Measuring and testing – Volume or rate of flow – Using differential pressure
Patent
1987-05-19
1989-01-24
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
Using differential pressure
73215, G01F 144
Patent
active
047993880
ABSTRACT:
The gravity flow of a liquid in an open pipe is metered during open channel flow, during surcharged flow, and during the transition between the two. A tubular venturi metering device is employed, and when during open channel flow, the liquid depth rises in the section of the pipe upstream from the device, the throat of the device fills with liquid substantially simultaneously with the upstream section of the pipe, so that during the transition, the device continues to provide a flow determination.
REFERENCES:
patent: 2283906 (1942-05-01), Bennett
patent: 3427878 (1969-02-01), Gerlitz, Jr. et al.
patent: 3719081 (1973-03-01), Lynn et al.
patent: 4095466 (1978-06-01), Schontzler et al.
BIF Industries Technical Bulletin 110-P1, 8/58, p. 17.
Wenzel, "Meter for Sewer Measurements", in Journal of Hydraulic Div., 1/75, pp. 115-131.
Duffy Christopher
Goldstein Herbert
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