公开(公告)号：AU3775178A

公开(公告)日：1980-01-10

申请号：AU3775178

申请日：1978-07-04

Applicant: ANDROS INCORPORATED

Inventor： JASSAWALLA JAL SOHRAB

IPC: A61M1/00 ,  A61M5/142 ,  F04B43/00 ,  F04B43/08 ,  F04B43/02 ,  A61M5/14

公开(公告)号：AT4518T

公开(公告)日：1983-09-15

申请号：AT79901353

申请日：1979-10-01

Applicant: ANDROS INCORPORATED

Inventor： BUROUGH, IRVIN GEORGE

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

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：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：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。

公开(公告)号：EP1332344A1

公开(公告)日：2003-08-06

申请号：EP01975271.6

申请日：2001-09-20

Applicant: ANDROS INCORPORATED

Inventor： WILLIAMS, Kevin G. ,  KURTZ, Joseph, John

IPC: G01J3/06

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：EP0241522B1

公开(公告)日：1997-02-26

申请号：EP86906219.0

申请日：1986-10-10

Applicant: Andros Incorporated

Inventor： PARNOFF, George, Kenneth ,  PASSARO, Robert, Eugene ,  ROGERS, Raymond, Earl ,  WILLIAMS, Kevin, Graham

IPC: G01N21/35 ,  G01N21/61

CPC classification number: G01N21/3504 ,  G01N21/314 ,  G01N2021/3129 ,  G01N2201/127 ,  G01N2201/12723

Abstract: A gaz analyzer comprising a sample cell (21) for containing a gas mixture to be analyzed, a source (11) for producing and directing infrared energy through the sample cell, a rotary filter wheel (17) having at least one filter thereon for passing infrared energy limited to a wavelength band within the characteristic absorption band of a predetermined gas and having a dark level region substantially opaque to infrared energy, a drive (19, 20) for supporting and rotating the filter wheel to successively interpose the filter and the dark level region between the source and the sample cell in the path (13) of the infrared energy directed by the source, a detector (15) for detecting infrared energy passing through the sample cell and producing an electrical signal representative thereof, and a signal processor (24) connected to the detector means for producing an output indicating the concentration of the predetermined gas in the sample cell by comparing the electrical signals produced by the detector with the filter positioned in the infrared energy path and with the dark level region positioned in the infrared energy path. The dark level region has a substantially fully reflective surface oriented toward the sample cell (21) when positioned in the infrared energy path whereby infrared energy impinging thereon is reflected.

公开(公告)号：EP0755509A1

公开(公告)日：1997-01-29

申请号：EP95914003.0

申请日：1995-03-09

Applicant: ANDROS INCORPORATED

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

IPC: A61B5 ,  G01N21

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).

公开(公告)号：EP1332346A1

公开(公告)日：2003-08-06

申请号：EP01968604.7

申请日：2001-09-06

Applicant: ANDROS INCORPORATED

Inventor： WILLIAMS, Kevin, G.

IPC: 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）。