发明名称 |
Method and apparatus for remote monitoring of valves and valve operators |
摘要 |
A method and apparatus for providing a previously unattainable yet desirable function of monitoring, at a remote location and/or in a remote (non-intrusive) manner, the condition of a valve operator to signal a need for more thorough inspection and for possible maintenance of the valve or valve operator; the method and apparatus including the relating of output power (motor load) of the valve operator motor to the valve operator stem load, setting up a threshold value for the power parameter based on a maximum allowable operator thrust depletion; and periodically monitoring actual power parameter values at a remote location for comparison to the threshold value.
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申请公布号 |
US4869102(A) |
申请公布日期 |
1989.09.26 |
申请号 |
US19870092648 |
申请日期 |
1987.09.03 |
申请人 |
MOVATS INCORPORATED |
发明人 |
HALE, STANLEY N.;RAK, THOMAS;ROWICKI, DUANE H.;HO, CHIN P. |
分类号 |
F16K37/00 |
主分类号 |
F16K37/00 |
代理机构 |
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代理人 |
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地址 |
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