DESIGN AND EXPERIMENTAL ANALYSIS OF TRANSFER STANDARD IN WATER FLOW COMPARISON

Tao Meng, Chi Wang, Feng Gao, Chao Xing, Liang Zhang

Abstract

The design of transfer standard is one of the most important factors of the success of comparison. 13 legal metrology laboratories participated in the recent Chinese water flow standard facility comparison. The transfer standard consisted of a velocity flowmeter transfer standard package (TSP) and a Coriolis mass flowmeter TSP were designed by the pilot laboratory. The velocity flowmeter TSP included one turbine flowmeter and one electromagnetic flowmeter which were assembled in series, and two types of flowmeter with different principle played a complementary role to ensure the reliability of the transfer standard. The mass flowmeter TSP can be tested on different calibration systems in one laboratory by special pipes designed, which supported a laboratory internal comparison. The double packages transfer standard provided a lot of wealth of information for comparison result analysis. It was also found that some participated facilities had deficiencies like bad water quality and leak of diverter. The experimental analysis of TSPs helped these laboratories to improve their facilities.

Keywords

comparison, transfer standard, water flow facility, turbine flowmeter, Coriolis mass flowmeter

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DOI

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IMEKO TC

TC9 - Flow Measurement

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