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    FIELD DEVICE WITH SELF-TESTING OF A PIEZOELECTRIC TRANSDUCER
    1.
    发明公开
    FIELD DEVICE WITH SELF-TESTING OF A PIEZOELECTRIC TRANSDUCER 审中-公开
    FELDVORRICHTUNG MITSELBSTPRÜFUNGEINES PIEZOELEKTRISCHEN WANDLERS

    公开(公告)号：EP2805142A1

    公开(公告)日：2014-11-26

    申请号：EP12729722.4

    申请日：2012-05-28

    申请人： Rosemount Inc.

    发明人： ARUNACHALAM, Jawahar ,  KASTURI, Udayashankar Bangalore

    IPC分类号： G01L27/00 ,  G01D3/08 ,  G01D21/00

    CPC分类号： G01R31/021 ,  G01D3/08 ,  G01L27/007

    摘要： An industrial process field device having a piezoelectric transducer performs self-testing of the condition of the piezoelectric transducer during a self-test mode. A charging current is supplied to the piezoelectric transducer, and voltage on the piezoelectric transducer as a result of the charging current is monitored. A diagnostic test result indicating condition of the piezoelectric transducer is produced based on the magnitude of the voltage.

    摘要翻译： 具有压电换能器的工业过程现场设备在自检模式期间对压电换能器的状态进行自我测试。 向压电换能器提供充电电流，并且监视作为充电电流的结果的压电换能器上的电压。 基于电压的大小产生表示压电换能器的状态的诊断测试结果。