Monitoring pressure interference in gas analyzers
    1.
    发明授权
    Monitoring pressure interference in gas analyzers 失效
    监测气体分析仪中的压力干扰

    公开(公告)号:US5088313A

    公开(公告)日:1992-02-18

    申请号:US443259

    申请日:1989-11-29

    IPC分类号: G01N33/00

    CPC分类号: G01N33/0016

    摘要: Apparatus for monitoring and correcting gas analyzers having a measuring chamber with an inlet and an outlet, and a pump for supplying a pressurized measuring gas, further includes a flow throttle for providing flow resistance and being connected to the outlet of the analyzer to obtain a gas pressure in the chamber above a level downstream from the throttle; a pressure transducer is connected to measuring gas pressure of the measuring gas upstream from the throttle but downstream from the pump, preferably also upstream from the analyzer; an output signal from the transducer is used for correcting errors of the measuring signal of the gas analyzer caused by variations of gas pressure in the measuring chamber on account of variations in the gas pressure, for using the same output signal to extract a rate of flow indication as to the measuring gas and for ascertaining that the flow remains within specified limits.

    摘要翻译: 用于监测和校正具有具有入口和出口的测量室的气体分析器和用于供应加压测量气体的泵的装置还包括用于提供流动阻力并连接到分析器的出口以获得气体的流量节流阀 在油门下游的水平面上方的压力; 压力传感器连接到测量气体压力,从节气门上游到泵的下游,优选地也在分析器的上游; 来自换能器的输出信号用于校正气体分析器由于气体压力变化引起的气体压力变化引起的测量信号的误差,因为使用相同的输出信号来提取流量 关于测量气体的指示,并确定流量保持在规定的限度内。

    Calibration of nondispersive infrared photometer
    2.
    发明授权
    Calibration of nondispersive infrared photometer 失效
    非分光红外光度计校准

    公开(公告)号:US5003175A

    公开(公告)日:1991-03-26

    申请号:US359510

    申请日:1989-06-01

    IPC分类号: G01N21/61 G01N21/37

    摘要: The photometer is calibrated by using a permanently built-in installation of four, similarly configured chambers in a good heat conducting carrier which is slidably interposed between sample and reference chambers on one hand and the detection structure on the other hand. One pair of these chambers is placed in the paths during measurement and is filled with inert gas, the other pair has one chamber filled with calibration gas, the other one with inert gas. All chambers are closed with similar windows.

    摘要翻译: 通过使用永久内置的四个相同配置的室,在一个良好的导热载体中,一方面可滑动地插入在样品室和参考室之间以及另一方面检测结构来校准光度计。 一对这些室在测量期间放置在路径中,并且填充有惰性气体,另一对具有填充有校准气体的一个室,另一个室具有惰性气体。 所有的房间都有类似的窗户关闭。