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    • 2. 发明授权
    • Float detection system
    • 浮标检测系统
    • US4501972A
    • 1985-02-26
    • US353166
    • 1982-03-01
    • Charles E. Foerster, Jr.Robert E. MillerAldren M. Pace
    • Charles E. Foerster, Jr.Robert E. MillerAldren M. Pace
    • G01F1/24G01F25/00G01N15/06
    • G01F25/0007G01F1/24
    • The specification discloses a method and apparatus for detecting the position of the float in a glass tube flow meter, and determining the distance of said float from a reference line on the glass tube flow meter which is being calibrated. The blockage of an infrared light beam being sent from a transmitter to dual photo receivers, coupled to an optical conditioner circuit, provides an indication of whether float is high, low or in-band in relationship to the desired position, while a float follower, which is movable along the length of the flow tube by a stepper motor which is connected to a pulse encoder, provides through an optical conditioner circuit, an indication of the float position with regard to the reference line on the glass tube. The circuitry also provides for the automatic tracking of the float as its position is changed by the operator.
    • 本说明书公开了一种用于检测玻璃管流量计中浮子位置的方法和装置,并且确定所述浮子与待校准的玻璃管流量计上的参考线的距离。 耦合到光学调节器电路的从发送器发送到双光接收器的红外光束的阻塞提供浮动是否与期望位置相关的高,低或带内的指示,而浮动跟随器, 其可以通过连接到脉冲编码器的步进电机沿着流管的长度移动,通过光学调节器电路提供关于玻璃管上的参考线的浮动位置的指示。 该电路还提供了浮动的自动跟踪,因为它的位置被操作者改变。