Experimental Investigation on Zero Drift Effect in Coriolis Mass Flowmeters

Li-Jun Wang, Liang Hu, Xin Fu, Peng Ye

Abstract

It is claimed that Coriolis mass flowmeter (CMF) can accurately measure the mass flow-rate without being effected by temperature. However, evidences from practical industry applications show that sometimes CMFs still suffer so-called "zero drift (ZD) effect": the origin of the flowmeter (reading at zero flow) varies as temperature changing. In this paper, series of experiments are carried out to systematically examine and analyze the performance of a Narrowed-U-CMF in a temp- changing environment. Based on the results of these experiments, possible reasons causing the ZD effect are analyzed, which provides a base for further solutions of the ZD effect.

Keywords

Coriolis Mass Flowmeter, Zero drift effect

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IMEKO-TC9-2010-076.pdf

DOI

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IMEKO TC

TC9 - Flow Measurement

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