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    PROTECTIVE ELECTRODE FOR A PIEZOCERAMIC SENSOR
    1.
    发明申请
    PROTECTIVE ELECTRODE FOR A PIEZOCERAMIC SENSOR 审中-公开

    公开(公告)号：US20170363488A1

    公开(公告)日：2017-12-21

    申请号：US15501744

    申请日：2015-08-04

    申请人： CeramTec GmbH

    发明人： Hans-Jürgen SCHREINER

    IPC分类号： G01L1/16 ,  H01L41/047 ,  H01L41/04 ,  H01L41/113 ,  G01P15/09

    CPC分类号： G01L1/16 ,  G01P15/09 ,  H01L41/042 ,  H01L41/047 ,  H01L41/1132

    摘要： The invention relates to a piezoceramic sensor in a housing having a layer (3), preferably a PZT layer, made of a piezoelectric material, on both sides of which there is a respective sensor electrode (2), both sensor electrodes (2) being connected in each case to a pole (5, 6). In order that no potential difference, which would allow for the charge to be dissipated by way of the surface, is formed between the housing and the sensor electrodes (2), it is proposed according to the invention that the layer (3) protrudes beyond the sensor electrode (2) on at least one side of the layer (3), and a protective electrode (1) which encompasses the sensor electrode (2) at an insulating distance (7) is arranged on that part of the layer (3) which protrudes beyond the sensor electrode (2).