发明授权
- 专利标题： Systems and methods for liquid level sensing having a differentiating output
- 专利标题（中）： 具有差分输出的液位感测系统和方法
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申请号： US12842308申请日： 2010-07-23
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公开(公告)号： US08438919B2公开(公告)日： 2013-05-14
- 发明人: Richard W. Phillips , Chansay Em
- 申请人： Richard W. Phillips , Chansay Em
- 申请人地址： US MN Burnsville
- 专利权人： Rosemount Aerospace Inc.
- 当前专利权人： Rosemount Aerospace Inc.
- 当前专利权人地址： US MN Burnsville
- 代理机构： Edwards Wildman Palmer LLP
- 代理商 Scott D. Wofsy; Joshua L. Jones
- 主分类号： G01F23/00
- IPC分类号： G01F23/00
摘要：
A liquid level sensing system including a housing configured to hold a liquid, a first temperature sensor connected to the housing and configured to output a first signal representing a first temperature measured at the first temperature sensor, a second temperature sensor connected to the housing and configured to output a second signal representing a second temperature measured at the second temperature sensor, and a circuit configured to receive the first and second signals as input and to provide an output signal proportional to the time rate of change of the difference between the first signal and the second signal.
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