发明名称 |
Apparatus to measure differential pressure with settable pressure reference |
摘要 |
A differential pressure sensor for sensing changes in pressure at a desired location, which sensor includes a sensing portion and a reference portion to produce an output indicative of the difference therebetween, both the sensing portion and the reference portion being open to the pressure around the sensor until the sensor is located in the desired sensing location and then the reference portion is closed to capture the pressure then existing at the desired location and any pressure changes thereafter producing signals indicative of the pressure differences.
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申请公布号 |
US2003196493(A1) |
申请公布日期 |
2003.10.23 |
申请号 |
US20020128013 |
申请日期 |
2002.04.23 |
申请人 |
MALLISON EDGAR ROBERT;STRATION THOMAS GEORGE |
发明人 |
MALLISON EDGAR ROBERT;STRATION THOMAS GEORGE |
分类号 |
E21B47/06;G01F1/34;G01F1/38;G01L13/02;G01L19/02;G01L19/04;G01L19/06;(IPC1-7):G01L13/02 |
主分类号 |
E21B47/06 |
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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