发明名称 |
PRESSURE-BASED DIAGNOSTIC SYSTEM FOR PROCESS TRANSMITTER |
摘要 |
A process transmitter for measuring a process variable in an industrial process comprises a gauge pressure sensor, an excitation source and transmitter circuitry. The gauge pressure sensor measures a pressure difference between a process fluid and a reference volume, and generates a pressure sensor signal representing the pressure difference. The excitation source generates a pressure pulse within the reference volume to influence generation of the pressure sensor signal. The transmitter circuitry is connected to the gauge pressure sensor to provide an output related to a change in the pressure sensor signal due to the pressure pulse. |
申请公布号 |
WO2010042233(A3) |
申请公布日期 |
2010.07.22 |
申请号 |
WO2009US06007 |
申请日期 |
2009.11.06 |
申请人 |
ROSEMOUNT INC.;HEDTKE, ROBERT, C. |
发明人 |
HEDTKE, ROBERT, C. |
分类号 |
G01L7/08;G01L7/02;G06F11/00 |
主分类号 |
G01L7/08 |
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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