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Title: Liquid Prover Calibration
Author: Carl Green, Jr.
Source: 1979 International School of Hydrocarbon Measurement
Year Published: 1979
Abstract: Fluid measurement is normally 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 standard for verifying meter throughput is to check it against a known-volume. This known-volume 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 means of proving is the Mechanical Displacement Prover. A prover allows proving a meter under 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 anothe

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