Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Patent
1993-09-09
1994-09-20
Chilcot, Jr., Richard E.
Measuring and testing
Volume or rate of flow
By measuring vibrations or acoustic energy
7386124, G01F 132
Patent
active
053478738
ABSTRACT:
A vortex flowmeter includes a body having a flow passage, a vortex generator that generates a standing transverse wave in the flow passage, and first wing and second wings in the passage downstream of the generator. A circuit that utilizes sensors in the two wings is provided for first determining an operational phase difference, .DELTA..phi..sub.m between the signals representing movement of the first and second wings. A microprocessor then determines a corrected vortex frequency, .sup.f corr, in response to a ratio of a predetermined calibration phase difference .DELTA..phi..sub.c to the measured phase difference .DELTA..phi..sub.m.
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Badger Meter Inc.
Chilcot Jr. Richard E.
Oen William L.
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