公开(公告)号：US5026992A

公开(公告)日：1991-06-25

申请号：US403587

申请日：1989-09-06

Applicant: Jacob Y. Wong

Inventor： Jacob Y. Wong

IPC: G01J1/16 ,  G01J1/18 ,  G01N21/25 ,  G01N21/31 ,  G01N21/35 ,  G08B17/117 ,  G08B29/20

CPC classification number: G08B29/20 ,  G01N21/255 ,  G01N21/3504 ,  G08B17/117 ,  G01J2001/161 ,  G01J2001/182 ,  G01N21/314 ,  G01N2201/0228 ,  G01N2201/06186 ,  G01N2201/0696

Abstract: An instrument for determining the concentration of a particular gas that might be present in a sample has no moving parts and is extremely compact. The instrument uses as a source of radiation a device that has a radiating element whose temperature is alternated between T.sub.1 and T.sub.2 and whose spectrum approximates that of a blackbody. Radiation from this source is passed through a dual pass band filter that has two non-overlapping pass bands, one of which is centered at a wavelength at which the gas absorbs and the other of which is centered at a wavelength at which the sample does not absorb radiation. After passing through this filter, the radiation passes through the sample chamber and then is intercepted by a detector which produces an electrical signal determined by the radiation intercepted. The electrical signal is processed to provide an indication of the concentration of the gas.

Abstract translation: 用于确定样品中可能存在的特定气体的浓度的仪器没有移动部件并且非常紧凑。 该仪器用作辐射源，该装置具有辐射元件，其温度在T1和T2之间交替，其光谱近似于黑体的辐射元件。 来自该源的辐射通过双通带滤波器，该双通带滤波器具有两个不重叠的通带，其中一个通道以气体吸收的波长为中心，另一个通过频带以样品不在波长为中心 吸收辐射。 在通过该滤光器之后，辐射通过样品室，然后由检测器截取，该检测器产生由截断的辐射确定的电信号。 处理电信号以提供气体浓度的指示。

公开(公告)号：US4293225A

公开(公告)日：1981-10-06

申请号：US53340

申请日：1979-06-29

Applicant: John E. G. Wheaton ,  David Griffiths ,  Richard C. M. Learner

Inventor： John E. G. Wheaton ,  David Griffiths ,  Richard C. M. Learner

IPC: G01J1/16 ,  G01J1/42 ,  G01N21/64

CPC classification number: G01N21/645 ,  G01N21/8507 ,  G01J2001/161 ,  G01J2001/1636 ,  G01J2001/4242 ,  G01N2201/0218 ,  G01N2201/0696

Abstract: A submersible fluorometer of the type having a source transmitting light pulses into the fluid in which the fluorometer is submersed to cause material in suspension to fluoresce and a fluoroescence detector, wherein a second detector is used to measure the intensity of light output of the source during each pulse of light, the outputs of the fluorescence detector and the second detector are sampled during each pulse of light and a ratioing circuit is used to determine the intensity of the fluorescence relative to the intensity of the light causing fluorescence. This arrangement compensates the output for both short and long term drift effects particularly in the light source. Preferably both the light transmitted to the said fluid and the light received therefrom is filtered, in the first case to remove light having wavelengths equal to or longer than that of the fluorescence and in the second case to remove light having wavelengths shorter than that of the fluoroscence.

Abstract translation: 一种潜水荧光计，其具有将光脉冲传输到荧光计浸没在其中以使材料悬浮以发荧光的荧光的荧光源，以及荧光检测器，其中使用第二检测器来测量源的光输出强度 每个脉冲光，荧光检测器和第二检测器的输出在光的每个脉冲期间被采样，并且使用比例电路来确定相对于引起荧光的光的强度的荧光强度。 这种布置补偿特别是在光源中的短期和长期漂移效应的输出。 优选地，透射到所述流体的光和从其接收的光都被过滤，在第一种情况下，以除去波长等于或长于荧光的波长的光，并且在第二种情况下，去除具有比荧光的波长短的波长的光 荧光

公开(公告)号：JPS6189543A

公开(公告)日：1986-05-07

申请号：JP21203485

申请日：1985-09-24

Applicant: Kollmorgen Tech Corp

Inventor： ARAN JII KURABETSU ,  SUTANREI JIEI KISHIYUNAA

IPC: G01N21/27 ,  G01J1/16 ,  G01J1/36 ,  G01N21/59

CPC classification number: G01N21/5907 ,  G01J1/36 ,  G01J2001/161 ,  G01N2021/5992

公开(公告)号：JPS59136628A

公开(公告)日：1984-08-06

申请号：JP25250783

申请日：1983-12-29

Applicant: Milton Roy Co

Inventor： UIRIAMU TEII KEISHII JIYUNIAA

IPC: G01J3/42 ,  F21V19/04 ,  G01J1/16 ,  G01N21/03 ,  G01N21/05 ,  G01N21/25 ,  G01N21/85

CPC classification number: F21V19/04 ,  G01J1/1626 ,  G01J2001/161 ,  G01N21/0317 ,  G01N21/05 ,  G01N21/255 ,  G01N21/85

公开(公告)号：WO1994009266A1

公开(公告)日：1994-04-28

申请号：PCT/DE1993000995

申请日：1993-10-13

Applicant: IRIS-GMBH INFRARED & INTELLIGENT SENSORS ,  BITTNER, Harald ,  SCHUBERT, Bernd ,  TRULL, Thomas ,  BÖNICK, Rainer

Inventor： IRIS-GMBH INFRARED & INTELLIGENT SENSORS

IPC: F01N07/00

CPC classification number: F01N11/00 ,  G01J2001/161 ,  G01J2001/4242 ,  G01N21/3504 ,  G01N2015/0662 ,  G01N2021/3129 ,  G01N2021/3166 ,  G01N2021/8578 ,  G01N2201/08 ,  G01N2201/1245 ,  Y02T10/47

Abstract: A sensor arrangement monitors the conversion rate of an exhaust gas catalyst (1) arranged in the tail-pipe (6) of an internal combustion engine (16). The sensor arrangement has two element pairs composed each of an infrared radiation element and of an infrared sensor element (2.1/4.1 or 2.2/4.2) arranged opposite to the infrared radiation element with respect to the exhaust gas flow (5.1, 5.2). These pairs of infrared radiation elements and infrared sensor elements are arranged one adjacent to the input side and the other adjacent to the output side of the exhaust gas pipe (6, 7) of the catalyst (1). The spectral sensitivity of each pair is tuned to the absorption or emission spectrum of at least one gas, which is always the same, of the exhaust gas mixture. A comparator arrangement (26) receives the output signals of both infrared sensor elements (4.1, 4.2) or values calculated in the same manner from said output signals for both infrared sensor elements, and generates a signal from the output signals or calculated values. The signal contains information on changes of concentration of the gas in the exhaust gas mixture in the catalyst (1), thus on the conversion rate of the catalyst.

公开(公告)号：WO1993011418A1

公开(公告)日：1993-06-10

申请号：PCT/US1991008822

申请日：1991-11-25

Applicant: GAZTECH INTERNATIONAL CORPORATION

Inventor： GAZTECH INTERNATIONAL CORPORATION ,  WONG, Jacob, Y.

IPC: G01N01/00

CPC classification number: G01N21/0303 ,  G01J2001/161 ,  G01J2001/182 ,  G01N1/2258 ,  G01N21/0332 ,  G01N21/05 ,  G01N21/255 ,  G01N21/314 ,  G01N21/3504 ,  G01N2001/2261 ,  G01N2021/0321 ,  G01N2021/0385 ,  G01N2021/052 ,  G01N2201/0228 ,  G01N2201/06186 ,  G01N2201/0696 ,  G08B17/117 ,  G08B29/20

Abstract: A gas sample chamber (10) for use in a gas analyzer consists of an elongated hollow tube (21) having an inwardly-facing specularly-reflective surface (22) that permits the tube to function also as a light pipe for conducting radiation from a source (20) to a detector (16) through the sample gas. A number of apertures (24) in the wall of the elongated hollow tube permit the sample gas to enter and exit. Particles of smoke and dust of a size greater than 0.1 micron are kept out of the chamber by use of a semi-permeable membrane (28) that spans the apertures in the hollow tube. Condensation of the sample gas components is prevented by heating the sample chamber electrically to a temperature above the dew point of the component of concern.

Abstract translation: 用于气体分析仪的气体样品室（10）由具有向内的镜面反射表面（22）的细长的中空管（21）组成，该中空管（21）允许管也用作用于传导辐射的光管 源（20）通过样品气体传送到检测器（16）。 在细长的中空管的壁中的许多孔（24）允许样品气体进出。 通过使用跨越中空管中的孔的半透膜（28）将尺寸大于0.1微米的烟雾和灰尘颗粒保持在室外。 通过将样品室电加热到高于所关注部件的露点的温度来防止样品气体组分的冷凝。

公开(公告)号：WO1990011509A1

公开(公告)日：1990-10-04

申请号：PCT/US1989001764

申请日：1989-05-02

Applicant: ELECTRONIC INSTRUMENTATION AND TECHNOLOGY, INC.

Inventor： ELECTRONIC INSTRUMENTATION AND TECHNOLOGY, INC. ,  MAY, Joe, T. ,  CASACIA, Edward, A.

IPC: G01N21/59

CPC classification number: G01N21/251 ,  G01J1/1626 ,  G01J2001/161 ,  G01J2001/1636 ,  G01N21/09 ,  G01N21/8507 ,  G01N2021/0162 ,  G01N2201/0693 ,  G01N2201/12761 ,  G03F7/30

Abstract: Instrumentation for measuring the amount of material dissolved in a liquid solution which utilizes electro-optic technology based on the Beer-Lambert Law is implemented either as a portable, battery powered model or integrated in an automated process monitoring system. In the portable, battery powered model, a sample probe (14) is inserted into a solution to be measured. The results of the measurement are displayed on a display (22). The displayed results are frozen for a predetermined period of time at the expiration of which, the power is turned off to conserve battery power. In the automated process monitoring model, a solution loading analyzer (100) is supplied with a sample of solution to be analyzed. A probe (14) positioned in a measurement well (200) is used to determine the ratio of incident light to light transmitted through the sample. A spray nozzle (212) is used for cleaning the probe head (16).

Abstract translation: 用于测量溶解在基于Beer-Lambert法的电光技术的液体溶液中的材料的量的仪器可以作为便携式，电池供电型或者集成在自动化过程监控系统中来实现。 在便携式电池供电的模型中，将样品探针（14）插入待测量的溶液中。 测量结果显示在显示器（22）上。 显示的结果被冻结预定的时间段，在此期间电源被关闭以节省电池电力。 在自动化过程监控模型中，向溶液负载分析仪（100）提供待分析的溶液样品。 位于测量井（200）中的探头（14）用于确定入射光与穿过样品的光的比例。 喷嘴（212）用于清洁探头（16）。

公开(公告)号：WO1987002459A1

公开(公告)日：1987-04-23

申请号：PCT/US1986002108

申请日：1986-10-06

Applicant: HIBSHMAN CORPORATION ,  WONG, Jacob, Yauman

Inventor： HIBSHMAN CORPORATION

IPC: G01N21/61

CPC classification number: G01N21/3504 ,  G01J2001/161 ,  G01J2003/1269 ,  G01J2005/626 ,  G01N21/314 ,  G01N21/3518 ,  G01N2021/3129 ,  G02F1/0147

Abstract: A multi-component nondispersive gas analyzer of a type typically used to measure the concentrations of gases present in automotive emissions and in breath analyzers has no moving parts and employs electrically operated means for effectively inserting and removing a reference cell (34) from the optical path and for selecting a particular filter to determine momentarily the wavelengths of radiation being examined. The means for accomplishing these ends include a substrate (84) on which a layer (82) of vanadium dioxide is deposited. The layer is a good reflector at temperatures greater than 67oC and reflects only slightly at lower temperatures. The layer is alternately heated by an electrical current and is then allowed to cool to provide the desired optical switching action. This electrically-controlled selectively reflective layer is then used in conjunction with the reference cell (34) and with an array of filters (46) to implement the necessary switching and selection of the components.

公开(公告)号：WO2017017397A1

公开(公告)日：2017-02-02

申请号：PCT/GB2016/050055

申请日：2016-01-11

Applicant: GAS MEASUREMENT INSTRUMENTS LIMITED

Inventor： MASSIE, Crawford ,  MATHIESON, Fraser ,  GLENDINNING, Andrew

IPC: G01N21/3504 ,  G01J1/16 ,  G01N21/31

CPC classification number: G01N21/3504 ,  G01J1/1626 ,  G01J2001/161 ,  G01N21/314 ,  G01N2021/3166 ,  G01N2201/1215

Abstract: A method of identifying the presence of a first gas such as methane within a sample, for example containing natural gas. A detector is provided having a sensor responsive to a first wavelength, a sensor responsive to a second wavelength, and a sensor for collecting reference readings. A gas sample is analysed to obtain a first absorption reading corresponding to the first wavelength, a second absorption reading corresponding to the second wavelength and a reference reading. A first absorption figure is calculated using the first absorption reading and the reference reading, and a second absorption figure using the second absorption reading and the reference reading. A lineariser function is applied to each of the first and second absorption figures to calculate first and second concentration figures. The sensor for each wavelength is calibrated for detecting the first gas such that the data collected at each wavelength gives the same reading when only said first gas is present in a sample. The ratio of the first concentration figure to the second concentration figure is then calculated, and the ratio used to identify whether only the first gas is present in the sample.

Abstract translation: 识别样品内例如含有天然气的第一气体如甲烷的存在的方法。 提供了一种检测器，其具有响应于第一波长的传感器，响应于第二波长的传感器以及用于收集参考读数的传感器。 分析气体样本以获得对应于第一波长的第一吸收读数，对应于第二波长的第二吸收读数和参考读数。 使用第一吸收读数和参考读数来计算第一吸收图，并且使用第二吸收读数和参考读数来计算第二吸收图。 将线性化函数应用于第一和第二吸收图中的每一个以计算第一和第二浓度图。 每个波长的传感器被校准用于检测第一气体，使得当在样品中仅存在所述第一气体时，在每个波长处收集的数据给出相同的读数。 然后计算第一浓度数字与第二浓度数字的比率，并且该比率用于识别样品中是否仅存在第一种气体。

公开(公告)号：WO1990003565A1

公开(公告)日：1990-04-05

申请号：PCT/US1989004202

申请日：1989-09-27

Applicant: THE STANDARD OIL COMPANY

Inventor： THE STANDARD OIL COMPANY ,  BOOS, Donald, L.

IPC: G01N21/35

CPC classification number: G01N21/314 ,  F02D19/0628 ,  F02D19/084 ,  F02D19/087 ,  F02D2200/0611 ,  G01J5/12 ,  G01J2001/161 ,  G01N21/3504 ,  G01N33/2852 ,  G01N2021/3166 ,  G01N2201/0636 ,  Y02T10/36

Abstract: A sensor and method for measuring the concentration of alcohol in an alcohol-hydrocarbon mixture for use with flexible fuel vehicles. The sensor and method are characterized by a pair of detectors or sensing elements (27, 28) which detect absorbance of two different wavelength bands of energy transmitted through the fuel. The first wavelength band is absorbed by the alcohol and substantially unabsorbed by the hydrocarbons and other non-alcohols in the fuel mixture. The second or reference wavelength band is selected where the absorbance of alcohols and hydrocarbons is essentially the same and preferably essentially zero. The output of the two detectors or sensing elements (27, 28) is ratioed to provide a signal representative of the alcohol content of the fuel mixture. In a preferred embodiment, the sensing elements (27, 28) are included in a differential thermopile (98).