发明名称 |
Pressure sensor cavity etched with hot POCL3 gas |
摘要 |
A transmitter in a process control system transmits a pressure over a process control loop. The transmitter includes I/O circuitry, compensation circuitry and an absolute pressure sensor. The I/O circuitry transmits information over the process control loop. Compensation circuitry receives a pressure related signal and responsively controls the I/O circuitry to transmit pressure information on the loop. The absolute pressure sensor includes a cavity which deforms as the sensor deflects in response to an applied pressure. A sensor in the cavity provides the pressure related signal to the compensation circuitry in response to the deformation.
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申请公布号 |
US6082199(A) |
申请公布日期 |
2000.07.04 |
申请号 |
US19990277249 |
申请日期 |
1999.03.26 |
申请人 |
ROSEMOUNT INC. |
发明人 |
FRICK, ROGER L.;LOUWAGIE, BENNETT L.;TOY, ADRIAN C. |
分类号 |
G01L9/00;G01L9/12;G01L13/06;(IPC1-7):G01L9/12 |
主分类号 |
G01L9/00 |
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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