Estimation of the accuracy of measurements of oil mass in fiscal metering

Abstract

In modern metrology, two approaches to assessing the accuracy of measurement results have been formed: the traditional approach using errors and a relatively new approach based on the concept of uncertainty. The question of which of them to use in a specific metrological situation is not idle and is of great practical importance. In particular, this applies to the commercial accounting of marketable oil, especially when it is supplied abroad. In Russia, at the level of state accounting policy, an estimate is made based on the error, and in most other countries - according to uncertainty, which causes discrepancies in the mass of oil exported. The article analyzes both approaches and, on the basis of a comparative calculation of both estimates for several systems for measuring the quantity and quality of oil (OQMS), through which commercial accounting is conducted, the expediency of switching to an estimate through expanded uncertainty is shown.