公开(公告)号：IT7850154D0

公开(公告)日：1978-07-04

申请号：IT5015478

申请日：1978-07-04

Applicant: ANDROS INC

IPC: A61M1/00 ,  A61M5/142 ,  F04B43/00 ,  F04B43/08 ,  A61M

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

IPC: A61B5/083 ,  G01N21/35 ,  G01N21/61

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。

公开(公告)号：EP1332346A4

公开(公告)日：2006-01-18

申请号：EP01968604

申请日：2001-09-06

Applicant: ANDROS INC

Inventor： WILLIAMS KEVIN G

IPC: G01J3/12 ,  G01J3/36 ,  G01J3/42 ,  G01J5/60 ,  G01N21/05 ,  G01N21/31 ,  G01N21/35 ,  G01J5/02

CPC classification number: G01J3/36 ,  G01J3/12 ,  G01J3/42 ,  G01J5/602 ,  G01N21/05 ,  G01N21/3504 ,  G01N2021/3137 ,  G01N2021/3166

Abstract: An infrared spectrophotometer is described wherein an infrared source (11) is provided for emitting infrared energy. A sample cell (15) is provided for containing gases to be analyzed and is positioned in the path of infrared energy emitted by the source. A detector assembly includes first, second and third thermopile detectors (55, 57, 61) mounted in thermal proximity to each other and being responsive to impinging infrared energy to produce an electrical response. The first and second detectors (55, 57) are positioned in the path of the infrared energy and the third detector (61) is positioned out of the path of infrared energy emitted by the source (11). The spectrophotometer further comprises a narrow band filter (43) corresponding to an absorption wavelength band for a gas of interest and a narrow band reference filter (45) corresponding to a reference wavelength band. Each of the narrow band filters (43, 45) are positioned between the detector assembly and the source (11) in the path of infrared energy emitted by the source (11) on to a respective one of the first and second detectors (55, 57).

Abstract translation: 描述了一种红外分光光度计，其中提供红外源（11）用于发射红外能量。 提供样品池（15）用于容纳待分析的气体并位于由源发射的红外能量的路径中。 一种检测器组件包括第一，第二和第三热电堆检测器（55,57,61），所述第一，第二和第三热电堆检测器（55,57,61）彼此热接近地安装并且响应于撞击红外能量以产生电响应。 第一和第二检测器（55,57）位于红外能量的路径中，并且第三检测器（61）位于由源（11）发射的红外能量的路径之外。 分光光度计还包括对应于感兴趣气体的吸收波长带的窄带滤波器（43）和对应于参考波长带的窄带参考滤波器（45）。 每个窄带滤波器（43,45）在由源（11）发射的红外能量的路径上被定位在检测器组件和源（11）之间，分别连接到第一和第二检测器（55,65） 57）。

公开(公告)号：EP1332344A4

公开(公告)日：2006-02-08

申请号：EP01975271

申请日：2001-09-20

Applicant: ANDROS INC

Inventor： WILLIAMS KEVIN G ,  KURTZ JOSEPH JOHN

IPC: G01J3/06 ,  G01J3/12 ,  G01J3/18 ,  G01J3/42 ,  G01N21/35

CPC classification number: G01J3/18 ,  G01J3/06 ,  G01J3/42 ,  G01J2003/1204 ,  G01N21/3504

Abstract: Very generally, the gas analyzer (10) of the invention includes a source of infrared energy (12), a sample cell (14) for containing an analyte gas mixture positioned in the path of infrared energy, and a monochromator (26) including a movable diffraction grating (34) for producing a beam of infrared energy wherein the constituent wavelengths are spectrally separated. The device also includes a wide band interference filter (42) for transmitting a predetermined wavelength band spanning the characteristic absorption wavelength of each of a plurality of constituent gases in the analyte gas mixture. A detector (16) positioned to receive radiation passing through the filter (42) produces an electrical response related to the infrared energy impinging thereon. The monochromator (26) includes provision (38, 40) for moving the diffraction grating (34) to sequentially cause infrared energy of different wavelengths to impinge upon the detector (16), and for intermittently causing infrared energy directed toward the detector (16) from the source (12) to be blocked by the interference filter (42).

公开(公告)号：EP0939898A4

公开(公告)日：2000-03-15

申请号：EP97938103

申请日：1997-08-01

Applicant: ANDROS INC

Inventor： WILLIAMS KEVIN G ,  CHRISTENSEN KIM S

IPC: G01N21/35 ,  G01N21/61

CPC classification number: G01N21/61 ,  G01N2201/0227 ,  G01N2201/0228

Abstract: A non-dispersive infrared (NDIR) multi-gas analyzer (405) has an optical element (950) that is positioned with respect to the axis of incident IR radiation such that it passes nearly all of the IR energy within a narrow band pass to one detector (540) and reflects nearly all of the IR energy outside the narrow band pass to another detector (535). Thus, the optical element (950) simultaneously functions both as a narrow band pass filter and a beam splitter, which transmits nearly all the IR radiation within a band pass and reflects nearly all the IR radiation outside the band pass. Additionally, the separation of the incoming energy can be achieved without an extended roll off. This allows using a reference transmission band that is very close to the absorption band of the gases of interest. It more specifically allows using a reference transmission band that is located between the absorption bands for hydrocarbons and carbon dioxide in an infrared analyzer that uses beam splitters.

公开(公告)号：EP0812417A4

公开(公告)日：1998-08-19

申请号：EP96903800

申请日：1996-02-08

Applicant: ANDROS INC

Inventor： KEWLEY ERIC LAUREN ,  BISBY JOSEPH D

IPC: G01N27/409 ,  F02D35/00 ,  G01N27/00 ,  G01N33/00

CPC classification number: G01N33/0009

Abstract: An improved sensor support subassembly (10) for a chemical sensor (12) in the testing of gaseous emissions. The sensor subassembly (10) includes a sensor unit (12) slidably engaged with a gas intake manifold block (40). The sensor unit (12) has a cylindrical base (20) which forms the sensor inlet (26). The manifold block (40) includes a gas intake (46), a gas channel (42), and a U-shaped slot (50, 50a) for slidably engaging the cylindrical base (20) within the manifold block (40) to form an air-tight passage between the sensor inlet (26) and the gas channel (42). The sensor subassembly (10) also includes a sealing ring (34) for insuring an air-tight seal between the sensor unit (12) and manifold block (40). This allows the sensor unit (12) to be rotated about the axis of the cylindrical base (20) and use of a card-edge connector (16).

公开(公告)号：EP0022789A4

公开(公告)日：1981-02-12

申请号：EP79901353

申请日：1980-04-23

Applicant: ANDROS INC

Inventor： BUROUGH IRVIN GEORGE

IPC: G01N21/27 ,  G01N21/35 ,  G01N21/61 ,  G01N21/01

CPC classification number: G01N21/3504