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Title: Electronic Transfer Prover
Author: Rick Ensch
Source: American Gas Association 1991
Year Published: 1991
Abstract: The escalating cost of natural gas, and greater emphasis on accurate measurement by gas companies has enhanced the need for better methods of field testing meters. There are presently three methods for field testing meters. 1. Low Pressure Flow Prover 2. Critical Flow Prover 3. Transfer Prover The low pressure flow prover and the critical flow prover involve the measurement of several variables which in turn may cause the compounding of errors before the final accuracy can be calculated. The transfer prover requires only the input of temperature and pressure differences between the prover and the meter under test. Resuhs obtained from a transfer prover should be more accurate and repeatable and compare more favorably to the accepted standards of the bell and piston provers. Transfer proving was initially developed to provide an easier and more accurate field meter proving method. Because of the capacity capabilities of transfer provers (2000 CFH to 80,000 CFH) transfer provers are utilized in meter shops where prover capacity is limited and allow for shop testing of the larger capacity meters.

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