Fluid opacity sensor
    2.
    发明授权
    Fluid opacity sensor 失效
    液体不透明度传感器

    公开(公告)号:US5206711A

    公开(公告)日:1993-04-27

    申请号:US535934

    申请日:1990-06-11

    Abstract: A fiber optic fluid opacity sensor includes a light source (12) transmitting light to dividing means (14) for providing a sample light signal (18) and a reference light signal (20) to dual photodetectors (26, 28). Sample and reference optical pathways (19, 21) are defined by optical fibers (18, 20) spaced apart from and axially aligned with the photodetectors (26, 28) at a predetermined distance. Signal processing means (30) takes the log ratio output of the signals from the photodetectors (26, 28) for cancelling the effect of light source drift since the same source (12) is common to both for measuring the light transmission and determining opacity therefrom. A sample probe (40) contains the photodetectors (26, 28) and the sample and reference optical pathways (19, 21). The light source (12) and the signal processing means (30) are situated outside of the probe (40) and by virtue thereof outside of the sample process line (48).

    Abstract translation: 光纤液体不透明度传感器包括将光传送到分割装置(14)的光源(12),用于向双光电检测器(26,28)提供采样光信号(18)和参考光信号(20)。 采样和参考光学路径(19,21)由在预定距离处与光电检测器(26,28)间隔开并且轴向对齐的光纤(18,20)限定。 信号处理装置(30)获取来自光电检测器(26,28)的信号的对数比输出,以消除光源漂移的影响,因为相同的源(12)对于测量光透射和确定不透明度是共同的 。 样品探针(40)包含光电检测器(26,28)和样品和参考光学通路(19,21)。 光源(12)和信号处理装置(30)位于探针(40)的外部,并且由于其位于样品处理线(48)之外。

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