Modeling temperature effects on a Coriolis mass flowmeter

Abstract Coriolis mass flowmeters are used for many applications, including as transfer standards for proficiency testing and liquified natural gas (LNG) custody transfer. We developed a model to explain the temperature dependence of a Coriolis meter down to cryogenic temperatures. As a first step, we tested our model over the narrow temperature range of 285 K–318 K in this work. The temperature dependence predicted by the model agrees with experimental data within ±0.08%; the model uncertainty is 0.16% (95% confidence level) over the temperature range of this work. Here, basic concepts of Coriolis flowmeters will be presented, and correction coefficients will be proposed that are valid down to 5 K based on literature values of material properties.