Gas Monitoring System and Sidestream Gas Measurement System Adapted to Communicate with a Mainstream Gas Measurement System
    42.
    发明申请
    Gas Monitoring System and Sidestream Gas Measurement System Adapted to Communicate with a Mainstream Gas Measurement System 审中-公开
    气体监测系统和侧流气体测量系统适用于与主流气体测量系统进行通信

    公开(公告)号:US20080058667A1

    公开(公告)日:2008-03-06

    申请号:US11931858

    申请日:2007-10-31

    Abstract: A method and apparatus for interfacing a plurality of gas measurement systems, including a mainstream and a sidestream gas measurement system, to a host system via an interface unit. The present invention also pertains to a sidestream gas measurement system that output signals emulating the signals output by a mainstream gas measurement system or portion thereof, so that the sidestream gas measurement system can seamlessly communicate with a host system configured to communicate with a mainstream gas measurement system or a portion thereof.

    Abstract translation: 一种用于经由接口单元将多个气体测量系统(包括主流和侧流气体测量系统)连接到主机系统的方法和装置。 本发明还涉及一种侧流气体测量系统,其输出模拟由主流气体测量系统或其一部分输出的信号的信号,使得侧流气体测量系统可以与被配置为与主流气体测量通信的主机系统无缝地通信 系统或其一部分。

    Gas monitoring system and sidestream gas measurement system adapted to communicate with a mainstream gas measurement system
    43.
    发明申请
    Gas monitoring system and sidestream gas measurement system adapted to communicate with a mainstream gas measurement system 失效
    气体监测系统和侧流气体测量系统适用于与主流气体测量系统进行通信

    公开(公告)号:US20040186391A1

    公开(公告)日:2004-09-23

    申请号:US10781382

    申请日:2004-02-18

    Abstract: A method and apparatus for interfacing a plurality of gas measurement systems, including a mainstream and a sidestream gas measurement system, to a host system via an interface unit. The present invention also pertains to a sidestream gas measurement system that output signals emulating the signals output by a mainstream gas measurement system or portion thereof, so that the sidestream gas measurement system can seamlessly communicate with a host system configured to communicate only a mainstream gas measurement system or a portion thereof.

    Abstract translation: 一种用于经由接口单元将多个气体测量系统(包括主流和侧流气体测量系统)连接到主机系统的方法和装置。 本发明还涉及一种侧流气体测量系统,其输出仿真由主流气体测量系统或其一部分输出的信号的信号,使得侧流气体测量系统可与主系统无缝地通信,该主机系统仅配置为仅传送主流气体测量 系统或其一部分。

    Selective natural gas detecting apparatus
    44.
    发明授权
    Selective natural gas detecting apparatus 失效
    选择性天然气检测仪

    公开(公告)号:US4958076A

    公开(公告)日:1990-09-18

    申请号:US308469

    申请日:1989-02-10

    Abstract: A selective gas detecting apparatus for determining the concentration and type of hydrocarbon gas in a gas sample based upon absorption of infrared radiation by the gas sample, the apparatus having at least two infrared radiation absorption channels with the wavelengths for measurement in the two channels selected as 3.2 microns and 3.4 microns, signals in the two channels being processed to formulate an indication of absorbance of hydrocarbons at the selected wavelength, the absorbance signal in one channel being displayed as an indication of concentration of approximately the total hydrocarbon gas in air and the ratio of absorbances being displayed as an indication of the type of hydrocarbon in air and independent of the concentration of the gas.

    Abstract translation: 一种选择性气体检测装置,用于基于气体样品的红外辐射的吸收来确定气体样品中的烃气体的浓度和类型,所述装置具有至少两个具有用于在两个通道中测量的波长的红外辐射吸收通道,其被选择为 3.2微米和3.4微米,处理两个通道中的信号以配制所选波长的烃的吸光度的指示,一个通道中的吸光度信号显示为空气中总烃类气体浓度的指示, 的吸光度显示为空气中碳氢化合物类型的指示,而与气体的浓度无关。

    Analyzer with compensation
    45.
    发明授权
    Analyzer with compensation 失效
    分析仪补偿

    公开(公告)号:US4849636A

    公开(公告)日:1989-07-18

    申请号:US195715

    申请日:1988-05-18

    CPC classification number: G01N21/37 G01N2201/1215

    Abstract: The present invention pertains to an apparatus that is capable of correcting for inaccuracies caused by molecular collision broadening in analyzers. The apparatus includes an analyzer for analyzing a fluid. The analyzer is capable of producing an output signal corresponding to the fluid in the analyzer. The apparatus also includes a device for detecting molecular collision broadening in the fluid. The detecting device produces an output signal proportional to the molecular collision broadening. There is also a device for correcting inaccuracies in the analyzer output signal caused by molecular collision broadening. The correcting device is disposed to receive the analyzer output signal and the detecting device output signal, and is capable of producing an output signal corresponding thereto. Preferably, the detecting device includes a thermal conductivity cell and the correcting device is either a voltage control gain operational amplifier or a computer.

    Abstract translation: 本发明涉及一种能够校正分析仪中分子碰撞扩大引起的不准确性的装置。 该装置包括用于分析流体的分析器。 分析仪能够产生与分析仪中的流体相对应的输出信号。 该装置还包括用于检测流体中的分子碰撞变宽的装置。 检测装置产生与分子碰撞加宽成比例的输出信号。 还有一种用于校正由分子碰撞加宽引起的分析仪输出信号的不准确性的装置。 校正装置被配置为接收分析器输出信号和检测装置输出信号,并且能够产生与其对应的输出信号。 优选地,检测装置包括热导电池,校正装置是电压控制增益运算放大器或计算机。

    Interferent-free fluorescence detection of sulfur dioxide
    46.
    发明授权
    Interferent-free fluorescence detection of sulfur dioxide 失效
    二氧化硫的无干扰荧光检测

    公开(公告)号:US4077774A

    公开(公告)日:1978-03-07

    申请号:US768294

    申请日:1977-02-14

    CPC classification number: G01N21/643 G01N2201/1215 Y10T436/186

    Abstract: Method and apparatus for improved detection of sulfur dioxide by fluorescence are disclosed wherein the effects of interferent hydrocarbons in the test sample are eliminated. In apparatus detecting sulfur dioxide by detecting the fluorescence of sulfur dioxide from narrow band ultraviolet radiation by photomultiplier means, the test sample being fed to the fluorescence chamber is first passed through a reactor to oxidize the hydrocarbons from the sample. The effect of this oxidization is to convert interfering hydrocarbon components in the sample gas into non-interfering materials. In one embodiment employing ozone, moisture removal apparatus is added prior to the oxidization reaction to prevent the error producing formation of H.sub.2 SO.sub.4.

    Abstract translation: 公开了通过荧光检测二氧化硫的方法和装置,其中消除了测试样品中干扰物烃的影响。 在通过光电倍增法从窄带紫外线辐射中检测二氧化硫的荧光的装置中检测二氧化硫的装置中,首先将进入荧光室的试样通过反应器从样品中氧化烃。 这种氧化的作用是将样品气体中的干扰性烃成分转化为非干扰材料。 在使用臭氧的一个实施方案中,在氧化反应之前加入除湿装置以防止产生形成H 2 SO 4的错误。

    Method and system for the infrared analysis of gases

    公开(公告)号:US3790797A

    公开(公告)日:1974-02-05

    申请号:US3790797D

    申请日:1971-09-07

    CPC classification number: G01N21/314 G01N21/3504 G01N2201/1215

    Abstract: A dual path analyzer and a single path analyzer are disclosed, each for determining the concentration of one or more gaseous components in a mixture of gases. The preferred analyzer is a single path instrument which includes a source of infrared energy, a detector for the energy, a sample cell for the gas mixture positioned between the source and detector, and a filter wheel having a plurality of filters and a source blocking device positioned between the sample cell and detector for sequentially interposing the filters and the source blocking device between the source and the detector. Means are provided for amplifying the output signal of the detector and for processing the signal to provide a direct readout display which indicates the concentration of the gaseous components being analyzed. The processing electronics preferably include provision for calibrating the analyzer with clean ambient air, for compensating for background levels of radiation, and for correcting the displayed output signal for the effects of absorption band interferences between two or more gases in the gas mixture. The structure of the dual path analyzer includes a source of infrared energy, a detector for the energy, a sample cell for the gas mixture, a cell for a reference gas, and optical path means between the source and detector for sequentially directing the source energy through the sample cell, the reference cell, and through neither cell. Processing electronics similar to the single path instrument can be incorporated to compensate for background radiation and absorption band interferences.

    GAS DETECTION APPARATUS AND METHOD
    48.
    发明申请

    公开(公告)号:US20180217056A1

    公开(公告)日:2018-08-02

    申请号:US15747516

    申请日:2016-07-27

    Abstract: A detector has 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 readings corresponding to the first wavelength, the second wavelength and a reference. A first absorption figure is calculated using the first reading and the reference reading, and a second absorption figure using the second reading and the reference reading. A lineariser function is applied to 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 the first gas is present. The ratio of the first concentration figure to the second concentration figure is used to identify whether only the first gas is present.

    METHOD FOR THE LASER SPECTROSCOPY OF GASES
    50.
    发明申请
    METHOD FOR THE LASER SPECTROSCOPY OF GASES 有权
    气体激光光谱法

    公开(公告)号:US20140340684A1

    公开(公告)日:2014-11-20

    申请号:US14279369

    申请日:2014-05-16

    Applicant: Sick AG

    Abstract: A method of determining a concentration of a gas in a sample and/or the composition of a gas using a spectrometer comprises the transmitting of radiation whose wavelength substantially continuously runs through a wavelength range, wherein the continuous running through of the wavelength range is overlaid by a wavelength modulation; the measuring of an absorption signal from the absorption of the radiation by the gas as a function of the wavelength of the radiation; the converting of the absorption signal into a first and a second derivative signal; the deriving of a first measured gas concentration value from the first derivative signal and of a second measured gas concentration value from the second derivative signal; and the determining of the concentration and/or the composition of the gas from at least the first measured gas concentration value, wherein the wavelength modulation is adapted in response to a change of a state variable of the gas such that a ratio between the first measured gas concentration value and the second measured gas concentration value is kept substantially constant.

    Abstract translation: 使用光谱仪确定样品中气体浓度和/或气体组成的方法包括传输其波长基本上连续穿过波长范围的辐射,其中波长范围的连续穿过被覆盖在 波长调制; 通过气体吸收辐射的吸收信号作为辐射波长的函数的测量; 将吸收信号转换成第一和第二导数信号; 从所述一阶导数信号导出第一测量气体浓度值和从所述二阶导数信号得到第二测量气体浓度值; 以及从至少第一测量气体浓度值确定气体的浓度和/或组成,其中响应于气体的状态变量的变化而调整波长调制,使得第一测量的气体浓度值 气体浓度值和第二测量气体浓度值保持基本上恒定。

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