Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Patent
1979-10-10
1981-07-28
Goldberg, Gerald
Measuring and testing
Volume or rate of flow
By measuring vibrations or acoustic energy
343 8, G01F 166
Patent
active
042803659
ABSTRACT:
An ultrasonic Doppler flowmeter for measuring flowing fluid by reflection of sonic waves from particles in the fluid is provided with a discriminating circuit including a comparator amplifier connected to the received signal that produces a zero-flow output from the flowmeter when the signal received by the receiving means is produced by vibration of the reflecting particles in a zero-flow condition.
REFERENCES:
patent: 2770795 (1956-11-01), Peterson
patent: 2908888 (1959-10-01), Kirkland
patent: 3443433 (1969-05-01), Liston
patent: 3554030 (1971-01-01), Peronneau
patent: 3741014 (1973-06-01), Tamura
patent: 4048853 (1977-09-01), Smith
patent: 4183245 (1980-01-01), Connery et al.
Connery James G.
DiNapoli Louis D.
Punis Giancarlo
Corr Denis E.
Goldberg Gerald
Leeds & Northrup Company
MacKay Raymond F.
Miller, Jr. William G.
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