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    Circuit arrangement for the power supply of a two-wire sensor
    1.
    发明授权
    Circuit arrangement for the power supply of a two-wire sensor 失效
    两线传感器电源的电路布置

    公开(公告)号：US06897639B2

    公开(公告)日：2005-05-24

    申请号：US10218629

    申请日：2002-08-15

    申请人： Ralf Koernle ,  Albert Woehrle ,  Juergen Motzer

    发明人： Ralf Koernle ,  Albert Woehrle ,  Juergen Motzer

    IPC分类号： G05F3/18 ,  H02H9/00 ,  G05F1/573

    CPC分类号： G05F3/18 ,  H02H9/008 ,  Y10S323/908

    摘要： A two-wire sensor (6) is attached to one pole of a voltage distribution source (U) by an initial connecting line (V1) in which a current-limiting resistor (R1) is positioned and is attached to the other pole by a second connecting line (V2). Parallel to the series connection consisting of the two-wire sensor (S) and the current-limiting resistor (R1) is at least one limiting diode (D1). A current regulator (SR) which is attached to the poles of the power source (U) regulates a parallel current (I) which runs parallel to the current through the two-wire sensor (D), so that there is a sum current at the poles of the power source (U) that always corresponds to the measured value delivered by the two-wire sensor (S). The regulating inputs of the current regulator (SR) are connected to the terminals of a current-sensing resistor (R2) positioned in a connecting line (V1). When a HART®-interface is used with the two-wire sensor (S) a HART®-resistor (RH) is positioned in one of the two connecting lines (V1).

    摘要翻译： 两线传感器（6）通过初始连接线（V 1）连接在电压分配源（U）的一极上，其中限流电阻器（R 1）被定位并连接到另一极 通过第二连接线（V 2）。 与由双线传感器（S）和限流电阻（R 1）组成的串联连接是至少一个限制二极管（D1）。 连接到电源（U）的极的电流调节器（SR）调节与通过双线传感器（D）的电流平行的平行电流（I），使得在 电源（U）的极点总是对应于由双线传感器（S）传送的测量值。 电流调节器（SR）的调节输入连接到位于连接线（V 1）中的电流检测电阻（R 2）的端子。 当两线传感器（S）使用HART（R）接口时，HART（R） - 电阻（RH）位于两条连接线（V 1）中的一条中。

    Circuit Arrangement with Explosion Protection
    2.
    发明申请
    Circuit Arrangement with Explosion Protection 审中-公开
    电路布置与防爆

    公开(公告)号：US20070153442A1

    公开(公告)日：2007-07-05

    申请号：US11613416

    申请日：2006-12-20

    申请人： Klaus Guenter ,  Albert Woehrle

    发明人： Klaus Guenter ,  Albert Woehrle

    IPC分类号： H02H3/08

    CPC分类号： H02H9/008 ,  G05B2219/34481

    摘要： A circuit arrangement for a field device includes an input, an output and a current-limiting element. The circuit arrangement is designed to transmit a useful signal along a useful-signal path from the input to the output. The input and the output are galvanically separated from each other. The current-limiting element is arranged outside the useful-signal path.

    摘要翻译： 用于现场设备的电路装置包括输入，输出和限流元件。 电路装置被设计成沿着从输入到输出的有用信号路径传输有用信号。 输入和输出彼此电流分离。 限流元件布置在有用信号路径的外部。