Piezoelectric pressure frequency sensor

Details Piezoelectric pressure frequency sensor Piezoelectric pressure frequency sensor

G - Physics

01

L

73/125, 73/3, 73

G01L 7/08 (2006.01) G01L 9/08 (2006.01)

Patent

CA 1223452

PIEZOELECTRIC PRESSURE FREQUENCY SENSOR 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 pres- sure fluctuations.

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