Karman vortex flow meter

Details Karman vortex flow meter Karman vortex flow meter

1988-10-26

1990-12-11

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

With indirect temperature or density compensation

7386124, G01F 132, G01F 186

Patent

active

049761536

ABSTRACT:
In a Karman vortex flow meter, the variation of pressure caused near both sides of a Karman vortex forming unit inserted into the stream of fluid is applied to an oscillating member which is oscillating in a self-excited mode at a resonance frequency, so that the vortex frequency; i.e., the volume flow rate is detected from the modulation of the resonance frequency which is caused by variation of pressure or density attributing to the vortexes formed.

REFERENCES:
patent: 3785204 (1974-01-01), Lisi
patent: 4134297 (1979-01-01), Herzl
patent: 4169376 (1979-10-01), Herzl
patent: 4470310 (1984-09-01), Tsuruoka et al.

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