Flow meter prover apparatus and method

Details Flow meter prover apparatus and method Flow meter prover apparatus and method

1981-03-17

1983-02-08

Swisher, S. Clement

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

G01F 2500

Patent

active

043721478

ABSTRACT:
A flow meter prover is disclosed which includes an outer fluid housing having an inlet and an outlet, a measuring conduit coaxially mounted within the outer housing and having first and second sets of fluid apertures adjacent, respectively, the upstream and downstream ends thereof, a fluid barrier mounted within the annular cavity between the outer housing and the conduit, a controllable piston mounted within the conduit, an actuating rod axially projecting from the downstream side of the piston where the free end of the rod extends through the downstream end of the outer housing, a bypass valve connected between the inlet and outlet of the outer housing, and first and second piston detection switches spaced apart along the length of the measuring conduit. There are provisions for automatically correcting for variations in the dimensions of the measuring conduit due to variations in fluid temperature. The prover also includes apparatus for continuously monitoring the integrity of the piston seals, and may be operated with equal fluid pressure on both sides of the piston.

REFERENCES:
patent: 3273375 (1966-09-01), Howe
patent: 3492856 (1970-02-01), Francisco
patent: 3777545 (1973-12-01), Grove
patent: 4152922 (1979-05-01), Francisco

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