Vortex shedding flowmeter with lever action signal amplification

Details Vortex shedding flowmeter with lever action signal amplification Vortex shedding flowmeter with lever action signal amplification

1986-10-24

1988-03-01

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

G01F 132

Patent

active

047277564

ABSTRACT:
A vortex shedding flowmeter comprising vortex generator of an elongated cylindrical shape having a cross section of a blunt geometry disposed across a first cross section of a flow passage and a vortex sensor including a wing disposed across a second cross section of the flow passage in a parallel relationship with respect to the vortex generator, wherein the wing vortex sensor is secured to the wall of the flow passage at one extremity, while the other extremity is connected to one extremity of a lever that transmits the flexing movement of the wing vortex sensor to a transducer disposed at the other extremity of the lever. The vortex shedding frequency detected by the combination of the wing vortex sensor-lever amplifier-transducer provides the information on the fluid velocity through the flow passage as the vortex shedding frequency is proportional to the fluid velocity.

REFERENCES:
patent: 4033189 (1977-07-01), Herzl et al.
patent: 4069708 (1978-01-01), Fussell, Jr.
patent: 4181020 (1980-01-01), Herzl
patent: 4307619 (1981-12-01), Herzl

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