API MPMS Chapter 4.9 Part 1 (R2015)
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Manual of Petroleum Measurement Standards Chapter 4-Proving Systems, Section 9-Methods of Calibrations for Displacement and Volumetric Tank Provers, Part 1-Introduction to the Determination of the Volume of Displacement and Tank Provers, First Edition
Provers are precision devices, defined as volumetric standards, which are used to verify the accuracy of liquid volumetric meters used for custody transfer measurement. Both displacement and tank provers are used to prove a meter in order to obtain its meter factor, which is then used to correct for meter error caused by differences between the metered volume and the true volume. The base volume of a displacement or tank prover, determined by calibration, is an essential requirement in the determination of these meter factors. The accuracy of a meter factor is limited by several considerations, as shown below.
Equipment Performance
Observation Errors
Prover Volume Calibration Errors
Calculation Errors
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