Research on the traceability verification technology of quantity value of standard water flow facility based on mobile comparison method

Yumin ZHAO, Xu WANG, Liang PENG, Tianyu WANG

Abstract

Standard water flow facility (hereinafter referred to as the standard facility) is used for the calibration of cold and hot water flow meters. According to JJF1001-2011 “General Metrology Terms and Definitions” the standard facility needs to be verified that the quantity value stays in the original status in order to ensure the quantity value can meet the requirements during operation. And the verification will help to identify the inaccuracy, to shorten the traceability time after that, and to minimize the test costs and quality risk as far as possible.This project studies a technical method for verifying the traceability of quantity value of standard water flow facility based on mobile comparison method. According to JJG 164-2000 "Standard facilities for Liquid Flowrate”, the total uncertainty of the standard facility for cold and hot water flowrate is determined by calibrating the timer, commutator, scale, calibrated measuring volumetric tank, etc. and the traceability of the quantity value of the facility is completed. The core of this study is how to verify the overall impact of the facility in use due to piping system, hydraulic stability, gas tightness, flow fluctuations, etc. on its reproducible quantity values.

Keywords

Standard water flow facility; Build a mobile measurement kits; Concept of equal accuracy transfer; Two electromagnetic flowmeters connected in parallel; Implementation of measurement comparisons

Download

IMEKO-TC9-2019-042.pdf

DOI

10.21014/tc9-2022.042

IMEKO TC

TC9 - Flow Measurement

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