发明授权
US07284437B2 Device and method for the status monitoring of a pressure measuring unit
失效
用于压力测量单元状态监测的装置和方法
- 专利标题： Device and method for the status monitoring of a pressure measuring unit
- 专利标题（中）： 用于压力测量单元状态监测的装置和方法
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申请号： US11103439申请日： 2005-04-12
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公开(公告)号： US07284437B2公开(公告)日： 2007-10-23
- 发明人: Peter Krippner , Wolfgang Scholz , Peter Riegler , Emrullah Altiok , Jürgen Biskup , Wilhelm Daake , Raiko Milanovic , Rolf Merte , Armin Gasch , Fabrizio Lorito , Andrea Moroni , Franco Vecchiato , Corrado Bianchi , Eugenio Volonterio
- 申请人： Peter Krippner , Wolfgang Scholz , Peter Riegler , Emrullah Altiok , Jürgen Biskup , Wilhelm Daake , Raiko Milanovic , Rolf Merte , Armin Gasch , Fabrizio Lorito , Andrea Moroni , Franco Vecchiato , Corrado Bianchi , Eugenio Volonterio
- 申请人地址： CH Zurich
- 专利权人： ABB Research Ltd
- 当前专利权人： ABB Research Ltd
- 当前专利权人地址： CH Zurich
- 代理机构： Buchanan Ingersoll & Rooney PC
- 优先权： DE102004019222 20040421
- 主分类号： G01L13/02
- IPC分类号： G01L13/02
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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