Method and apparatus for remote monitoring of valves and valve operators
 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. 
Movats Incorporated
F
F16K
inventional
Thomas Stanley N. Duane H. Chin P.
Rak Hale Rowicki Ho