Liquid flow meter

Details Liquid flow meter Liquid flow meter

1987-01-23

1988-05-31

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Expansible chamber

G01F 1104

Patent

active

047473070

ABSTRACT:
A positive displacement liquid flow meter uses two variable volume chambers 16,18 arranged in parallel, each with a reciprocable piston 24,26. While liquid from one chamber is being fed to the outlet 11, the other chamber is being charged with the liquid from the inlet 10. A sensing piston 32 in the outlet line 11 indicates when flow variation occurs and allows a feed back signal to be produced to produce the necessary alteration in movement of the piston from the chamber which is feeding the outlet line. Valves A, B, C, D are provided on either side of each chamber, so that when a chamber is feeding it is isolated from the liquid supply.

REFERENCES:
patent: 4192185 (1980-03-01), Keilholz
patent: 4195752 (1980-04-01), Heimgartner
patent: 4331033 (1982-05-01), Emerson
patent: 4356727 (1982-11-01), Brown et al.
Instrumentation, Measuring & Testing-p. 12 Week D29 SU-767-528.

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