发明名称 |
Device and method for the status monitoring of a pressure measuring unit |
摘要 |
The invention relates to a device and a method for the status monitoring of a pressure measuring unit in an absolute or differential or relative pressure transducer, a pressure-sensitive element installed in the pressure measuring unit being impinged with at least one pressure generated by at least one membrane. During a defined diagnosis time interval, a testing element integrated in the pressure measuring unit is induced to undergo a change in volume, preferably by electrical activation. The pressure difference caused as a result in the pressure measuring unit is registered by a pressure-sensitive element. The curve registered during a diagnosis time interval is compared with a reference curve recorded with the pressure measuring unit intact. A fault indication is given if the deviations between the registered curve and the reference curve exceed predetermined tolerance values.
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申请公布号 |
US7284437(B2) |
申请公布日期 |
2007.10.23 |
申请号 |
US20050103439 |
申请日期 |
2005.04.12 |
申请人 |
ABB RESEARCH LTD |
发明人 |
KRIPPNER PETER;SCHOLZ WOLFGANG;RIEGLER PETER;ALTIOK EMRULLAH;BISKUP JUERGEN;DAAKE WILHELM;MILANOVIC RAIKO;MERTE ROLF;GASCH ARMIN;LORITO FABRIZIO;MORONI ANDREA;VECCHIATO FRANCO;BIANCHI CORRADO;VOLONTERIO EUGENIO |
分类号 |
G01L13/02;G01L7/00;G01L7/08;G01L27/00 |
主分类号 |
G01L13/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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