Diagnostic in Bidirectional Prover - An Innovative Approach

摘要

This article described an approach to derive potential diagnostic information using multiple meter factors. Using this diagnostic information, the user can isolate and identify the potential cause that may lead to unsatisfactory proving operation. Considering the criticality of proving systems, a prover recalibration is performed to obtain a new base prove volume after repair/replacement of detector switches. The prover recalibration process is complex and time consuming. Also, during the period of prover recalibration, flow meters in operation cannot be proved, resulting in less confidence in transferred volume. Using method described in this paper, it is possible to derive actionable information related to a change in the base Prover Volume by using simplistic Eq-1. The new calculated Base Prover Volume is statistically accurate, facilitating possible avoidance of costly prover recalibration and the associated operation down time. Disclaimer: The suggestions and guidelines provided in this article should be considered general in nature. Readers are encouraged to refer to relevant codes and standards by legal metrology and other institutes.