Analysis of Volume Error Related to the Liquid Level of Wet Gas Meters

Abstract

Wet gas meters are increasingly growing in importance in connection with the development of traceability systems based on the new Testing and Calibration Act. The measuring accuracy of the gas meters must be represented by the “uncertainty”. But there is a little misunderstanding about the “uncertainty”. This may be caused by only a small amount of reliable technical references available regarding the relationship between the volume error of wet gas meters and their structural and principial features. This paper describes the basic operation characteristics of wet gas meters and provides an analysis of the liquid level and volume error to encourage a correct evaluation of the “uncertainty” of the gas meters.