Mass flowmeter

Details Mass flowmeter Mass flowmeter

1985-05-29

1986-12-23

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

G01F 132

Patent

active

046304843

ABSTRACT:
A mass flowmeter has a vortex generator for shedding a Karman vortex street downstream of the vortex generator positioned inside a duct for guiding a fluid. The vortex generator comprises a stationary member and a movable member which is displaceable in relation to the stationary member. The movable member is displaced by the expanding or contracting of bellows in response to changes in pressure and temperature of the fluid to thereby vary the characteristic dimension of the vortex generator. The Karman vortex shedding frequency of the vortex generator is measured by a heat-wire type sensor.

REFERENCES:
patent: 3937195 (1976-02-01), Woods
patent: 4116060 (1978-09-01), Frederick
patent: 4280360 (1981-07-01), Kobayashi et al.
patent: 4297894 (1981-11-01), Nagaishi et al.
patent: 4437349 (1984-03-01), Joy

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