System for testing flow meters

Details System for testing flow meters System for testing flow meters

1973-11-01

1976-03-02

Woodiel, Donald O.

Measuring and testing

Instrument proving or calibrating

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

G01F 2500

Patent

active

039409716

ABSTRACT:
Liquid is supplied to a meter test stand at a uniform pressure, and the flow through the meters on the stand automatically is directed to each of three receptacles in sequence at three different flow rates during each test cycle. Level sensors in each receptacle actuate cycling controls and actuate sensing and recording components. The latter components monitor the rate of flow registration of the meters on test and provide an accurate comparison by percent of the measured flow rate to the actual flow rate. A high degree of accuracy is achieved through the use of a phase locked loop and digital control system which responds to the level sensing and cycling controls to provide a print-out of the comparison as a measure of accuracy of the meter at each such flow rate.

REFERENCES:
patent: 3125879 (1964-03-01), Porter, Jr.
patent: 3631709 (1972-01-01), Smith et al.
patent: 3808543 (1974-04-01), Mueller
patent: 3888106 (1975-06-01), Last et al.

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