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Title: Liquid Prover Calibration
Author: Carl Green, Jr.
Source: 1978 International School of Hydrocarbon Measurement
Year Published: 1978
Abstract: Fluid measurement is uutmaliy done under flowing conditions using a meter. Since a meters output can change (from debris, mechanical wear, etc.) reverification of its readout should be checked periodically against an accepted standard. The atauddid lot veillylng meter throughput is Lo check it against a known-volume. This knownvolume check of a meter is called proving and over the years many different devices have been used as provers (master meters, weigh tanks, tank gauging, etc.). The now, or soon to be, most common device for proving which offers a faster, less troublesome, less expensive, and more accurate nipans of proving ic the Mechanical Dioplace ment Prover. A prover allows proving a meter utidei actual operating conditions (flow rate, temperature, pressure, etc.) with the actual operating fluid at the time of actual operation and eliminates any question of meter performance by using some fluid to prove a meter when it is used on another.

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