Closed pressure rebalance system for measuring the rate of fluid

Details Closed pressure rebalance system for measuring the rate of fluid Closed pressure rebalance system for measuring the rate of fluid

1975-07-28

1976-11-09

Woodiel, Donald O.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

73406, 338 38, 338 42, G01L 902

Patent

active

039903109

ABSTRACT:
A closed system couples the inlet and outlet pressures generated by a centrifugal pump to a pair of flexible diaphragms which seal the flow tube in a pressure rebalance system for measuring fluid flow. The system is filled with a conducting fluid which forms certain resistance paths whose resistance varies with diaphragm position. This resistance change is used to generate signals which control the pump motor to the end that the diaphragms maintain a predetermined position and the pump head is equal to the differential pressure.

REFERENCES:
patent: 2743340 (1956-04-01), Zoltanski
patent: 2856775 (1958-10-01), Niles
patent: 2931225 (1960-04-01), Pleuger

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