, articles of manufacture, systems, and the like are described.

TRANSMISSOMETER

EPOXY MOLDED GAS CELL FOR OPTICAL MEASUREMENT AND METHOD OF FORMING

The present invention relates to a gas cell (1) for optical measurements of gas content and/or concentration comprising a cavity (1a), at least one aperture (11) for gas exchange, at least one first socket (12) for light emitting means (2) and at least one second socket (13) for light detecting means (3). The length of an optical measuring path (A) through the cavity (1a) is defined by a direct or indirect distance between a light emitting means (2) in the first socket (12) and a light detecting means (3) in the second socket (13). The present invention teaches that an epoxy mold compound is used to form at least the parts of the gas cell (1) that define the optical measuring path (A).

APPARATUS FOR DETECTING DETERIORATION OF ENGINE OIL

An apparatus for detecting the deterioration of an engine oil including a ceramic heater radiating infrared light including infrared radiation having a wavelength of 6.1 micron meters which is equal to the specific infrared absorption peak of ester of nitric acid contained in the engine oil. The infrared light is made incident upon a photodetector via a band pass filter having a center wavelength of 6.1 micron meters to detect an amount of the ester of nitric acid contained in the engine oil. It has been experimentally confirmed that an amount of the ester of nitric acid is proportional t the total acid value which is a measure of the deterioration of the engine oil, so that by suitably processing an output signal of the photodetector, it is possible to detect the deterioration of the engine oil. The thus detected deterioration may be displayed on a display device provided on a front panel of a car.

A disposable measurement tip and method for use thereof

MINIATURE SPECTROMETER ONBOARD AN AUTOMOBILE WITH A MEASUREMENT DETECTOR AND A SINGLE REFERENCE DETECTOR

The invention relates to a device for measuring a spectrum of a light beam, in a previously selected range of wavelengths, said spectrum being generated by a sample to be analysed, said optical measurement device including at least one light source (12), a measurement cell (9) and a measurement detector (17) placed on an optical measurement path, said optical measurement path being travelled by an optical measurement beam emitted by the light source (12) and hitting the measurement cell (9), a self-calibration means suitable for taking into account the possible deflection of the light sources due to environmental or operating conditions, regardless of the presence or absence of a sample to be analysed in the measurement cell, said self-calibration means including a means (15) for creating an optical reference path travelled by an optical reference beam, emitted by the light source and not hitting the measurement cell, and a reference detector (18). Said measurement device is remarkable ...

METHODS FOR GAS LEAK DETECTION AND LOCALIZATION IN POPULATED AREAS USING MULTI-POINT ANALYSIS

Improved gas leak detection from moving platforms is provided. Automatic horizontal spatial scale analysis can be performed in order to distinguish a leak from background levels of the measured gas. Source identification can be provided by using isotopic ratios and/or chemical tracers to distinguish gas leaks from other sources of the measured gas. Multi-point measurements combined with spatial analysis of the multi point measurement results can provide leak source distance estimates. These methods can be practiced individually or in any combination.

Diffusion-type gas sample chamber

The improved sample chamber includes an elongated hollow tube closed at one end and having specularly-reflective inwardly facing surfaces. A source of radiation and a detector of radiation are mounted side by side in the open end of the hollow tube, both facing the closed end. A plurality of filtering apertures are formed in the tube, and each aperture is covered by a sheet of a semipermeable membrane that serves to prevent airborne particles larger than a predetermined size from entering the chamber while not interfering with the free diffusion of the gas to be measured into and out of the chamber. The use of an elongated hollow tube that is closed at one end results in no loss in the efficiency with which the radiation is conducted from the source to the detector while decreasing the external length of the chamber by 50 percent.

Optical fiber probe for monitoring fluid medium

A probe for monitoring a fluid medium employing at least one fiber optic emitting a wave into the fluid medium. The fluid medium scatters or causes luminescence of the emitted wave which is then collected by at least one fiber optic. The probe includes a base having a hole and a window covering the hole of the base, wherein the window transmits electromagnetic waves. The probe collects scattered and luminescence of waves through one or more fiber optics placed behind the window and transmits the waves to a spectrometer connected to a computer which can analyze the fluid medium on a real-time on-line basis. Piezoresistive and temperature sensing elements are deposited on the window which can also serve as a force collector diaphragm. The elements are located primarily on the periphery of the diaphragm leaving a part of the diaphragm open for transmission and collection of the waves.

DEVICE FOR DETERMINING THE COMPOSITION OF FLUIDS, IN PARTICULAR THE CONSTITUENTS OF EXHAUST GASES OF INTERNAL COMBUSTION ENGINES

Il est proposé un dispositif pour mesurer la composition de fluides, en particulier des constituants de gaz d'échappement de moteurs à combustion interne, où le gaz d'échappement à mesurer est traversé par un rayon lumineux (32, 31) sur une distance de mesure (29) et où le gaz d'échappement est plus ou moins affaibli ou modifié suivant la teneur en constituants. Le signal lumineux récepteur est avantageusement capté par un récepteur de lumière de la distance de mesure (18), lequel est étanche à la source de lumière (14) émettant la lumière, et le signal est analysé dans un circuit d'évaluation (26) relativement à l'émission de lumière initiale. De cette façon on obtient d'une manière simple un renseignement précis sur la turbidité du gaz d'échappement ou sur la proportion de charge d'un fluide ou d'un gaz avec des constituants optiquement actifs. A device is proposed for measuring the composition of fluids, in particular of constituents of exhaust gas from internal combustion engines, where the exhaust gas to be measured is crossed by a light ray (32, 31) over a distance of measurement (29) and where the exhaust gas is more or less weakened or modified according to the content of constituents. The receiving light signal is advantageously picked up by a measuring distance light receiver (18), which is sealed against the light source (14) emitting the light, and the signal is analyzed in an evaluation circuit (26). relative to the initial light emission. In this way, precise information is obtained in a simple manner on the turbidity of the exhaust gas or on the charge proportion of a fluid or a gas with optically active constituents.

APPARATUS FOR EMITTING AND RECEIVING LIGHT

ANALYSIS CUVETTE AND DERIVATIVES WITH SIGNAL AMPLIFICATION

La présente invention concerne une cuvette d'analyse (1) d'un échantillon biologique, fabriquée en un matériau transparent ou translucide, cuvette constituée d'au moins une paroi verticale (2) et d'un fond (3) cloisonnant la cuvette, dans laquelle une réaction enzymatique fluorescente peut être réalisée. Elle se caractérise par le fait qu'une partie de la cuvette est partiellement recouverte extérieurement d'un manchon (5) dont le revêtement interne (4) en contact avec ladite cuvette (1) est en matériau rétro-réfléchissant. L'invention concerne également une barrette d'analyse contenant au moins une telle cuvette ainsi que l'utilisation d'une telle cuvette ou barrette. Enfin elle propose un dispositif d'analyse pour ces cuvette ou barrette d'analyse. L'invention trouve une application préférentielle dans le domaine du diagnostic in vitro.

IMPROVED DIFFUSION-TYPE GAS SAMPLE CHAMBER

The improved sample chamber includes an elongated hollow tube (12) closed at one end (14) and having specularly-reflective inwardly facing surfaces(16). A source (26) of radiation and a detector (28) of radiation are mounted side by side in the open end of the hollow tube, both facing the closed end. A plurality of filtering apertures (20) are formed in the tube (12), and each aperture is covered by a sheet (22) of a semipermeable membrane that serves to prevent airborne particles larger than a predetermined size from entering the chamber while not interfering with the free diffusion of the gas to be measured into andout of the chamber. The use of an elongated hollow tube that is closed at one end results in no loss in the efficiency with which the radiation is conducted from the source to the detector while decreasing the external length of the chamber by 50 percent.

OPTICAL TRANSMITTANCE APPARATUS FOR FLUIDS OPTICAL TRANSMITTANCE APPARATUS FOR FLUIDS

ABSTRACT OF THE DISCLOSURE An optical transmittance apparatus has a pair of reference channels of glass rods and a pair of sample channels containing sample fluid. A beam splitter and mirror pass a first portion of an incident beam through an ingoing reference channel, and a second portion through an ingoing sample channel. The first portion is reflected back through an outgoing reference channel, and the second portion back through an outgoing sample channel. The beam splitter and mirror directs the outgoing beams into a common outlet path. A partial disk selectively passes either portion. For positioning the disk, poles of a magnet mounted on the disk axle face windings made about an axis perpendicular to the axle, the windings being on the opposite side of a barrier plate from the poles. Current of one polarity through the windings effects one orientation of the disk, and reversed olarity reorients it perpendicularly.

APPARATUS FOR DETECTING DETERIORATION OF ENGINE OIL

An apparatus for detecting the deterioration of an engine oil including a ceramic heater radiating infrared light including infrared radiation having a wavelength of 6.1 micron meters which is equal to the specific infrared absorption peak of ester of nitric acid contained in the engine oil. The infrared light is made incident upon a photodetector via a band pass filter having a center wavelength of 6.1 micron meters to detect an amount of the ester of nitric acid contained in the engine oil. It has been experimentally confirmed that an amount of the ester of nitric acid is proportional t the total acid value which is a measure of the deterioration of the engine oil, so that by suitably processing an output signal of the photo-detector, it is possible to detect the deterioration of the engine oil. The thus detected deterioration may be displayed on a display device provided on a front panel of a car.

[...] FOR THE DETECTION OF LOW LEVELS OF POLLUTANTS IN EXHAUST GAS

APPARATUS AND METHOD FOR DETECTING PHASE CHANGES IN A FLUID USING SPECTRAL RECOGNITION

Systems and methods are described, and one method includes passing an optical beam through a volume of the gas to a reception surface, applying spectroanalysis to the optical beam received at the reception surface, and determining from the spectroanalysis whether a liquid is carried by the volume of the gas.

Self-referencing remote optical probe

A probe for remote spectrometric measurements of fluid samples having a hollow probe body with a sliding reflective plug therein and a lens at one end, ports for admitting and expelling the fluid sample and a means for moving the reflector so that reference measurement can be made with the reflector in a first position near the lens and a sample measurement can be made with the reflector away from the lens and the fluid sample between the reflector and the lens. Comparison of the two measurements will yield the composition of the fluid sample. The probe is preferably used for remote measurements and light is carried to and from the probe via fiber optic cables.

COLLISIONAL BROADENING COMPENSATION USING REAL OR NEAR-REAL TIME VALIDATION IN SPECTROSCOPIC ANALYZERS

Monitoring of fluid contamination level

GAS ANALYSIS APPARATUS

The apparatus comprises a radiation source and radiation sensor means together with gas sampling means 10 through which the radiation passes lengthwise, and focusing reflection means 32, 34, 36 being provided to cause multiple passes of said radiation through the sampling means. Both the radiation source and sensor means are at the same end 16 of the apparatus, and the whole is adapted to be mounted directly on a gas stack through an anti-vibration mounting. Porous panels exclude particles in the gas from the apparatus. ...

INFRA-RED ABSORPTION GAS DETECTOR

EPOXY MOLDED GAS CELL FOR OPTICAL MEASUREMENT AND METHOD OF FORMING

The present invention relates to a gas cell (1) for optical measurements of gas content and/or concentration comprising a cavity (1a), at least one aperture (11) for gas exchange, at least one first socket (12) for light emitting means (2) and at least one second socket (13) for light detecting means (3). The length of an optical measuring path (A) through the cavity (1a) is defined by a direct or indirect distance between a light emitting means (2) in the first socket (12) and a light detecting means (3) in the second socket (13). The present invention teaches that an epoxy mold compound is used to form at least the parts of the gas cell (1) that define the optical measuring path (A).

INSPECTION OF TRANSPARENT CONTAINERS WITH OPPOSING REFLECTION MEANS

Apparatus for detecting commercial variations in transparent containers such as glass bottles that includes a conveyor for directing containers along a path through an inspection station, and a light source disposed on one side of the path for directing light energy through a container at the inspection station. A light sensing camera is positioned on the same side of the conveyor path, and a retroreflector is positioned on the opposing side of the conveyor path opposite the light source and camera for reflecting light energy transmitted from the source through a container at the station back through the container onto the camera. Commercial variations are detected as a function of variations in intensity of light energy received at the camera.

Miniature spectrometer onboard an automobile with a measurement detector and a single reference detector

本发明涉及一种用于在先前选择的波长范围中测量光束的光谱的装置，所述光谱由待分析的样品生成，所述光学测量装置包括：至少一个光源（12）；测量室（9）；以及测量检测器（17），其被放置在光学测量路径上，所述光学测量路径由光源（12）发射的光学测量束所行进并且遇到测量室（9）；自校准构件，适合于与待分析样品存在或不存在与测量室中无关地考虑到由于环境或操作条件引起的可能偏转，所述自校准构件包括：用于产生光学参考路径的构件（15），所述光学参考路径由光源发射的光学参考束所行进并且不遇到测量室；以及参考检测器（18）。所述测量装置显著之处在于其被设计成机载安装在汽车上并且包括用于选择性地混合光学测量束和光学参考束的构件（30、31），所述测量检测器（17）还充当参考检测器（18）。

MINIATURE SPECTROMETER EMBARKS IN A MOTOR VEHICLE HAS DETECTING OF MEASUREMENT AND DETECTOR OF REFERS SINGLE

Dispositif de mesure d'un spectre d'un faisceau lumineux, dans une plage de longueurs d'ondes préalablement choisie, ledit spectre étant généré par un échantillon à analyser, ledit dispositif de mesure optique comprenant au moins une source lumineuse (12), une cellule de mesure (9) et un détecteur de mesure (17) placés sur un chemin optique de mesure, ledit chemin optique de mesure étant parcouru par un faisceau optique de mesure issu de la source lumineuse (12) et rencontrant la cellule de mesure (9), des moyens d'auto calibration permettant de tenir compte de la dérive éventuelle des sources lumineuses du fait des conditions d'environnement ou d'utilisation, indépendamment de la présence ou de l'absence d'un échantillon à analyser dans la cellule de mesure, lesdits moyens d'auto calibration comprenant des moyens (15) de créer un chemin optique de référence parcouru par un faisceau optique de référence, issu de la source lumineuse et ne rencontrant pas la cellule de mesure, et un détecteur de référence (18). Ledit dispositif de mesure est remarquable en ce qu'il est conçu pour être embarqué dans un véhicule automobile et comporte des moyens (30, 31) de mélanger sélectivement le faisceau optique de mesure et le faisceau optique de référence, le détecteur de mesure (17) faisant également office de détecteur de référence (18).

GAS ANALYSIS APPARATUS WITH VERY HIGH SENSITIVITY

Le dispositif (10) de mesure photo-acoustique de la quantité d'au moins un gaz comporte : - une cuve résonnante de type Helmholtz constituée d'au moins deux tubes (14) fermés à leurs extrémités et reliés entre eux, à proximité de chacune de leurs extrémités, par des tubes capillaires (18) de diamètre inférieur au diamètre des tubes, - un moyen (16) d'introduction de gaz, - au moins une source (13) d'énergie radiante laser qui fournit une énergie d'excitation au gaz contenu dans la cuve, à une longueur d'onde d'émission correspondant à une longueur d'onde d'absorption maximum localement pour un dit gaz, en regard d'une fenêtre (19) fermant une extrémité de tube, - au moins un miroir (15) positionné sur une paroi d'un tube recevant de l'énergie radiante, pour réfléchir l'énergie radiante à l'intérieur du tube, - un moyen (20) de modulation qui module l'énergie d'excitation fournie par chacune des sources d'énergie laser et - au moins un transducteur acousto-électrique (11) disposé sur l'un des tubes. The device (10) for photoacoustic measurement of the quantity of at least one gas comprises: - a Helmholtz type resonator tank consisting of at least two tubes (14) closed at their ends and connected together, close to each of their ends, by capillary tubes (18) of diameter smaller than the diameter of the tubes, - a means (16) for introducing gas, - at least one source (13) of radiant laser energy which provides a dynamic energy of gas excitation contained in the tank, at an emission wavelength corresponding to a maximum absorption wavelength locally for a said gas, facing a window (19) closing a tube end, - at least one mirror (15) positioned on a wall of a tube receiving radiant energy, for reflecting the radiant energy inside the tube, - a means (20) of modulation which modulates the energy of the excitation provided by each of the laser energy sources and - at least one acoustic transducer o- ...

IMPROVED DIFFUSION-TYPE GAS SAMPLE CHAMBER

The improved sample chamber includes an elongated hollow tube (12) closed at one end (14) and having specularly-reflective inwardly facing surfaces (16). A source (26) of radiation and a detector (28) of radiation are mounted side by side in the open end of the hollow tube, both facing the closed end. A plurality of filtering apertures (20) are formed in the tube (12), and each aperture is covered by a sheet (22) of a semipermeable membrane that serves to prevent airborne particles larger than a predetermined size from entering the chamber while not interfering with the free diffusion of the gas to be measured into and out of the chamber. The use of an elongated hollow tube that is closed at one end results in no loss in the efficiency with which the radiation is conducted from the source to the detector while decreasing the external length of the chamber by 50 percent.

Modular flow-through cell

A modular flow-through cell is described which has main block member having a first pathway which leads from an inlet port to a large bore and a second passageway which leads from the large bore to an outlet port. A cartridge assembly is removably inserted into the large bore to provide an optical path for light to pass through a fluid sample.

Spektrometer

Sensor for sensing the light absorption of a gas

A sensor for sensing the light absorption of a gas, the sensor comprising a light source 2 and a light detector 4 both of which are optically coupled to an optical fibre 20 along which light is to be transmitted and received. The optical fibre is optically coupled by means of a collimating lens 8 to an optical path extending through a region 12 of the gas, the optical path extending between the collimating lens and a retroreflector 10. A plurality of the sensors may be optically coupled to a common optical fibre to enable sensing of a plurality of regions using, e.g. time-division multiplexing. The sensor may sense the concentration of methane. ...

A disposable measurement tip and method for use thereof

OPACIMETRE FOR THE DETECTION OF LOW LEVELS OF POLLUTANTS IN EXHAUST GAS

L'invention a pour objet un dispositif de mesure de l'opacité des gaz d'échappement d'un véhicule à moteur, permettant de déterminer des teneurs faibles comme élevées de polluants présents dans ces gaz, avec une précision accrue. Il comprend une enceinte à paroi tubulaire de longueur Le déterminée, fermée à ses extrémités, présentant un conduit d'entrée et au moins un conduit de sortie pour la circulation dudit gaz dans l'enceinte, des moyens d'émission d'un faisceau lumineux traversant l'enceinte dans sa longueur, des moyens de réception dudit faisceau lumineux ayant traversé l'enceinte, et des moyens de transformation de celui-ci en un signal électrique proportionnel à l'intensité lumineuse reçue pour donner une mesure de l'opacité du gaz présent dans l'enceinte, des moyens d'émission et de réception du faisceau lumineux étant disposés à une première extrémité de l'enceinte, et des moyens de réflexion placés perpendiculairement audit faisceau étant disposés à une seconde extrémité de l'enceinte de sorte que le faisceau lumineux traverse deux fois l'enceinte selon une même trajectoire, dans un sens direct et dans un sens retour, avant d'atteindre lesdits moyens de réception. The invention relates to a device for measuring the opacity of the exhaust gas of a motor vehicle, for determining low levels as high pollutants present in these gases, with increased accuracy. It comprises an enclosure with a tubular wall of length The determined, closed at its ends, having an inlet duct and at least one outlet duct for the circulation of said gas in the enclosure, means for emitting a light beam passing through the enclosure in its length, means for receiving said light beam having passed through the enclosure, and means for transforming it into an electrical signal proportional to the light intensity received to give a measure of the opacity of the gas present in the chamber, means for transmitting and ...

OPACITY CONTROL DEVICE AND NITROGEN OXIDES IN EXHAUST GASES

L'invention a pour objet un dispositif de mesure qui permet de réaliser simultanément des mesures combinées dans les gaz d'échappement de la teneur en oxydes d'azote (ou NOx) et de leur opacité laquelle est représentative de la teneur en particules. Il comprend une enceinte à paroi tubulaire de longueur Le déterminée, fermée à ses extrémités, présentant un conduit d'entrée et au moins un conduit de sortie pour la circulation dudit gaz dans l'enceinte, et : a) des moyens d'émission d'un faisceau lumineux traversant l'enceinte dans sa longueur, des moyens de réception dudit faisceau lumineux ayant traversé l'enceinte, et des moyens de transformation de celui-ci en un premier signal électrique proportionnel à l'intensité lumineuse reçue, pour donner une mesure de l'opacité du gaz présent dans l'enceinte, b) des moyens de détection des oxydes d'azote, montés dans une cavité de la paroi de l'enceinte hors du trajet dudit faisceau lumineux, délivrant un second signal électrique proportionnel ...

Automotive-vehicle-borne miniature spectrometer having a single measurement and reference detector

A device for measuring a spectrum of a light beam, in a wavelength range chosen beforehand, the spectrum being generated by a sample to be analyzed, the optical measuring device including at least one light source, a measurement cell and a measurement detector placed on a measurement optical pathway, the measurement optical pathway being taken by a measurement optical beam emitted by the light source, and encountering the measurement cell, a self-calibration unit allowing any drift of the light sources, due to environmental conditions or conditions of use, to be taken into account independently of whether a sample to be analyzed is present in or absent from the measurement cell, the self-calibration unit including elements for creating a reference optical pathway, taken by a reference optical beam emitted by the light source, and not encountering the measurement cell, and a reference detector.

Cutting Tool With Porous Regions

A cutting tool with a cutting region and a connecting support region where the support region is designed to connect to an external motor assembly. The cutting tool is also has a porous region that is integrated within a portion of the tool such that as the tool cuts material the porous region can allow samples of the cut material to permeate into an internal chamber of the tool. Once in the internal chamber material samples can be analyzed in-situ for direct composition analysis.

Very low cost narrow band infrared sensor

An optical sensor for detecting a chemical in a sample region includes an emitter for producing light, and for directing the light through the sample region. The sensor also includes a detector for receiving the light after the light passes through the sample region, and for producing a signal corresponding to the light the detector receives. The sensor further includes a thermo-optic filter disposed between the emitter and the detector. The optical filter has a tunable passband for selectively filtering the light from the emitter. The passband of the optical filter is tunable by varying a temperature of the optical filter. The sensor also includes a controller for controlling the passband of the optical filter and for receiving the detection signal from the detector. The controller modulates the passband of the optical filter and analyzes the detection signal to determine whether an absorption peak of the chemical is present.

Messkopf mit Beleuchtung

Eine Vorrichtung (1) für die lichtspektroskopische Analyse einer kleinen Menge einer flüssigen Probe, umfasst eine Aufnahmestelle (3) zum Aufbringen kleinen Menge der flüssigen Probe, und Lichtleiter (5, 6), die Licht einer Lichtquelle zur Probe und Signallicht aus der Probe in Richtung eines Detektors leiten, und ist dadurch gekennzeichnet, dass unterhalb der Aufnahmestelle (3) eine Beleuchtungsquelle (7) vorgesehen ist und unter der Aufnahmestelle (3) ein Bereich (8) vorgesehen ist, der für das Licht der Beleuchtungsquelle (7) durchlässig ist, so dass das Beleuchtungslicht die Aufnahmestelle (3) ausleuchtet.

Spektrometer

Improved diffusion-type gas sample chamber

Improved diffusion-type gas sample chamber

FTIR REMOTE SENSOR APPARATUS AND METHOD

An apparatus and method for analyzing one or more gases in a target area. A modulated infrared light source produces an infrared beam that is capable of being absorbed at different wavelengths by the gases being analyzed. An optical arrangement transmits the infrared beam from the light source in a first path across the target area where a reflective element is positioned to return the infrared beam back along the first path to the optical arrangement. Based upon the absorption spectrum of the received beam, a determination can be made of the gases present and the concentrations thereof in the target area.

LASER-TYPE GAS ANALYZING APPARATUS

ANORDNING FOER UTSAENDNING OCH MOTTAGNING AV LJUS

Prüfung durchsichtiger Behälter mit Hilfe eines Retroreflektors

Vorrichtung zur Bestimmung des optischen Lichtdurchlassgrades von Flüssigkeiten

Vorrichtung zur Analyse von Messgasen, insbesondere Atemluft

Vorrichtung (10) für die Analyse eines Messgases, vorzugsweise von Atemluft, insbesondere zur isotopengetrennten Detektion von Gasen in Luft, aufweisend: eine Messzelle (100) mit einem Einlass (300) und einem Auslass (160) für das zu analysierende Messgas; eine Laser-Detektor-Anordnung (220), mit wenigstens einer Laserlichtquelle (450) zur Erzeugung von Laserlicht und mit wenigstens einem Detektor zum Detektieren des Laserlichts, wobei die Laser-Detektor-Anordnung (220) derart ausgebildet ist, dass die Messzelle (100) sich in einem Strahlengang des Laserlichts (L4) zwischen Laserlichtquelle (450) und Detektor (440, 460) befindet; eine Auswerteeinheit, die dazu ausgebildet ist, ein Detektorsignal des Detektors (440, 460) zwecks Analyse des Messgases auszuwerten; dadurch gekennzeichnet, dass ein optomechanischer Block (210) der Vorrichtung (10), welcher optomechanische Block (210) zumindest die Messzelle (100), den Einlass (300), den Auslass (160) und die dazwischen befindlichen Komponenten ...

Monitoring of fluid contamination level

DEVICE FOR MEASURING PHYSICAL QUANTITIES BY TRANSMITTING AND RECEIVING ELECTROMAGNETIC RADIATION

INSPECTION OF TRANSPARENT CONTAINERS WITH OPPOSING REFLECTION MEANS

Apparatus for detecting commercial variations in transparent containers such as glass bottles that includes a conveyor for directing containers along a path through an inspection station, and a light source disposed on one side of the path for directing light energy through a container at the inspection station. A light sensing camera is positioned on the same side of the conveyor path, and a retroreflector is positioned on the opposing side of the conveyor path opposite the light source and camera for reflecting light energy transmitted from the source through a container at the station back through the container onto the camera. Commercial variations are detected as a function of variations in intensity of light energy received at the camera.

DEVICE FOR THE MEASUREMENT OF THE PARTICLE LOAD IN THE GAS OF COMBUSTION OR DISCHARGE OF A COMBUSTION PROCESS

Optical oxygen sensor

An oxygen sensor contains an indicator whose change in absorption is a function of the concentration of oxygen in a sample bathing the indicator. Light transmitted and reflected through the indicator of the sensor undergoes an absorption that is characteristic of the concentration of oxygen. The indicator is a viologen whose absorption returns to a steady-state value after it has been subjected to a pulse of short-wavelength light. The rate at which the absorption returns to the steady-state value is a function of the concentration of oxygen bathing the viologen indicator. A measurement system for use with the pO2 sensor causes a short-wavelength flash to be sent to the sensor and thereafter monitors the time-varying absorption of the sensor to measure the oxygen content of the sample bathing the viologen indicator.

In-situ gas-measuring system for gas reactors with critical environments

An in-situ gas-measuring system (1) includes an IR photon source (10) and an IR photon detector (11). The in-situ gas-measuring system (1) has an expansion chamber (12), at which an optical element (16, 16′, 16″) is arranged. A connection element (13) provides a detachable fluid-communicating connection of the expansion chamber (12) to a gas reaction chamber (2). The IR-photon source (10), the optical element (16, 16′, 16″) and the IR photon detector (11) define an optical measuring path, which extends through the expansion chamber (12). The installation and maintenance of the in-situ gas-measuring system (1) are reduced by the features of the in-situ gas-measuring system (1).

Gaskonzentrationsmessgerät

Es wird ein Gaskonzentrationsmessgerät zur Bestimmung einer Konzentration einer Gaskomponente in einem Messgas mit einem Gehäuse, einem im Gehäuse angeordneten Lichtsender zur Emission eines einfallenden Sendelichtstrahls, einer Sendeoptik zum Leiten des einfallenden Sendelichtstrahls durch ein zu messendes Gas, einem Reflektor zur Reflexion des durch das zu messende Gas geleiteten einfallenden Sendelichtstrahls als reflektieren Sendelichtstrahl zurück durch das zu messende Gas auf einen Lichtempfänger und einer Auswerteeinrichtung zur Auswertung von Lichtempfangssignalen des Lichtempfängers angegeben, wobei der Reflektor aus wenigstens einem für den einfallenden Sendelichtstrahl transparenten Material besteht und eine dem Lichtsender zugewandte Vorderfläche und eine dem Lichtsender abgewandte Rückfläche aufweist, wobei die Rückfläche des Reflektors eine Beschichtung zur Reflexion des einfallenden Sendelichtstrahls aufweist.

Verfahren zur Bestimmung des Wasserstoffanteils in einer Wasserstoff/Erdgasmischung

Die Erfindung betrifft ein Verfahren und einen Sensor zur Bestimmung des Wasserstoffanteils in einer Wasserstoff/Erdgasmischung (102).Dabei ist zunächst eine Bestimmung des Anteils von zumindest einem Erdgasbestandteil mittels zumindest einer IR-Absorptionsmessung (V3) vorgesehen. Nachfolgend wird der Wasserstoffanteil aus dem mindestens einen bestimmten Anteil berechnet (V4).

TRANSMISSOMETER

A transmissometer for measuring atmospheric visibility in fog is provided. A transmissometer comprises a lamp (10), a collimating lens system (12), a beam splitter (14), an exit window (44) and a retro-reflector (47). A light beam is reflected back to the beam splitter prism (52) where it is turned to 90 DEG to a photodiode (48). The level of light measured by the photodiode is determined by the atmospheric transmission. A comparative beam is deflected by the beam splitting prism (52) to a reflective mirror (54) and back to the photodiode (48). A rotating shutter (16) allows the light to be cut off in a particular cycle in order that the atmospheric transmission can be compared with the reference beam reflected by mirror (54). The rotating shutter is constructed with various openings to allow measurements of noise of the instrument to be detected in order that an accurate reading can be provided by the instrument.

TRANSMISSOMETER

GAS DETECTOR

PROCESS AND DEVICE OF DETERMINATION OF THE PH AND THE CELLULAR CONCENTRATION IN A CULTURE MEDIUM OF CELLS

ANALYSIS CELL AND DERIVATIVES WITH SIGNAL

EPOXY MOLDED GAS CELL FOR OPTICAL MEASUREMENT AND METHOD OF FORMING

The present invention relates to a gas cell (1) for optical measurements of gas content and/or concentration comprising a cavity (1a), at least one aperture (11) for gas exchange, at least one first socket (12) for light emitting means (2) and at least one second socket (13) for light detecting means (3). The length of an optical measuring path (A) through the cavity (1a) is defined by a direct or indirect distance between a light emitting means (2) in the first socket (12) and a light detecting means (3) in the second socket (13). The present invention teaches that an epoxy mold compound is used to form at least the parts of the gas cell (1) that define the optical measuring path (A).

PROBE FOR MONITORING A FLUID MEDIUM

A probe (60) for monitoring a fluid medium employing at least one electromagnetic wave reflector (8) and at least one fiber optic (4 and 5) for analysis of the fluid medium. The probe includes a base (2) having a hole (68), a window (1) covering the hole of the base, wherein the window transmits electromagnetic waves and an electromagnetic reflector, spaced apart from the window, disposed to reflect at least part of the electromagnetic waves toward the window. The probe collects the reflected waves through one or more fiber optics placed behind a window to a fluid medium and transmits the waves to a spectrometer connected to a computer which analyzes the fluid medium on a real time on-line basis. Piezoresistive and temperature sensing elements are deposited on the window which also may function as a force collector diaphragm of thin refractory or a semiconductor materials. The piezoresistive elements are on the unsupported part of the diaphragm and at least part of the diaphragm is transparent ...

Optical fiber probe for monitoring fluid medium

A probe for monitoring a fluid medium employing at least one fiber optic emitting a wave into the fluid medium. The fluid medium scatters or causes luminescence of the emitted wave which is then collected by at least one fiber optic. The probe includes a base having a hole and a window covering the hole of the base, wherein the window transmits electromagnetic waves. The probe collects scattered and luminescence of waves through one or more fiber optics placed behind the window and transmits the waves to a spectrometer connected to a computer which can analyze the fluid medium on a real-time on-line basis. Piezoresistive and temperature sensing elements are deposited on the window which can also serve as a force collector diaphragm. The elements are located primarily on the periphery of the diaphragm leaving a part of the diaphragm open for transmission and collection of the waves.

Methods for gas leak detection and localization in populated areas using multi-point analysis

Improved gas leak detection from moving platforms is provided. Automatic horizontal spatial scale analysis can be performed in order to distinguish a leak from background levels of the measured gas. Source identification can be provided by using isotopic ratios and/or chemical tracers to distinguish gas leaks from other sources of the measured gas. Multi-point measurements combined with spatial analysis of the multi-point measurement results can provide leak source distance estimates. These methods can be practiced individually or in any combination.

Gas measurement system

A gas measurement system as disclosed can include a coherent light source, which emits a light beam; a detector; a beam path formed between the light source) and the detector; and a gas cell arranged in the beam path such that the detector receives light transmitted through the gas cell. The gas cell can include a porous ceramic and have an optical path length which is a multiple of the actual layer thickness of the gas cell. A optical element can be arranged in the beam path between the light source and the gas cell with the light beam emitted by the light being widened and unfocussed as the light beam enters the gas cell.

Flow Cell Modules and Liquid Sample Analyzers and Methods Including Same

A liquid sample analyzer includes a liquid sample source, a flow cell, an optical device and a plurality of optical fibers. The flow cell is configured to receive a flow of a liquid sample from the liquid sample source. The plurality of optical fibers optically connect the flow cell to the optical device to transmit light between the flow cell and the optical device.

Methods for gas leak detection and localization in populated areas having a distance estimate

Improved gas leak detection from moving platforms is provided. Automatic horizontal spatial scale analysis can be performed in order to distinguish a leak from background levels of the measured gas. Source identification can be provided by using isotopic ratios and/or chemical tracers to distinguish gas leaks from other sources of the measured gas. Multi-point measurements combined with spatial analysis of the multi-point measurement results can provide leak source distance estimates. These methods can be practiced individually or in any combination. 1. A method of gas leak detection and localization , the method comprising:performing one or more primary gas concentration measurements from a moving platform that proceeds along at least one platform track disposed in proximity to one or more potential gas leak locations, wherein the primary gas concentration measurements are measurements of local gas concentration at the moving platform;performing an automatic spatial scale analysis of the primary gas concentration measurements;automatically determining whether or not a gas leak is present at the potential gas leak locations based on the primary gas concentration measurements and the automatic spatial scale analysis;wherein the automatic spatial scale analysis includes providing an estimated distance between a platform measurement position and a leak source, based on the automatic spatial scale analysis of the primary gas concentration measurements along some or all of the at least one platform track; andproviding a leak indication at the potential gas leak locations to an end user and providing the estimated distance to the end user.2. The method of claim 1 , wherein the automatic spatial scale analysis of the primary gas concentration measurements comprises determining an estimated horizontal width of a gas plume from the primary gas concentration measurements.3. The method of claim 2 , wherein the estimated distance is determined in part by the estimated ...

FIBER ASSEMBLY FOR RESPIRATORY GAS DETECTION

A fiber assembly () for capnography or oxygraphy employing an housing (), a collimator (), a retroreflector () and a single mode optical fiber (). Housing () including a respiratory gas detection chamber (). Collimator () is rigidly disposed within or detachably attached to housing (), and retroreflector () is rigidly disposed within or detachably attached to housing (). Collimator () and retroreflector () are optically aligned within housing () across respiratory gas detection chamber (). Optical fiber () is optically aligned with collimator () within or external to the housing (). In operation, optical fiber () emits a gas sensing light beam through collimator () across respiratory gas detection chamber () to retroreflector (), and optical fiber () receives a gas detection light beam reflected from retroreflector () across respiratory gas detection chamber () through collimator () to optical fiber (). The gas detection light beam is indicative of the degree of carbon dioxide or oxygen within any gas flowing through respiratory gas detection chamber (). 1. A fiber assembly for respiratory gas detection , the fiber assembly comprising:a housing including a respiratory gas detection chamber;a collimator rigidly disposed within or detachably attached to the housing;a retroreflector rigidly disposed within or detachably attached to the housing and optically aligned within the housing across the respiratory gas detection chamber with the collimator; and 'wherein the gas detection light beam is indicative of the degree of carbon dioxide or oxygen within any gas flowing through the respiratory gas detection chamber.', 'a single mode optical fiber optically aligned with the collimator within or external to the housing to emit a gas sensing light beam through the collimator across the respiratory gas detection chamber to the retroreflector and to receive a gas detection light beam reflected from the retroreflector across the respiratory gas detection chamber through the ...

Density measurement device

The concentration measurement device 100 includes an electric unit 20 having a light source 22 and a photodetector 24 , a fluid unit 10 having a measurement cell 1 , a first light-transmission member 11 for transmitting light from the light source to the measurement cell, a second light transmission member 12 for transmitting light from the measurement cell to the photodetector, a lens 3 A provided in the fluid unit, the lens 3 A being arranged such that light from the first light transmission member is to be incident on the first position and light is to be emitted from the second position to the second light transmission member, a pressure sensor 5 for measuring pressure of fluid flowing through the measurement cell, and an arithmetic circuit 28 for detecting concentration of the fluid flowing through the measurement cell, the arithmetic circuit being configured to calculate the fluid concentration based on the output of the photodetector and a correction factor related to the pressure output by the pressure sensor and the concentration of fluid in order to reduce the measurement error due to the refractive index of the fluid.

Apparatus and method for performing a light-absorption measurement of a specified amount of sample subject to pressure force

An apparatus and a method are disclosed for performing a light-absorption measurement of a specified amount of sample. A method for performing a light-absorption measurement of a specified amount of sample includes placing the sample on the surface of an apparatus including the surface and a light reflector, the light reflector being mechanically coupled with the surface and separated from the surface by a separation distance, changing the separation distance, while the light reflector remains mechanically coupled with the surface, to a first separation distance, and performing a first light-absorption measurement of the sample via the apparatus, while the separation distance is equal to the first separation distance, and while the sample is subject to pressure force.

Methods for gas leak detection and localization in populated areas using isotope ratiol measurements

Improved gas leak detection from moving platforms is provided. Automatic horizontal spatial scale analysis can be performed in order to distinguish a leak from background levels of the measured gas. Source identification can be provided by using isotopic ratios and/or chemical tracers to distinguish gas leaks from other sources of the measured gas. Multi-point measurements combined with spatial analysis of the multi-point measurement results can provide leak source distance estimates. These methods can be practiced individually or in any combination.

Methods for gas leak detection and localization in populated areas using two or more tracer measurements

Improved gas leak detection from moving platforms is provided. Automatic horizontal spatial scale analysis can be performed in order to distinguish a leak from background levels of the measured gas. Source identification can be provided by using two or more tracer measurements of isotopic ratios and/or chemical tracers to distinguish gas leaks from other sources of the measured gas. Multi-point measurements combined with spatial analysis of the multi-point measurement results can provide leak source distance estimates. Qualitative source identification is provided. These methods can be practiced individually or in any combination.

Flow channel structure and measuring device for measurement target liquid

A flow channel structure includes a substrate including a supply flow channel that guides a measurement target liquid toward inside; a separation element accommodating unit that accommodates a separation element that separates components included in the measurement target liquid; and a detection unit that guides the measurement target liquid passing through the separation element accommodating unit, wherein measuring light for measuring information about the components is to be irradiated onto the measurement target liquid. The detection unit includes a measurement flow channel part that guides the measurement target liquid, an incident part that is provided at an end of the measurement flow channel part and that guides the measuring light toward inside the measurement flow channel part, and an emission part that is provided at the other end of the measurement flow channel part and that derives the measuring light from the measurement flow channel part.

Epoxy molded gas cell for optical measurement and method of forming

The present invention relates to a gas cell ( 1 ) for optical measurements of gas content and/or concentration comprising a cavity ( 1 a ), at least one aperture ( 11 ) for gas exchange, at least one first socket ( 12 ) for light emitting means ( 2 ) and at least one second socket ( 13 ) for light detecting means ( 3 ). The length of an optical measuring path (A) through the cavity ( 1 a ) is defined by a direct or indirect distance between a light emitting means ( 2 ) in the first socket ( 12 ) and a light detecting means ( 3 ) in the second an epoxy mold compound is used to form at least the parts of the gas cell ( 1 ) that define the optical measuring path (A).

ANALYSIS CUVETTE AND DERIVATIVES WITH SIGNAL AMPLIFICATION

A cuvette in which a fluorescent enzymatic reaction can be carried out that is for analyzing a sample includes at least one vertical wall and a bottom. The cuvette is made of a transparent or translucent material and a portion of the cuvette is partially covered on the outside with a sleeve including an inner coating made of retro-reflective material that is in contact with the cuvette. 1. A cuvette in which a fluorescent enzymatic reaction can be carried out that is for analyzing a sample , the cuvette comprising at least one vertical wall and a bottom , wherein the cuvette is made of a transparent or translucent material and a portion of the cuvette is partially covered on the outside with a sleeve including an inner coating made of retro-reflective material that is in contact with the cuvette.2. The cuvette as claimed in claim 1 , wherein the interior shape of the sleeve partially matches the exterior shape of the cuvette claim 1 , with the exception of at least one zone configured to allow illumination at an excitation wavelength and detection of an emission wavelength from outside of the cuvette.3. The cuvette as claimed in claim 1 , wherein the retro-reflective material is either prism-based or bead-based.4. The cuvette as claimed in claim 1 , wherein the sleeve is attached to the cuvette by adhesive-bonding without deterioration of the optical qualities of the interior face of the sleeve.5. The cuvette as claimed in claim 4 , wherein the adhesive is transparent or translucent and does not absorb UV rays.6. The cuvette as claimed in claim 1 , wherein the sleeve is attached to the cuvette by mechanical clip-fastening.7. The cuvette as claimed in claim 1 , wherein the inner coating made of retro-reflective material is not secured to the cuvette claim 1 , but is sandwiched between the cuvette and the sleeve claim 1 , forming clips.8. The cuvette as claimed in claim 1 , wherein the sleeve is totally or partially present at the level of lateral partition(s) of the ...

浓度测定方法

本发明提供一种浓度测定方法，其在浓度测定装置中执行，所述浓度测定装置具有：供被测定流体流动的测定单元；发出向测定单元的入射光的光源；检测来自测定单元的出射光的光检测器；基于光检测器的输出计算被测定流体的吸光度以及浓度的运算部；以及测定被测定流体的温度的温度传感器，所述浓度测定方法包括：使分子结构随温度而变化的气体作为被测定流体而在测定单元内流动的工序；使由被测定流体吸收的波长的光从光源向测定单元入射，并且通过光检测器测定从测定单元出射的光的强度的工序；以及基于由温度传感器测定的温度和光检测器的输出，计算被测定流体的浓度的工序。

Method for determination of the hydroxyl number in liquids having an acid number greater than the hydroxyl number

The present invention describes a method for determination of the hydroxyl number in liquids characterized by acid number value greater than the hydroxyl number using Fourier Transform Near-Infrared spectroscopy and transflective technology.

Low-power-consumption miniature infrared gas sensor and implementation method thereof

本发明公开了红外气体传感技术领域中的一种低功耗微型红外气体传感器及其实现方法，该传感器包括光学气室和电路板，光学气室中气室上盖上设有进气通道，气室底座上设有光源和探测器，光源和探测器均与电路板连接，反射壁的截面呈椭圆形，光源和探测器分别与该椭圆的两个焦点位置对应；该方法包括填充气体、发出中红外光并反射，探测器探测光信号并输出电信号，双通道进行差分计算得到待测气体浓度。本发明通过设计椭圆弧形反射镜结构，在保证较大光程的前提下，使光信号经过单次反射即可达到光探测器，有效解决因为光源发散和多次反射而导致光损耗增大的问题，提高光信号的利用率，从而降低光源的功耗，实现低功耗红外气体传感器。

Ftir remote sensor apparatus and method

An apparatus (16) and method for analyzing one or more gases in a target area (10). A modulated infrared light source (40) provides an infrared beam (20) that is capable of being absorbed at different wavelengths by the gases being analyzed. An optical arrangement (30) transmits the infrared beam (20) from the light source (40) in a first path (22) across the target area (10) where a reflective element (26) is positioned to return the infrared beam back along the first path to the optical arrangement (30). Based upon the absorption spectrum of the received beam (28), a determination can be made of the gases present and the concentrations thereof in the target area (10).

Diffusion-type gas sample chamber

The improved sample chamber includes an elongated hollow tube closed at one end and having specularly-reflective inwardly facing surfaces. A source of radiation and a detector of radiation are mounted side by side in the open end of the hollow tube, both facing the closed end. A plurality of filtering apertures are formed in the tube, and each aperture is covered by a sheet of a semipermeable membrane that serves to prevent airborne particles larger than a predetermined size from entering the chamber while not interfering with the free diffusion of the gas to be measured into and out of the chamber. The use of an elongated hollow tube that is closed at one end results in no loss in the efficiency with which the radiation is conducted from the source to the detector while decreasing the external length of the chamber by 50 percent.

High-stability small infrared gas sensor and manufacturing and implementation method thereof

本发明公开了传感器技术领域中的一种高稳定的小型红外气体传感器，其包括传感器基座及螺旋型气室，传感器基座上设有红外光源和双通道探测器，红外光源发出的红外光经由螺旋型气室的反射后射入双通道探测器处；该制作工艺包括前期准备、固定两个反光角、形成螺旋型气室、固定红外光源和双通道探测器等过程，其实现过程中，双通道探测器的两个探测通道分别探测被待测气体吸收后的红外光信号和没有被待测气体吸收过的红外光信号，并各自转换为电信号后输出，然后做差分运算得到待测气体的浓度。本发明克服了现有红外传感器小型化制备难度大的问题，能充分实现内部结构的小型化设计，有效提高光能利用率。

Spectroscopic sample holder

Some embodiments of the present invention provide a sample holder that is suitable for collection and spectroscopic measurement of a blood sample. In some embodiments, the sample holder is provided with an optical chamber that is specifically designed to spread blood into a thin film, thereby reducing the average attenuation of electromagnetic radiation (EMR) due to scattering of EMR by the red blood cells in a blood sample, without having to hemolyze the red blood cells using sound waves or reagents. The inlet of some embodiments of the sample holder is a piece of capillary tube, and in other embodiments, the inlet is configured to engage a syringe. In some embodiments, the inlet of the sample holder can accommodate adaptors with different configurations, thereby allowing the sample holder to receive blood from any source, for example a pin prick or a syringe.

Probe for monitoring a fluid medium

A probe (60) for monitoring a fluid medium employing at least one fiber optic emitting a wave into the fluid medium. The fluid medium scatters or causes luminescence of the emitted wave which is then collected by at least one fiber optic (16). The probe includes a base (2) having a hole and a window (1) covering the hole of the base, wherein the window transmits electromagnetic waves. The probe collects scattered and luminescence of waves through one or more fiber optics placed behind the window and transmits the wave to a spectrometer connected to a computer which can analyze the fluid medium on a real-time on-line basis. Piezoresistive and temperature sensing elements are deposited on the window which can also serve as a force collector diaphragm. The elements are located primarily on the periphery of the diaphragm leaving a part of the diaphragm open for transmission and collection of the waves.

Probe for monitoring a fluid medium

A probe for monitoring a fluid medium employing at least one electromagnetic wave reflector and at least one fiber optic for analysis of the fluid medium. The probe includes a base having a hole, a window covering the hole of the base, wherein the window transmits electromagnetic waves and a electromagnetic reflector, spaced apart from the window, disposed to reflect at least part of the electromagnetic waves toward the window. The probe collects the reflected waves through one or more fiber optics placed behind a window to a fluid medium and transmits the waves to a spectrometer connected to a computer which analyzes the fluid medium on a real time on-line basis. Piezoresistive and temperature sensing elements are deposited on the window which also may function as a force collector diaphragm of thin refractory or a semiconductor materials. The piezoresistive elements are on the unsupported part of the diaphragm and at least part of the diaphragm is transparent to electromagnetic waves.

Probe for monitoring a fluid medium

A probe for monitoring a fluid medium employing at least one fiber optic emitting a wave into the fluid medium. The fluid medium scatters or causes luminescence of the emitted wave which is then collected by at least one fiber optic. The probe includes a base having a hole and a window covering the hole of the base, wherein the window transmits electromagnetic waves. The probe collects scattered and luminescence of waves through one or more fiber optics placed behind the window and transmits the waves to a spectrometer connected to a computer which can analyze the fluid medium on a real-time on-line basis. Piezoresistive and temperature sensing elements are deposited on the window which can also serve as a force collector diaphragm. The elements are located primarily on the periphery of the diaphragm leaving a part of the diaphragm open for transmission and collection of the waves.

Probe for monitoring a fluid medium

A probe (60) for monitoring a fluid medium employing at least one electromagnetic wave reflector (8) and at least one fiber optic (4 and 5) for analysis of the fluid medium. The probe includes a base (2) having a hole (68), a window (1) covering the hole of the base, wherein the window transmits electromagnetic waves and an electromagnetic reflector, spaced apart from the window, disposed to reflect at least part of the electromagnetic waves toward the window. The probe collects the reflected waves through one or more fiber optics placed behind a window to a fluid medium and transmits the waves to a spectrometer connected to a computer which analyzes the fluid medium on a real time on-line basis. Piezoresistive and temperature sensing elements are deposited on the window which also may function as a force collector diaphragm of thin refractory or a semiconductor materials. The piezoresistive elements are on the unsupported part of the diaphragm and at least part of the diaphragm is transparent to electromagnetic waves.

Enzyme-linked immunosorbent assay (ELISA) instrument

本发明涉及一种酶标仪，能够实现小型化，能够在短时间内高精度地进行微孔板的各孔中收容的样本全部的光测定。酶标仪(10)具备：投光受光部，至少具有微孔板(20)的孔(21)的数量的、由与微孔板(20)的一个孔对应的投光部和受光部构成的组；以及导光部，具有：反射部件，使从投光受光部侧通过了孔(21)所收容的样本(30)的光，向投光受光部侧反射；投光用导光路(13a)，将从投光部发出的光向样本(30)导光；受光用导光路(13b)，将由反射部件反射并通过了样本(30)的光向受光部导光；以及包围部件(13c)，分别通过含有颜料树脂来包围投光用导光路(13a)以及受光用导光路(13b)。

Laser type gas analyzer

【課題】従来のレーザ分析計は、煙道の側壁に２箇所の開口を設ける必要があった。既設の煙道に、レーザ分析計を後付けで設置する場合に、煙道の側壁に対して大掛かりな取り付け加工が必要であった。【解決手段】レーザ式ガス分析装置は、煙道の側壁の外部から、側壁に設けられた開口部を通過させて、開口部に対向する側壁の内面へレーザ光を照射する照射部と、内面で反射したレーザ光を受光する受光部と、照射部が出力するレーザ光の強度と受光部が受光するレーザ光の強度に基づいて煙道を通過する対象ガスの濃度を演算する演算部とを備える。【選択図】図１

Vehicular exhaust many pollutions component real-time telemetry method and apparatus

本发明是车辆尾气多污染组份实时遥测方法和装置，属于环境科学和光谱学领域，车辆尾气占城市污染源的80％，而通常的监测方法为双怠速排放法或简易工况法，无法进行实时现场多组份监测。本装置采用了红外调谐二极管激光光谱和紫外差分吸收光谱的联合使用，并使用了红外调谐二极管激光器的差分吸收，窄脉宽扫描和二次谐波检测。紫外差分吸收法采用全息光栅分光光谱仪和列阵探测器等光谱技术，实现了多光谱实时监测CO、CO 2 、HO、HC和烟尘多种污染物的检测，具有PPM级高灵敏度、高分辨率和动态效应检测。

Automobile exhaust remote sensing detection system based on quantum cascade laser device

本实用新型公开了一种基于量子级联激光器的汽车尾气遥感检测系统。本实用新型中任意函数发生器产生的信号输入激光器电流脉冲驱动模块，量子级联激光器在激光器电流脉冲驱动模块的驱动下产生中红外或远红外的激光，中红外至远红外经过汽车尾气排放区域后通过斩波器得到调制信号，热释电传感器模块探测经过调制的中红外或远红外的激光信号，同时热释电传感器将探测得到的信号输入锁相放大器运算，锁相放大器的输出数据到计算机，计算机通过数据处理分析方法将汽车尾气中不同排放产物的含量计算出来。

Cutting tool with porous regions

A cutting tool with a cutting region and a connecting support region where the support region is designed to connect to an external motor assembly. The cutting tool is also has a porous region that is integrated within a portion of the tool such that as the tool cuts material the porous region can allow samples of the cut material to permeate into an internal chamber of the tool. Once in the internal chamber material samples can be analyzed in-situ for direct composition analysis.

Flow channel structure and measuring device for measurement target liquid

A flow channel structure includes a substrate including a supply flow channel that guides a measurement target liquid toward inside; a separation element accommodating unit that accommodates a separation element that separates components included in the measurement target liquid; and a detection unit that guides the measurement target liquid passing through the separation element accommodating unit, wherein measuring light for measuring information about the components is to be irradiated onto the measurement target liquid. The detection unit includes a measurement flow channel part that guides the measurement target liquid, an incident part that is provided at an end of the measurement flow channel part and that guides the measuring light toward inside the measurement flow channel part, and an emission part that is provided at the other end of the measurement flow channel part and that derives the measuring light from the measurement flow channel part.

Optical measuring apparatus and method for the analysis of samples contained in liquid drops

Optical measuring apparatus for analysis of samples contained in liquid drops includes a liquid handling system with at least one liquid handling tip. The apparatus has a light source for irradiating the drop, a detector for measuring sample light, an optics system with first optical elements for transmitting irradiation light, and a processor for processing measurement signals. The drop is suspended at the liquid handling orifice of the tip in a position where the drop is penetrated by a first optical axis defined by the light source and the first optical elements. The drop is physically touched only by the liquid handling tip and the liquid sample inside the tip. The tip is attached to a robot arm which adjusts the position of the liquid drop with respect to at least one optical element of the optics system.

Patent DE3624567C2

Concentration measuring device

濃度測定裝置(100)具備：電氣單元(20)，其具有光源(22)及光檢出器(24)；流體單元(10)，其具有測定胞(1)；第1光傳送構件(11)，其用於將來自光源的光傳送到測定胞；第2光傳送構件(12)，其用於將來自測定胞的光傳送到光檢出器；透鏡(3A)，其被設於流體單元，並且配置成將來自第1光傳送構件的光入射到第1位置，從第2位置將光出射到第2光傳送構件；壓力感測器(5)，其測定流經測定胞的流體之壓力；及演算電路(28)，其檢出流經測定胞的流體之濃度，為了降低流體的折射率所致的測定誤差，基於光檢出器的輸出、及與壓力感測器輸出的壓力及流體之濃度建立關聯的校正因子而演算流體的濃度。

Spectroanalytical gas measuring apparatus

Ein spektralanalytisches Gasmeßgerät weist eine Strahlungsquelle (36), einen Sendekondensor (19), ein Objektiv (13) und einen Strahlenteiler (11) auf, welcher zumindest einen Teil der von einem Reflektor (40) in sich zurückgeworfenen Strahlung zu einem Polychromator (32) lenkt. Die Sendestrahlung fällt hinter dem Strahlenteiler (11) auf einen zwischen zwei Stellungen verstellbaren Umlenkspiegel (12), welcher das Licht einem Objektivreflektor (13) zuführt. Der Objektivreflektor (13) reflektiert die Strahlung zu einem gegenüber der Strahlungsdurchtrittsöffnung (14) angeordneten Nachführspiegel (15). Es ist wenigstens ein lang- und ein kurzbrennweitiger Objektivreflektor (13) vorgesehen, um in Zusammenwirkung mit dem verstellbaren Umlenkspiegel (12) unterschiedliche Reichweitenbereiche zu gewährleisten. A spectral analytical gas measuring device has a radiation source (36), a transmission condenser (19), an objective (13) and a beam splitter (11) which at least some of the radiation reflected by a reflector (40) into a polychromator (32) directs. The transmitted radiation falls behind the beam splitter (11) onto a deflection mirror (12) which can be adjusted between two positions and which feeds the light to a lens reflector (13). The objective reflector (13) reflects the radiation to a tracking mirror (15) arranged opposite the radiation passage opening (14). At least one long and one short focal length objective reflector (13) is provided in order to ensure different range ranges in cooperation with the adjustable deflecting mirror (12).

Apparatus for detecting deterioration of engine oil

An apparatus for detecting the deterioration of an engine oil including a ceramic heater radiating infrared light including infrared radiation having a wavelength of 6.1 micron meters which is equal to the specific infrared absorption peak of ester of nitric acid contained in the engine oil. The infrared light is made incident upon a photodetector via a band pass filter having a center wavelength of 6.1 micron meters to detect an amount of the ester of nitric acid contained in the engine oil. It has been experimentally confirmed that an amount of the ester of nitric acid is proportional to the total acid value which is a measure of the deterioration of the engine oil, so that by suitably processing an output signal of the photodetector, it is possible to detect the deterioration of the engine oil. The thus detected deterioration may be displayed on a display device provided on a front pedal of a car.

Monitoring the contamination level of liquids

Microplate reader

小型化が可能であり、マイクロプレートの各ウェルに収容された試料全ての光測定を短時間で高精度に行うことができるマイクロプレートリーダーが開示される。マイクロプレートリーダー（１０）は、マイクロプレート（２０）の１つのウェルに対応した投光部と受光部とからなる組を、少なくともマイクロプレート（２０）のウェル（２１）の数だけ有する投光受光部と、投光受光部側からウェル（２１）に収容された試料（３０）を通過した光を、投光受光部側へ反射させる反射部材と、投光部から放出される光を試料（３０）へ導光する投光用導光路（１３ａ）と、反射部材によって反射され試料（３０）を通過した光を受光部へ導光する受光用導光路（１３ｂ）と、投光用導光路（１３ａ）および受光用導光路（１３ｂ）を、それぞれ顔料含有樹脂により包囲する包囲部材（１３ｃ）と、を有する導光部と、を備える。 Disclosed is a microplate reader that can be miniaturized and that can perform optical measurement of all samples contained in each well of the microplate with high accuracy in a short time. The microplate reader (10) has light projection / reception having at least the number of the wells (21) of the microplate (20) that includes a light projecting portion and a light receiving portion corresponding to one well of the microplate (20). A reflection member that reflects the light that has passed through the sample (30) accommodated in the well (21) from the light projecting / receiving unit side to the light projecting / receiving unit side, and the light emitted from the light projecting unit (sample ( 30), a light guide for light projection (13a), a light guide for light reception (13b) that guides the light reflected by the reflecting member and passed through the sample (30) to the light receiver, and a light guide for light projection (13a) and a light guide for receiving light (13b), each having a surrounding member (13c) surrounding the pigment-containing resin.

Improved diffusion-type gas sample chamber

Fluorescence detector structure

Excitation light of a selected wavelength from an excitation monochromator is directed along the long axis of a flow cell containing the sample to be analyzed, generating fluorescence. An emission monochromator is positioned at right angles to the plane of the excitation monochromator and receives the fluorescence from the flow cell utilizing optical components positioned such that the entrance slit of the emission monochromator is aligned with the long axis of the emission window. The intensity of the output from the flow cell is further maximized by positioning a retro-reflecting mirror at the end of the flow channel to effectively double the path-length of the excitation beam, and a reflecting surface on the side of the cell opposite the emission window to increase the collection efficiency and thereby increase the sensitivity of the detector.

Apparatus and method for performing a light-absorption measurement of a specified amount of sample subject to pressure force

An apparatus and a method are disclosed for performing a light- absorption measurement of a specified amount of sample (S). A method for performing a light-absorption measurement of a specified amount of sample (S) includes placing the sample (S) on the surface (102) of an apparatus including the surface (102) and a light reflector (104), the light reflector (104) being mechanically coupled with the surface (102) and separated from the surface (102) by a separation distance, changing the separation distance, while the light reflector (104) remains mechanically coupled with the surface (102), to a first separation distance (D1), and performing a first light- absorption measurement of the sample (S) via the apparatus, while the separation distance is equal to the first separation distance (D1) while the sample is subject to pressure force, changing the separation distance, while the light reflector (104) remains mechanically coupled with the surface (102), to a second separation distance (D2), and performing a second light-absorption measurement of the sample (S) via the apparatus, while the separation distance is equal to the second separation distance (D2), and while the sample is subject to pressure force.

Gas detection system, gas detection method and program

Provided is a gas detection system that separates a decrease in the amount of received light caused by condensation and a change in absorbance caused by the influence of humidity in a monitoring area. The gas detection system includes a humidity measuring device, a transmitting device, and a receiving device. The humidity measuring device measures the humidity in the vicinity of the transmitting device and the receiving device. The transmitting device is provided with a light source that transmits optical signals of a plurality of wavelengths. The receiving device is provided with a light detecting unit for receiving the optical signals from the transmitting device, and a discrimination unit for determining, on the basis of the humidity measured by the humidity measuring device and the light intensity of the optical signals received in the light detecting unit, the presence or absence of condensation in at least one region among the regions through which the optical signals pass.

Cell counting and cell size measuring system with a fluid focusing channel

본 발명은 유체포커싱채널부를 구비하는 세포 계수 및 세포 크기 측정시스템에 관한 것으로서, 유체에 함유된 세포를 일 방향으로 집속되게 유도함으로써 세포의 계수 및 세포의 크기를 정밀하게 측정할 수 있는 유체포커싱채널부를 구비하는 세포 계수 및 세포 크기 측정시스템에 관한 것이다. 본 발명은 측정대상 세포가 함유된 샘플이 일 방향으로 유동할 수 있게 형성되고, 상기 세포에 광이 조사될 수 있게 형성된 유체포커싱채널부와; 상기 유체포커싱채널부에 광을 제공하기 위한 광원부와; 상기 광원부에서 광출되어 상기 유체포커싱채널부를 경유하는 광을 수신하기 위한 수광부와; 상기 광원부에서 방출되는 광이 상기 유체포커싱채널부를 경유하도록 안내 및 상기 유체포커싱채널부를 경유한 광을 상기 수광부로 안내하는 광학계와; 상기 수광부에 수신된 광을 신호처리하는 신호처리부와; 상기 신호처리부에 의해 처리된 광신호를 이용하여 세포의 수를 카운트 및 세포의 크기를 측정 및 분석하는 분석부;를 구비한다. The present invention relates to a cell counting and cell-size measuring system having a fluid focusing channel unit, and more particularly, to a fluid-focusing channel measuring method and apparatus for measuring a cell count and a cell size accurately by inducing cells contained in a fluid to be concentrated in one direction, And a system for measuring cell size and cell size. The present invention relates to a fluorescence microscope comprising a fluid focusing channel part formed so that a sample containing a measurement target cell can flow in one direction and is formed such that light can be irradiated to the cell; A light source unit for providing light to the fluid focusing channel unit; A light receiving unit for receiving the light emitted from the light source unit and passing through the fluid focusing channel unit; An optical system for guiding the light emitted from the light source unit to pass through the fluid focusing channel unit and guiding the light passed through the fluid focusing channel unit to the light receiving unit; A signal processing unit for signal processing the light received by the light receiving unit; And an analyzer for counting the number of cells and measuring and analyzing the size of the cells using the optical signal processed by the signal processor.

Emitter / receiver

Device and method for carrying out light absorption measurements on a specific quantity of sample subjected to a pressure

公开了用于对特定量的样品(S)实施光吸收测量的装置和方法。用于对特定量的样品(S)实施光吸收测量的方法包括：将样品(S)置于包括表面(102)和光反射器(104)的装置的表面(102)上，光反射器(104)与表面(102)机械耦接且与表面(102)以一分开距离分开；在光反射器(104)与表面(102)保持机械耦接的情况下，将分开距离改变成第一分开距离(D1)；在分开距离等于第一分开距离(D1)且样品经受压力的情况下，通过装置对样品(S)实施第一光吸收测量；在光反射器(104)与表面(102)保持机械耦接的情况下，将分开距离改变成第二分开距离(D2)；和在分开距离等于第二分开距离(D2)且样品经受压力的情况下，通过装置对样品(S)实施第二光吸收测量。

Miniature spectrometer onboard an automobile with a measurement detector and a single reference detector

本发明涉及一种用于在先前选择的波长范围中测量光束的光谱的装置，所述光谱由待分析的样品生成，所述光学测量装置包括：至少一个光源（12）；测量室（9）；以及测量检测器（17），其被放置在光学测量路径上，所述光学测量路径由光源（12）发射的光学测量束所行进并且遇到测量室（9）；自校准构件，适合于与待分析样品存在或不存在与测量室中无关地考虑到由于环境或操作条件引起的可能偏转，所述自校准构件包括：用于产生光学参考路径的构件（15），所述光学参考路径由光源发射的光学参考束所行进并且不遇到测量室；以及参考检测器（18）。所述测量装置显著之处在于其被设计成机载安装在汽车上并且包括用于选择性地混合光学测量束和光学参考束的构件（30、31），所述测量检测器（17）还充当参考检测器（18）。

Apparatus and method for detecting phase changes in a fluid using spectral recognition

Systems and methods are described, and one method includes passing an optical beam through a volume of the gas to a reception surface, applying spectroanalysis to the optical beam received at the reception surface, and determining from the spectroanalysis whether a liquid is carried by the volume of the gas.

Optical transmittance apparatus for fluids

An optical transmittance apparatus has a pair of reference channels of glass rods and a pair of sam - ple channels containing sample fluid. A beam splitter and mirror pass a first portion of an incident beam through an ingoing reference channel, and a second portion through an ingoing sample channel. The first portion is reflected back through an outgoing refer - ence channel, and the second portion back through an outgoing sample channel. The beam splitter and mirror directs the outgoing beams into a common outlet path. A partial disk selectively passes either portion. For positioning the disk, poles of a magnet mounted on the disk axle face windings made about an axis perpendicular to the axle, the windings being on the opposite side of a barrier plate from the poles. Current of one polarity through the windings effects one orientation of the disk, and reversed olarity reorients it perpendicularly.

Gas measuring system

本发明涉及一种气体测量系统，其包括：相干光源(1、201、301、401)，所述相干光源发射光束；探测器(8、208、308、408)；光路(2、202、302)，所述光路构造在所述光源(1、201、301、401)和所述探测器(8、208、308、408)之间；和气体室(4、204、304、404)，所述气体室布置在所述光源(1、201、301、401)和所述探测器(8、208、308、408)之间的光路中，使得所述探测器(8、208、308、408)接收穿过所述气体室(4、204、304、404)透射的光；其中，所述气体室(4、204、304、404)包括多孔陶瓷(11、211、311、411)；并且其中，所述气体室(4、204、304、404)具有光学路径长度，所述光学路径长度是所述气体室(4、204、304、404)的实际层厚度的数倍；其特征在于，此外在所述光源(1、201、301、401)和所述气体室(4、204、304、404)之间的光路(2、202、302)中还布置有光学元件(3、203、303、403)；由所述光源(1、201、301、401)发出的光束在入射到所述气体室(4、204、304、404)中时被扩张并且不聚焦。

Fluid measuring cell for a photoacoustic sensor

Beschrieben wird eine Fluidmesszelle (10) für einen photoakustischen Sensor (1) zum Erfassen einer Eigenschaft eines Probenfluids, wobei die Fluidmesszelle (10) aufweist ein Gehäuse (11) mit einem Fluidaufnahmeraum (12) zur Aufnahme des Probenfluids, wobei der Fluidaufnahmeraum (12) einen Erfassungsabschnitt (13) aufweist und eine Schallmesseinrichtung (14), wobei die Schallmesseinrichtung (14) derart in dem Erfassungsabschnitt (13) angeordnet ist, dass mit der Schallmesseinrichtung (14) eine sich in einem in dem Fluidaufnahmeraum (12) aufgenommen Fluid ausbreitende Schallwelle erfassbar ist. Dabei weist die Fluidmesszelle (10) der eingangs genannten Art einen Spiegel (15) mit einer eine elektromagnetische Anregungsstrahlung (30) reflektierenden Struktur auf, wobei der Spiegel (15) derart angeordnet und ausgestaltet ist, dass der Spiegel (15) in einem Betrieb der Fluidmesszelle (10) die Anregungsstrahlung (30) nach einem ersten Durchgang durch den Erfassungsabschnitt (13) in den Erfassungsabschnitt (13) zurückreflektiert. A fluid measuring cell (10) for a photoacoustic sensor (1) for detecting a property of a sample fluid is described, the fluid measuring cell (10) having a housing (11) with a fluid receiving space (12) for receiving the sample fluid, the fluid receiving space (12) has a detection section (13) and a sound measuring device (14), the sound measuring device (14) being arranged in the detecting section (13) in such a way that the sound measuring device (14) detects a sound wave propagating in a fluid contained in the fluid receiving space (12). is detectable. The fluid measuring cell (10) of the type mentioned at the outset has a mirror (15) with a structure that reflects electromagnetic excitation radiation (30), the mirror (15) being arranged and designed in such a way that the mirror (15) when the Fluid measuring cell (10) reflects the excitation radiation (30) back into the detection section (13) after a first passage through the detection section ( ...

Fiber module for breathing gas detection

一种用于二氧化碳描记或氧合描记的纤维组件(60)采用壳体(61)、准直器(64)、后向反射器(67)，以及单模光纤(63)。壳体(61)包括呼吸气体检测室(62)。准直器(64)被刚性地设置在壳体(61)内或被能拆卸地附接到壳体(61)，并且后向反射器(67)被刚性地设置在壳体(61)内或被能拆卸地附接到壳体(61)。准直器(64)与后向反射器(67)在壳体(61)内越过呼吸气体检测室(62)光学对准。光纤(63)与壳体(61)内部或外部的准直器(64)光学对准。在操作中，光纤(63)以发射气体感测光束通过准直器(64)，穿过呼吸气体检测室(62)，到达后向反射器(67)，并且光纤(63)接收从后向反射器(67)反射，穿过呼吸气体检测室(62)，通过准直器(64)，到达光纤(63)的气体检测光束。气体检测光束指示流过呼吸气体检测室(62)的任何气体中的二氧化碳或氧气的程度。

Gene analysis device

유전자 분석 장치가 개시된다. 개시된 유전자 분석 장치는 여기광을 샘플 솔루션에 조사하는 조명 광학계; 상기 샘플 솔루션의 바이오 반응 공간을 형성하는 것으로, 반사 패턴이 형성된 하나 이상의 미세 챔버를 구비하는 미세 유체 소자; 상기 미세 챔버 내에서의 바이오 반응에 의해 발생한 형광 신호를 검출하기 위한 것으로, 광검출기를 구비하는 검출 광학계;를 포함한다.

Concentration measurement device

The concentration measurement device 100 includes an electric unit 20 having a light source 22 and a photodetector 24 , a fluid unit 10 having a measurement cell 1 , optical fibers 11 and 12 for connecting the electric unit 20 and the fluid unit 10 and is configured to measure the concentration of the fluid in the measurement cell by detecting the light incident from the light source 22 to the measurement cell and then emitted from the measurement cell by the photodetector 24 , where optical connection parts 32 and 34 connected to the optical fibers 11, 12 and the light source 22 or the photodetector 24 are integrally provided in the electric unit 20.

Measuring head with illumination

The invention relates to a device (1) for the light spectroscopic analysis of a small amount of a liquid sample, comprising a receiving point (3) for receiving small amounts of the liquid sample, and light conductors (5, 6) which guide light of a light source to the sample and guide signal light from the sample in the direction of a detector, and is characterised in that an illumination source (7) is arranged below the receiving point (3), and a region (8) below the receiving point (3) which is permeable for the light of the illumination source (7), is provided such that the illumination light illuminates the receiving point (3).

Optical measuring apparatus and method for the analysis of samples contained in liquid drops

An optical measuring apparatus and method for analysis of samples contained in liquid drops provided by a liquid handling system has a liquid handling tip. A light source irradiates the liquid drop; a detector measures sample light; and an optics system with first optical elements transmits irradiation light, and a processor processes the measurement signals. The liquid drop is suspended at the liquid handling orifice of the liquid handling tip in a position where the liquid drop is penetrated by a first optical axis defined by the light source and the first optical elements. The liquid drop is physically touched only by the liquid handling tip and the liquid sample inside the liquid handling tip. A mutual adaption of the size and position of the liquid drop with respect to the first optical elements is achieved.

Apparatus and method for performing a light-absorption measurement of a specified amount of sample subject to pressure force

An apparatus and a method are disclosed for performing a light-absorption measurement of a specified amount of sample. A method for performing a light-absorption measurement of a specified amount of sample includes placing the sample on the surface of an apparatus including the surface and a light reflector, the light reflector being mechanically coupled with the surface and separated from the surface by a separation distance, changing the separation distance, while the light reflector remains mechanically coupled with the surface, to a first separation distance, and performing a first light-absorption measurement of the sample via the apparatus, while the separation distance is equal to the first separation distance, and while the sample is subject to pressure force.

Circulation type turbidity calibration and calibration equipment

本申请公开了一种流通式浊度校准标定设备，包括内置有第一隔板和第二隔板的配液室，配液室包括设置有第一入口和第二入口的搅拌间、缓冲间和设置有第一出口的溢流间，位于搅拌间和缓冲间之间的第一隔板设置有阀门，位于溢流间和缓冲间之间的第二隔板与配液室的底部之间留有缝隙；位于搅拌间的搅拌器；与第一入口相连的母液输送器；与第二入口相连的介质液输送器；与第一出口相连的标准液输送器；与标准液输送器相连的浊度计。本申请设备在标定标准液时标准液是流动式的，替代传统的静态水中测试，并且又能消除标准液中的干扰因素气泡，提升标定结果的准确性，同时无需使用固定浊度值的标准模块，成本降低。

Gene analysis device

A gene analysis apparatus is disclosed. The disclosed gene analyzing apparatus includes an illumination optical system for irradiating excitation light to a sample solution; A microfluidic device for forming a bioreaction space of the sample solution, the microfluidic device having at least one fine chamber in which a reflection pattern is formed; And a detection optical system for detecting a fluorescence signal generated by the bio-reaction in the fine chamber, the detection optical system including a photodetector.

Device for determining the optical transmittance of liquids

gas analyzer

【課題】アライメントの容易化を実現し易いガス分析計を提供する。【解決手段】ガス分析計１は、発光素子２から測定ガス３に光４を照射するとともに測定ガス３を通過した光４を受光することにより測定ガス３中の所定成分を測定するガス分析計１であって、発光素子２の光軸に平行でない少なくとも１つの軸線に沿って位置調節可能なベース部材１２と、光軸に平行でない少なくとも１つの軸線を中心に角度調節可能にベース部材１２に保持されるとともに発光素子２を保持する保持部材１３と、を有する、ガス分析計１である。【選択図】図１

Measuring head with lighting

Gas detector.

Fluorescence detector geometry

Excitation light (103) of a selected wavelength from an excitation monochromator is directed along the long axis of a flow cell (100) containing the sample to be analyzed, generating fluorescence. An emission monochromator is positioned at right angles to the plane of the excitation monochromator and receives the fluorescence from the flow cell (100) utilizing optical components positioned such that the entrance slit of the emission monochromator is aligned with the long axis of the emission window. The intensity of the output from the flow cell (100) is further maximised by positioning a retro-reflecting mirror (104) at the end of the flow channel (107) to effectively double the path-length of the excitation beam, and a reflecting surface on the side of the cell opposite the emission window to increase the collection efficiency and thereby increase the sensitivity of the detector.

Spectroanalytical gas measuring apparatus

Concentration measurement method

一種濃度測定方法，其在一濃度測定裝置中實行，該濃度測定裝置具有：被測定流體會流經的測定單元；光源，其朝向測定單元發出入射光；光檢出器，其檢出來自測定單元的出射光；演算部，其根據光檢出器的輸出而演算被測定流體的吸光度及濃度；及溫度感測器，其測定被測定流體的溫度，該濃度測定方法包含：使作為被測定流體之分子構造依照溫度而變化的氣體流動到測定單元內的工程；使藉由被測定流體所吸收的波長之光從光源朝向測定單元入射，同時利用光檢出器測定由測定單元出射的光之強度的工程；及根據利用溫度感測器而測定的溫度及光檢出器的輸出而演算被測定流體之濃度的工程。

Concentration measurement device

濃度測定裝置(100)，具備：具有光源(22)及光檢測器(24)之電氣單元(20)，具有測定胞(1)之流體單元(10)，及連接電氣單元(20)與流體單元(10)之光纖(11,12)；藉由使從光源(22)射入測定胞而由測定胞射出的光以光檢測器(24)檢測出而測定測定胞內的流體濃度的方式構成；於電氣單元(20)，被連接光纖(11,12)的光接續部(32,34)，及光源(22)或光檢測器(24)係一體地設置。

Liquid fuel property detection system

A liquid fuel property detection apparatus includes a fuel passage, a light emitting device for emitting a light including a plurality of predetermined wavelengths toward the fuel in the passage, a light receiving device for receiving the light passing through the fuel, and a calculation unit for calculating the concentration of at least one of aroma, paraffin and olefin, which are hydrocarbon component components contained in the fuel. The calculation unit calculates the concentration of a specific component, which is one of aroma, paraffin and olefin, based on the reference transmittance of light in the specific component and the actual transmittance calculated from the amount of light emitted by the light emitting device and the amount of light received by the light receiving device with respect to each wavelength of the light.

Method and apparatus for long term accurate measurement of ammonia gas concentration in a permanent ammonia gas environment

A method and apparatus are described for measuring the concentration of a gas with an absorption band in the ultraviolet range. The device includes an absorption chamber containing a gas, a light source, a selected optical bandpass filter, and ultraviolet photodetectors. The gas concentration is measured by the ratio of a transmitted intensity to an incident intensity with the Beer-Lambert Law relation. A second light source may be used for a compensation signal. A second method periodically changes the absorption coefficient by inserting a transparent material in the absorption path to measure the optical compensation signal. A third method periodically shortens the optical absorption path by moving the active detector closer to the light source to measure the optical compensation signal. The fourth method uses an optical element to deflect the optical beam to create a shorter absorption path as a reference for the incident signal using one detector.

Device for analyzing measuring gases, in particular breathing air

Vorrichtung (10) für die Analyse eines Messgases, vorzugsweise von Atemluft, insbesondere zur isotopengetrennten Detektion von Gasen in Luft, aufweisend: eine Messzelle (100) mit einem Einlass (300) und einem Auslass (160) für das zu analysierende Messgas; eine Laser-Detektor-Anordnung (220), mit wenigstens einer Laserlichtquelle (450) zur Erzeugung von Laserlicht und mit wenigstens einem Detektor (440, 460) zum Detektieren des Laserlichts, wobei die Laser-Detektor-Anordnung (220) derart ausgebildet ist, dass die Messzelle (100) sich in einem Strahlengang (L4) des Laserlichts zwischen Laserlichtquelle (450) und Detektor (440, 460) befindet; eine Auswerteeinheit, die dazu ausgebildet ist, ein Detektorsignal des Detektors (440, 460) zwecks Analyse des Messgases auszuwerten; dadurch gekennzeichnet, dass ein Kühl-Luftstrom innerhalb der Vorrichtung (10) so geführt ist, dass er entlang eines optomechanischen Blocks (210) der Vorrichtung (10) verläuft, welcher optomechanische Block (210) zumindest die Messzelle (100), den Einlass (300), den Auslass (160) und die dazwischen befindlichen Komponenten der Vorrichtung (10) mit Ausnahme der Laser-Detektor-Anordnung (220) nebst zugeordneter Kühlung (230, 240) umfasst, und dass eine elektronische Haupt-Platine (40) der Vorrichtung (10) durch den Kühl-Luftstrom kühlbar ist.

Patent JPWO2021182279A1

Verwendung von spinell, polykristallinem aluminiumoxid oder aluminiumoxynitrid als reflexionselement in einem messgerät zur absorptions-spektroskopischen gasmessung, dieses messgerät und verfahren zur absorptions-spektroskopischen gasmessung damit

Offenbart wird ein Messgerät (1) zur absorptions-spektroskopischen Gasmessung mit einem Reflexionselement (3) aus Spinell, polykristallinem Aluminiumoxid oder Aluminiumoxynitrid, das angeordnet ist, einen einfallenden Laserstrahl in Richtung auf ein Detektionselement (4) umzulenken, sowie ein Verfahren zur absorptions-spektroskopischen Gasmessung mit dem Messgerät (1). Außerdem wird die Verwendung von Spinell, polykristallinem Aluminiumoxid oder Aluminiumoxynitrid als Reflexionselement (3) offenbart, durch welches ein Laserstrahl in einem Messgerät (1) zur absorptions-spektroskopischen Gasmessung reflektierbar ist.

Cuvette d'analyse avec amplification de signal, barrette et dispositif d'analyse

用于多气体光谱传感器的紧凑型多通道气室

本公开的方面涉及多通道气室，该多通道气室包括一组两个或更多个反射器、输入准直光学部件和输出聚焦光学部件。输入和输出光学部件与两个或更多个反射器中的至少一个集成。例如，输入和输出光学部件可以集成在单个反射器的相对端上，或者可以集成在单个反射器的同一端上。输入和输出光学部件还可以与不同的反射器集成。在一些示例中，该组反射器和光学部件可以被制造在同一基板内。

Verbesserte gasentnahmekammer vom diffusionstyp

Verbesserte gasprobenkammer vom diffusionstyp

浓度测定装置

本发明提供一种浓度测定装置(100)，其具有：具有流路的测定单元(4)、光源(1)、检测从测定单元出射的光的光检测器(7)以及基于光检测器的输出来计算被测定流体的吸光度和浓度的运算部(8)，测定单元具有：单元主体、以与流路相接的方式固定于单元主体的窗部(3)以及对经由窗部而将入射到测定单元的光进行反射的反射部件(5)，窗部经由垫片(15)而通过窗按压部件(30)固定于单元主体(40)，在支撑窗部的垫片的第一面设置有环状的密封用突起部(15a)，在支撑垫片的与第一面相反的一侧的第二面的单元主体的支撑面(42)也设置有环状的密封用突起部(42a)。

具有双通道的气体浓度检测装置、检测方法及报警装置

本发明提供一种具有双通道的气体浓度检测装置、检测方法及报警装置，该具有双通道的气体浓度检测装置包括光源、凹面反射镜以及双通道检测器，光源发出的光线照射至凹面反射镜，凹面反射镜汇聚并反射光线至双通道检测器，双通道检测器包括位于同一水平面上的检测通道和参考通道，检测通道用于检测被气体吸收后的第一波长光的第一光强度，参考通道用于检测未被气体吸收的第二波长光的第二光强度，通过第一光强度和第二光强度得到气体的浓度。通过设置凹面反射镜，可以提高到达双通道检测器的光强度，进而提升双通道检测器的灵敏度。

基于非分光红外原理的长短双光路测量系统及方法

本发明涉及一种基于非分光红外原理的长短双光路测量系统及方法，属于气体浓度检测领域。本发明的目的是为了解决现有技术存在漂移导致测量不准确的问题，提供一种基于非分光红外原理的长短双光路测量系统及方法；该方法在非分光红外吸收式气体传感器的基础上，公开了一种长短双光路测量系统以及系统的具体设计方法，系统采用光程长度不同的两个气室通道进行测量，可以补偿红外光源光谱漂移所引发的传感器误差，提高传感器的精度，同时公开了该系统特有的标定方法，相较传统的标定方法更为科学合理，可以降低传感器因标定而引入的误差。

Measurement system including reflector

A measurement system is disclosed and includes a light source, a receiver, a measurement subject, and a reflector. The reflector is disposed on an opposite side of the measurement subject than are the light source and the receiver.

浓度测定装置

本发明提供一种浓度测定装置(100)，其具备：具有供气体流动的流路的测定单元(4)；发出向测定单元的入射光的光源(1)；检测从测定单元出射的光的光检测器(7)；检测测定单元内的气体压力的压力传感器(20)；检测测定单元内的气体温度的温度传感器(22)；基于压力传感器的输出(P)、温度传感器的输出(T)、光检测器的输出(I)以及吸光系数(α)运算气体的浓度的运算电路(8)，运算电路(8)构成为：使用基于温度传感器(22)的输出而决定的吸光系数(α)来运算浓度。

ＮＯ₂之濃度測定方法及ＴｉＣｌ₄之濃度測定方法

濃度測定裝置(100)係具備：發出朝測定空間(10A)入射的光之光源(22)、接收從測定空間出射的光之光檢測器(24)、及根據光檢測器的輸出來運算測定流體的濃度之運算控制回路(26)，光源包含：產生第1波長的光之第1發光元件(22a)、及產生第2波長的光之第2發光元件(22b)，根據測定流體的壓力或溫度，使用第1波長的光或第2波長的光來運算濃度。

Optical measuring cell

An optical measuring cell designed and provided for the absorption spectroscopic determination of at least one chemical and/or physical parameter of a fluid. A light beam for the absorption spectroscopic analysis is coupled into an interior of a housing, together with the fluid to be analyzed, via a coupling-in element connected to the housing such that the coupled-in light beam runs in the interior of the housing in parallel to the optical main axis of the measuring cell or the housing. A coupling-out element connected to the housing couples a light beam striking the coupling-out element out of the housing in order to supply the light beam, after multiple passes through the interior, to a detector for the absorption spectroscopic determination of a chemical and/or physical parameter of the irradiated fluid.

Epoxy molded gas cell for optical measurement and method of forming

The present invention relates to a gas cell (1) for optical measurements of gas content and/or concentration comprising a cavity (1a), at least one aperture (11) for gas exchange, at least one first socket (12) for light emitting means (2) and at least one second socket (13) for light detecting means (3). The length of an optical measuring path (A) through the cavity (1a) is defined by a direct or indirect distance between a light emitting means (2) in the first socket (12) and a light detecting means (3) in the second socket (13). The present invention teaches that an epoxy mold compound is used to form at least the parts of the gas cell (1) that define the optical measuring path (A).

Epoxy molded gas cell for optical measurement and method of forming