Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Patent
1983-09-23
1985-12-24
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
By measuring vibrations or acoustic energy
73723, 73754, 73DIG4, 310338, G01F 132, G01L 708, G01L 908
Patent
active
045598320
ABSTRACT:
A piezoelectric fluid pressure fluctuation frequency sensor, preferably for a vortex-shedding flowmeter. A piezoelectric transducer is located in a sensor chamber between and in physical contact with a diaphragm and a chamber surface. Pressure fluctuations in a von Karman vortex street outside the diaphragm compress the transducer, between the diaphragm and the chamber surface. The transducer generates a responsive electrical signal which is representative of the pressure fluctuations.
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Publication of Vernitron Piezoelectric Division.
Burlage Brian J.
Lenz Gary A.
Wiklund David E.
Fisher Controls Company, Inc.
Goldstein Herbert
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