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Title: Mobile Flow Proving Using A Small Volume Prover
Author: K.W. Lim And J.S. Paik
Source: 1990 International Symposium on Fluid Flow Measurement
Year Published: 1990
Abstract: The pulse interpolator, which is to increase the discrimination of the small volume prover, is affected by the charactersistics of flowmeter signals. In this study, a small volume prover of the double cylinder type was designed in order to study error sources such as pulse interpolation error expected to face in field operations. The basic volume of the prover determined by a water draw method was about 9.68xl03 m3. During proving operations of turbine meters it was found that pulse interpolation data attained by the repeated piston pass at a fixed flow rate may be treated effectively by applying a statistical method. The pulse interpolation error of most trubine meters could be limited within 0.02% at the 95% confidence level. However, in the case of bulk meters, it was not possible to achieve a similar repeatability level as turbine meters because of the different pulse characteristics. Instead indirect proving using turbine meters in conjunction with the small volume prover was attempted. Experimental results indicate that the basic volume of the small volume prover is independent of the piston speed within 0.05% of tolerance.

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