Uni-directional meter prover apparatus

Details Uni-directional meter prover apparatus Uni-directional meter prover apparatus

1974-06-17

1976-05-11

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

039553990

ABSTRACT:
The present invention relates to an improved uni-directional meter prover apparatus which includes a prover barrel having first and second ends, a piston disposed within the barrel which is propelled through the barrel by the flow of liquid therethrough, means for detecting the passage of the piston and comparing the volume of liquid displaced thereby with the volume of liquid measured by a meter being proved and means for transferring the piston from the second end of the prover barrel to the first end thereof. By the present invention, the first end of the prover barrel is positioned below the second end thereof and a piston transfer conduit is connected between the first and second ends of the prover barrel. First and second valve means are disposed within the transfer conduit for preventing liquid communication between the first and second ends of the prover barrel and for selectively retaining the piston therein. Means for selectively opening and closing the first and second valve means are provided so that the piston is caused to flow through the prover barrel from the first end to the second end thereof and then is transferred by gravity movement through the transfer conduit back to the first end of the prover barrel.

REFERENCES:
patent: 3504523 (1970-04-01), Layhe
patent: 3738153 (1973-06-01), Simmons

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