Low cost main stream gas analyzer system
    7.
    发明授权
    Low cost main stream gas analyzer system 失效
    低成本主流气体分析仪系统

    公开(公告)号:US06534769B1

    公开(公告)日:2003-03-18

    申请号:US09477914

    申请日:1999-12-31

    Inventor: James E. Graham

    CPC classification number: A61B5/097 A61B5/0836

    Abstract: A gas stream monitoring system including a low cost main stream gas analyzer system is disclosed herein. The low cost main stream gas analyzer system is calibrated by a side stream gas analyzer system included in the gas stream monitoring system. Once calibrated, the side stream system is placed into standby mode such that diversions of portions of the gas stream can be minimized. The calibrated output signals from the low cost main stream system contain corrections for gas interference, pressure change, temperature change, manufacturing tolerance, component flaws, and any other sources of error.

    Abstract translation: 本文公开了一种包括低成本主流气体分析仪系统的气流监测系统。 低成本主流气体分析仪系统由包括在气流监测系统中的侧流气体分析仪系统进行校准。 一旦校准,侧流系统被置于待机模式,使得气流的部分的转移可以被最小化。 来自低成本主流系统的校准输出信号包含气体干扰,压力变化,温度变化,制造公差,部件缺陷和任何其他误差源的校正。

    Optical stabilization of temperature effects on an infrared gas analyzer
    8.
    发明授权
    Optical stabilization of temperature effects on an infrared gas analyzer 失效
    对红外线气体分析仪的温度影响进行光学稳定

    公开(公告)号:US06359278B1

    公开(公告)日:2002-03-19

    申请号:US09474496

    申请日:1999-12-29

    Inventor: James E. Graham

    CPC classification number: G01N21/3504 G01N21/3518

    Abstract: A method of stabilizing temperature effects on a gas analyzer includes transmitting infrared energy through a plurality of cells in a reference cell drum to a sensor in the gas analyzer. The plurality of cells include at least one cell containing a reference gas and at least one cell containing an air reference. The method also includes interposing a filter in at least one of the plurality of cells in the reference cell drum, wherein energy from the infrared beam is reduced. The method further includes rotating the reference cell drum such that the infrared energy fully passes through each of the plurality of cells for a limited period of time such that the sensor generates a substantial sine wave signal.

    Abstract translation: 稳定气体分析仪温度影响的方法包括将红细胞能量通过参考电池鼓中的多个电池传输到气体分析仪中的传感器。 多个细胞包括至少一个含有参考气体的细胞和至少一个包含空气参考的细胞。 该方法还包括在参考单元鼓中的多个单元中的至少一个单元中插入滤波器,其中来自红外光束的能量减小。 该方法还包括旋转参考单元鼓,使得红外能量在有限的时间周期内完全通过多个单元中的每一个,使得传感器产生大量的正弦波信号。

    Infrared gas analyzer and method
    9.
    发明授权
    Infrared gas analyzer and method 失效
    红外气体分析仪及方法

    公开(公告)号:US5585635A

    公开(公告)日:1996-12-17

    申请号:US312114

    申请日:1994-09-26

    Inventor: James E. Graham

    CPC classification number: G01N21/3504

    Abstract: An infrared gas analyzer and method employing one optical path which includes one infrared source, one sample cell containing the gas(es) to be analyzed, one infrared sensor and one infrared filter no matter how many gases are to be analyzed. The one optical path with one filter is utilized for both determining infrared source output and infrared absorption by the gas(es) to be measured.

    Abstract translation: 一种使用一个光路的红外线气体分析器和方法,其包括一个红外源,一个含有待分析气体的样品池,一个红外传感器和一个红外滤光器,无论要分析多少气体。 具有一个滤光器的一个光路用于确定红外源输出和被测量气体的红外吸收。

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