Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Patent
1989-09-26
1991-12-31
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
By measuring vibrations or acoustic energy
G01F 132
Patent
active
050761056
ABSTRACT:
A flowmeter includes a vortex generating bluff body disposed across a flow passage and a vortex sensing planar member disposed downstream of the bluff body across the flow passage parallel to the bluff body and the central axis of the flow passage, wherein the trailing edge of the vortex sensing planar member is connected to a transducer secured to the flowmeter body, which vortex sensing planar member may be connected to or separated from the bluff body. The volume flow rate of fluid is determined from frequency of an alternating electromotive force generated by the transducer and representing an alternating fluid dynamic force experienced by the vortex sensing planar member, and the mass flow rate is determined from a combination of the frequency and amplitude of the alternating electromotive force.
REFERENCES:
patent: 2809520 (1957-10-01), Richard, Jr.
patent: 3683691 (1972-08-01), Kivenson
patent: 3698245 (1972-10-01), McNabb
patent: 3720104 (1973-03-01), Zanker
patent: 4069708 (1978-01-01), Fussell, Jr.
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