发明名称 |
Sensors for detection of fluid condition, and control systems utilizing their signals |
摘要 |
A sensor utilizes the opposition of a fluid to physical displacement to provide information about the fluid itself, such as its quality as measured by its density or viscosity, or about the state of a fluid system which contains it, such as the fluid pressure existing at some point in the system. The sensor includes a fluid displacement device or element physically adapted to displace the fluid and repetitively urged into displacement by the application of a known impetus or urging force. The resulting motion of the element is then analyzed to obtain the information desired. The fluid displacement element may additionally perform a pumping function, or it may operate in a fluid stream externally powered. When employed as a pump, the sensor may provide information on the fluid pumped or on the state of the fluid system.
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申请公布号 |
US4496287(A) |
申请公布日期 |
1985.01.29 |
申请号 |
US19820387417 |
申请日期 |
1982.06.11 |
申请人 |
NELSON, ROBERT M. |
发明人 |
NELSON, ROBERT M.;NELSON, ROBERT E. |
分类号 |
F04B17/04;F04B43/02;H02K33/10;(IPC1-7):F04B21/00;G01N7/00 |
主分类号 |
F04B17/04 |
代理机构 |
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代理人 |
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地址 |
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