发明公开
EP2805142A1 FIELD DEVICE WITH SELF-TESTING OF A PIEZOELECTRIC TRANSDUCER
审中-公开
FELDVORRICHTUNG MITSELBSTPRÜFUNGEINES PIEZOELEKTRISCHEN WANDLERS
- 专利标题： FIELD DEVICE WITH SELF-TESTING OF A PIEZOELECTRIC TRANSDUCER
- 专利标题（中）： FELDVORRICHTUNG MITSELBSTPRÜFUNGEINES PIEZOELEKTRISCHEN WANDLERS
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申请号： EP12729722.4申请日： 2012-05-28
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公开(公告)号： EP2805142A1公开(公告)日： 2014-11-26
- 发明人: ARUNACHALAM, Jawahar , KASTURI, Udayashankar Bangalore
- 申请人： Rosemount Inc.
- 申请人地址： 8000 Norman Center Drive, Suite 1200 Bloomington, Minnesota 55437 US
- 专利权人： Rosemount Inc.
- 当前专利权人： Rosemount Inc.
- 当前专利权人地址： 8000 Norman Center Drive, Suite 1200 Bloomington, Minnesota 55437 US
- 代理机构： Bohnenberger, Johannes
- 优先权： INDE01752012 20120120
- 国际公布： WO2013108086 20130725
- 主分类号： G01L27/00
- IPC分类号： G01L27/00 ; G01D3/08 ; G01D21/00
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.
公开/授权文献
- EP2805142B1 FIELD DEVICE WITH SELF-TESTING OF A PIEZOELECTRIC TRANSDUCER 公开/授权日：2019-02-06
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