Analysis of indusrial measurement uncertainty of the gas mass flow using the ultrasonic metering system

This article presents the analysis of measurement uncertainty of a gas mass flow using the ultrasonic metering system. This subject is very important especially in the case of transactional gas flow metering because of the extensive use of this type of metering systems recently, which surrounds not only the quantitative evaluation but also qualitative results of this type so those measurements are important. To attain this purpose, the authors of the paper propose to use two softwares where their uncertainty models presented here are based on the GUM uncertainty methodology: One is the FLOBOSS S600+ developed by EMERSON Company and the second one for the expanded uncertainty calculation is performed by the Norwegian Society for Oil and Gas Measurement NFOGM. The paper presents a comparative analysis of the results obtained with both of these methods.