发明名称 |
LINE PRESSURE MEASUREMENT USING DIFFERENTIAL PRESSURE SENSOR |
摘要 |
A pressure sensor assembly for sensing a pressure of a process fluid includes a sensor body having a cavity formed therein to couple to a process fluid pressure. A deflectable diaphragm in the cavity deflects in response to the first and second process fluid pressures. A first primary electrode couples to a wall of the cavity and forms a first primary capacitor between the first primary electrode and the deflectable diaphragm. A first secondary electrode couples to the wall of the cavity to form a first secondary capacitor between the first secondary electrode and the deflectable diaphragm. A second primary electrode and second secondary electrode are preferably coupled to a wall of the cavity opposite the first. Line pressure of the process fluid is determined based upon variation in the secondary capacitors relative to the primary capacitors. |
申请公布号 |
EP1883797(B1) |
申请公布日期 |
2012.08.08 |
申请号 |
EP20060771177 |
申请日期 |
2006.05.25 |
申请人 |
ROSEMOUNT, INC. |
发明人 |
HARASYN, DONALD, E.;WILLCOX, CHARLES, R. |
分类号 |
G01L13/02;G01L9/12 |
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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