Valve position sensing circuit

Details Valve position sensing circuit Valve position sensing circuit

G - Physics

05

D

G05D 3/00 (2006.01) F02C 9/26 (2006.01) F16K 37/00 (2006.01) G05B 9/02 (2006.01) H02H 5/00 (2006.01)

Patent

CA 2053042

The present invention provides a method and corresponding apparatus for detecting open and short circuit faults in a valve position sensor. According to one aspect of the invention, a fuel or steam valve (2) in a turbine system is automatically opened and closed by a positioner/sensor combination (1, 36, 32). In the event a fault occurs in the position sensing circuitry, a fault signal is immediately produced which allows appropriate action to be taken, e.g., closing the valve, before the turbine is damaged.

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