Valve position monitor and control system

Details Valve position monitor and control system Valve position monitor and control system

F - Mech Eng,Light,Heat,Weapons

16

K

341/107

F16K 31/02 (2006.01) G05D 3/00 (2006.01)

Patent

CA 1154519

VALVE POSITION MONITOR AND CONTROL SYSTEM ABSTRACT OF THE DISCLOSURE A valve position monitoring and control system incorporates a proximity sensor positioned near a movable valve element to detect the operational position of the valve and includes circuit means coupled to a valve actuating solenoid for deactivating the solenoid in the event the valve fails to respond to command signals for positioning the valve in a predetermined position. In one embodiment, the system incorporates a pair of series connected valves used in presses which valves in turn are operated by solenoid actuated pilot valves. In the event either one of the valves do not operate either by opening within a predetermined time after actuation or closing within a predetermined time after their deactuation, the system of the present invention will not permit further operation of the valves until the system has been manually reset. -1-

329729

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