G - Physics – 01 – F
Patent
G - Physics
01
F
340/124, 340/143
G01F 1/68 (2006.01) F01D 25/00 (2006.01) F16T 1/48 (2006.01) G01F 1/684 (2006.01) G01M 3/00 (2006.01) G05B 23/02 (2006.01)
Patent
CA 1317652
ABSTRACT OF THE DISCLOSURE 54,059 A flow sensor includes a strap-on heater attached to a fluid conduit downstream of a drain valve and two differential temperature measuring thermocouples attached to the fluid conduit downstream of the heater. A monitoring system employing at least one of the flow sensors further includes a controller which receives the differential temperature signal produced by the two thermocouples, a signal indicative of a selected valve position, and a signal indicative of steam turbine operating condition, i.e., hot or cold. The controller includes a logic circuit for correlating the differential temperature value signal, the valve position signal and the steam turbine condition signal to a diagnosis of the drain valve condition.
597773
Bereskin & Parr
Westinghouse Electric Corporation
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