Influence of Verification Volume and Flow rate on Verification Facility for Water Meters of Piston

Jun Ma, Yejun Chen

Abstract

According to the JJG 1113-2015 “Verification Facility for Water Meters” calibration regulations, when testing the verification facility for water meters of Piston, the indication error and repeatability of the main standard implement are determined by two parameters, namely the verification volume and flow rate. Experiments show that the setting of two parameters affects the verification results, when the flow rate is set to 25 L/h and the verification volume is 2 L, the indication error and repeatability of the main standard implement meet the requirements of the verification regulation; while when the flow rate increases to 50 L/h, or even larger, the test results do not meet the requirements, i.e. the test results produce a misjudgment of the piston cylinder's metering performance. The main purpose of this paper is to verify the influence of the verification volume and flow rate settings on the piston cylinder's indication error and repeatability through testing.

Keywords

Verification Facility for Water Meters of Piston; Verification volume; Flow rate; Indication error; Repeatability

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IMEKO-TC9-2019-074.pdf

DOI

10.21014/tc9-2022.074

IMEKO TC

TC9 - Flow Measurement

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