Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Patent
1982-05-05
1984-04-10
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
By measuring vibrations or acoustic energy
G01F 132
Patent
active
044413726
ABSTRACT:
An elongate body extends as a bar across a fluid flow passage and has a vortex shedding tapered head portion pointing upstream and a tail portion downstream of the head. The head has an axial length equal to or less than half the head width. The tail has a width less than head width throughout its length. A sensor is arranged downstream of the head. For example, the sensor may be in the tail portion of the body such as to sense the vortices produced alternately on the side surfaces. The frequency output of the sensor is proportional to the relative speed between the elongate body and the fluid. The arrangement can be used as a fluid flowmeter or a ship's log.
REFERENCES:
patent: 3572117 (1971-03-01), Rodley
patent: 3589185 (1971-06-01), Burgess
patent: 3867839 (1975-02-01), Herzl
patent: 3972232 (1976-08-01), Miller et al.
patent: 4285247 (1981-08-01), Klobe
Goldstein Herbert
IT&T Industries, Inc.
Kristofferson T. E.
Stolzy A. D.
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