Electrical-charge sensing flowmeter

Details Electrical-charge sensing flowmeter Electrical-charge sensing flowmeter

G - Physics

01

F

73/125, 73/69

G01F 1/56 (2006.01) G01F 1/32 (2006.01) G01F 1/58 (2006.01) G01F 1/64 (2006.01)

Patent

CA 1224059

Abstract: Electrical-charge sensing flowmeter An element interacting with a stream of a fluid moving through a pipe generates periodic sub-flows at a rate that varies in accordance with changes in the velocity of the moving fluid. The generation of sub- flows also modulates the electrical charges contained in and moving with the fluid thus permitting a detector which is responsive to the energy being radiated by the modulated charges to produce a sensor signal having a frequency corresponding to the generating rate of the periodically produced sub-flows. In one preferred embodiment, the element is a vortex-shedding body and the sub-flows are vortices being shed therefrom. Electrical circuitry which receives the sensor signal converts it into a flow signal representative of the velocity of the moving fluid.

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