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公开(公告)号：EP0755509A4
公开(公告)日：1997-07-23
申请号：EP95914003
申请日：1995-03-09
Applicant: ANDROS INC
Inventor： DRUCKER STEVEN , GODER ALEXEY , KHALILI DAVOOD , WILLIAMS KEVIN , CHRISTENSEN KEN , MAJOR EMERY
CPC classification number: G01N21/15 , A61B5/0836 , G01N21/3504 , G01N21/61 , G01N2021/158
Abstract: An apparatus and method for measuring the concentration of carbon dioxide in respiratory gases. The apparatus is a non-dispersive gas analyzer (100) attached in series with the respiratory airway which is universally compatible with any host system. The analyzer (100) includes a housing (102) which supports a sample cell containing the respiratory gases, and which contains an infrared radiation source (130) encased in shock absorbing material, means for directing the radiation into a collimated beam through the sample cell, means (145) for splitting the beam and directing it towards two infrared detectors (142, 146) for measuring the amount of absorption of carbon dioxide in the sample cell. The analyzer has two heating servos (118, 152), one regulating the temperature of the sample cell windows to inhibit condensation build-up and one regulating the ambient temperature surrounding the detectors (142, 146) to ensure more accurate measurements. Calibration means within the analyzer housing (102) stores and provides information characterizing performance parameters of the analyzer (100).
Abstract translation: 一种测量呼吸气体中二氧化碳浓度的装置和方法。 该设备是与呼吸气道串联的非分散性气体分析仪（100），其与任何主机系统通用兼容。 分析器（100）包括支撑含有呼吸气体的样品池的壳体（102），并且该壳体包含装入冲击吸收材料中的红外辐射源（130），用于将辐射引导通过样品池的准直束的装置 ，用于分离光束并将其引向两个红外检测器（142,146）以测量样品池中二氧化碳吸收量的装置（145）。 该分析仪具有两个加热伺服系统（118,152），一个调节样品室窗口的温度以抑制冷凝积聚，另一个调节检测器（142,146）周围的环境温度以确保更精确的测量。 分析器外壳（102）内的校准装置存储和提供表征分析器（100）的性能参数的信息。
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公开(公告)号：CA2184100C
公开(公告)日：2007-07-17
申请号：CA2184100
申请日：1995-03-09
Applicant: ANDROS INC
Inventor： DRUCKER STEVEN , GODER ALEXEY , KHALILI DAVOOD , WILLIAMS KEVIN , CHRISTENSEN KEN , MAJOR EMERY
IPC: G01N21/3504 , A61B5/083
Abstract: An apparatus and method for measuring the concentration of carbon dioxide in respiratory gases. The apparatus is a non-dispersive gas analyzer (100) attached in series with the respiratory airway which is universally compatible with any host system. The analyzer (100) includes a housing (102) which supports a sample cell containing the respiratory gases, and which contains an infrared radiation source (130) encased in shock absorbing material, means for directing the radiation into a collimated beam through the sample cell, means (145) for splitting the beam and directing it towards two infrared detectors (142, 146) for measuring the amount of absorption of carbon dioxide in the sample cell. The analyzer has two heating servos (118, 152), one regulating the temperature of the sample cell windows to inhibit condensation build-up and one regulating the ambient temperature surrounding the detectors (142, 145) to ensure more accurate measurements. Calibration means within the analyzer housing ( 102) stores and provides information characterizing performance parameters of the analyzer (100).
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公开(公告)号：DE3650600T2
公开(公告)日：1997-07-03
申请号：DE3650600
申请日：1986-10-10
Applicant: ANDROS INC
Inventor： PARNOFF GEORGE , PASSARO ROBERT , ROGERS RAYMOND , WILLIAMS KEVIN
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Patent Agency Ranking
公开(公告)号：AT462122T
公开(公告)日：2010-04-15
申请号：AT01968604
申请日：2001-09-06
Applicant: NEW A C INC DBA ANDROS INC
Inventor： WILLIAMS KEVIN
Abstract: An infrared gas analyzer includes an infrared source for emitting infrared energy, a sample cell for gases to be analyzed in the path of infrared energy emitted by the source and an assembly having first and second detectors also in the path of infrared energy and a third detector out of the path of infrared energy, mounted within the assembly and in close thermal proximity to each other and being responsive to impinging infrared energy to produce an electrical response. All detectors are sandwiched between a base and a single window that overlies them. The analyzer further includes a narrow band filter corresponding to an absorption wavelength band for a gas of interest and a narrow band reference filter corresponding to a reference wavelength band. Each of the narrow band filters are positioned outside the assembly and between the assembly and the source in the path of infrared energy.
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公开(公告)号：DE3650600D1
公开(公告)日：1997-04-03
申请号：DE3650600
申请日：1986-10-10
Applicant: ANDROS INC
Inventor： PARNOFF GEORGE , PASSARO ROBERT , ROGERS RAYMOND , WILLIAMS KEVIN
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公开(公告)号：CA2184100A1
公开(公告)日：1995-09-28
申请号：CA2184100
申请日：1995-03-09
Applicant: ANDROS INC
Inventor： DRUCKER STEVEN , GODER ALEXEY , KHALILI DAVOOD , WILLIAMS KEVIN , CHRISTENSEN KEN , MAJOR EMERY
IPC: G01N21/3504 , A61B5/083 , G01N21/61 , G01N21/35
Abstract: An apparatus and method for measuring the concentration of carbon dioxide in respiratory gases. The apparatus is a non-dispersive gas analyzer (100) attached in series with the respiratory airway which is universally compatible with any host system. The analyzer (100) includes a housing (102) which supports a sample cell containing the respiratory gases, and which contains an infrared radiation source (130) encased in shock absorbing material, means for directing the radiation into a collimated beam through the sample cell, means (145) for splitting the beam and directing it towards two infrared detectors (142, 146) for measuring the amount of absorption of carbon dioxide in the sample cell. The analyzer has two heating servos (118, 152), one regulating the temperature of the sample cell windows to inhibit condensation build-up and one regulating the ambient temperature surrounding the detectors (142, 145) to ensure more accurate measurements. Calibration means within the analyzer housing (102) stores and provides information characterizing performance parameters of the analyzer (100).
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公开(公告)号：DE3889734T2
公开(公告)日：1994-10-27
申请号：DE3889734
申请日：1988-09-09
Applicant: ANDROS INC
Inventor： MCCLATCHIE EDWARD , WILLIAMS KEVIN
Abstract: A non-dispersive infrared gas analyzer is disclosed that accurately measures the concentration levels of a plurality of gases within a gas mixture. The analyzer includes first and second sample cells and is utilized advantageously for the measurement of NOx and hydrocarbon gas present in the exhaust of an automobile engine. The gas mixture of the exhaust is chilled before entering the first sample cell to remove a substantial amount of the water vapor from that sample cell to facilitate measurement of the NOx gas. The second sample cell receives the gas mixtue in an unchilled state to allow for accurate measurement of the hydrocarbon gas. The analyzer includes processors which are utilized to further correct the NOx measurement and which also interact with each other to provide an output data stream that is representative of the concentration levels of the gases that are being analyzed.
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公开(公告)号：DE3889734D1
公开(公告)日：1994-06-30
申请号：DE3889734
申请日：1988-09-09
Applicant: ANDROS INC
Inventor： MCCLATCHIE EDWARD , WILLIAMS KEVIN
Abstract: A non-dispersive infrared gas analyzer is disclosed that accurately measures the concentration levels of a plurality of gases within a gas mixture. The analyzer includes first and second sample cells and is utilized advantageously for the measurement of NOx and hydrocarbon gas present in the exhaust of an automobile engine. The gas mixture of the exhaust is chilled before entering the first sample cell to remove a substantial amount of the water vapor from that sample cell to facilitate measurement of the NOx gas. The second sample cell receives the gas mixtue in an unchilled state to allow for accurate measurement of the hydrocarbon gas. The analyzer includes processors which are utilized to further correct the NOx measurement and which also interact with each other to provide an output data stream that is representative of the concentration levels of the gases that are being analyzed.
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