公开(公告)号：WO1996027127A1

公开(公告)日：1996-09-06

申请号：PCT/US1996001654

申请日：1996-02-08

Applicant: ANDROS INCORPORATED

Inventor： ANDROS INCORPORATED ,  KEWLEY, Eric, Lauren ,  BISBY, Joseph, D.

IPC: G01N27/00

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).

Abstract translation: 一种用于化学传感器（12）的用于气体排放物测试的改进的传感器支撑子组件（10）。 传感器子组件（10）包括与气体进气歧管块（40）可滑动地接合的传感器单元（12）。 传感器单元（12）具有形成传感器入口（26）的圆柱形基座（20）。 歧管块（40）包括气体入口（46），气体通道（42）和用于可滑动地接合歧管块（40）内的圆柱形基座（20）的U形槽（50,50a），以形成 传感器入口（26）和气体通道（42）之间的气密通道。 传感器子组件（10）还包括密封环（34），用于确保传感器单元（12）和歧管块（40）之间的气密密封。 这允许传感器单元（12）围绕圆柱形基座（20）的轴线旋转并使用卡缘连接器（16）。

公开(公告)号：WO1998020324A1

公开(公告)日：1998-05-14

申请号：PCT/US1997013651

申请日：1997-08-01

Applicant: ANDROS INCORPORATED

Inventor： ANDROS INCORPORATED ,  WILLIAMS, Kevin, G. ,  CHRISTENSEN, Kim, S.

IPC: 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.

Abstract translation: 非分散红外（NDIR）多气体分析仪（405）具有相对于入射的IR辐射轴定位的光学元件（950），使得其将窄带通中的几乎所有IR能量传递到 一个检测器（540）并且将窄带通过外的几乎所有的IR能量反射到另一个检测器（535）。 因此，光学元件（950）同时用作窄带通滤波器和分束器，其在带通内传输几乎所有的IR辐射，并且几乎将所有IR辐射反射到带通外。 此外，可以实现进入能量的分离而不需要延长的滚降。 这允许使用非常接近感兴趣的气体的吸收带的参考传输带。 更具体地，允许在使用分束器的红外分析器中使用位于碳氢化合物的吸收带和二氧化碳之间的参考传输带。

公开(公告)号：WO1992004100A1

公开(公告)日：1992-03-19

申请号：PCT/US1991006267

申请日：1991-08-30

Applicant: ANDROS INCORPORATED

Inventor： ANDROS INCORPORATED ,  PARNOFF, George, K.

IPC: B01D46/02

CPC classification number: B01D46/2403 ,  B01D46/0012 ,  B01D46/0023 ,  B01D2267/40 ,  F01N3/021 ,  F01N13/0097 ,  F01N2450/18 ,  F01N2450/30 ,  G01N1/2258 ,  G01N1/24 ,  G01N33/0011 ,  G01N2001/227 ,  Y02T10/20

Abstract: A filter assembly (100) for preparing gases for an exhaust gas analyzer has a single housing (101) including at least three filter cavities (103), (105) and (107), an inlet passage (180) and two outlet passages, (284) and (182). First filter cavity (103) includes a coarse filter, (121) through (125), for filtering particulate matter and for condensate condensation, with condensate draining into second filter cavity (105), which has disposed therein a fine filter (141), (142), for filtering condensate. Outlet passage (284) connected to second filter cavity (105) allows withdrawal of the condensate. Third filter cavity (107) has a fine filter (160) for filtering the exhaust gas and is coupled to first filter cavity (103). Second outlet passage (182) connects the third filter cavity (107) to a pump for removal of the gas to be analyzed. A multiple filter assembly in a single housing with large fine filter area, minimal void volume, minimal interconnections, and convenient access to the individual filters is provided, which achieves precise filtration of gases for analysis.

公开(公告)号：WO1995025950A1

公开(公告)日：1995-09-28

申请号：PCT/US1995003022

申请日：1995-03-09

Applicant: ANDROS INCORPORATED

Inventor： ANDROS INCORPORATED ,  DRUCKER, Steven ,  GODER, Alexey ,  KHALILI, Davood ,  WILLIAMS, Kevin ,  CHRISTENSEN, Ken ,  MAJOR, Emery

IPC: 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: 用于测量呼吸气体中二氧化碳浓度的装置和方法。 该装置是与呼吸气道串联连接的非分散气体分析器（100），其与任何主机系统普遍兼容。 分析器（100）包括支撑包含呼吸气体的样品池的壳体（102），其包含包含在减震材料中的红外辐射源（130），用于将辐射引导到通过样品池的准直束 ，用于分离光束并将其引导到两个红外检测器（142,146）的装置（145），用于测量样品池中二氧化碳的吸收量。 分析器具有两个加热舵机（118,152），一个调节样品池窗口的温度以抑制冷凝物积聚，一个调节围绕探测器（142,146）的环境温度，以确保更准确的测量。 分析器壳体（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。