THE ROLE OF MATHEMATICAL MODELING IN ASSESSING THE UNCERTAINTY OF FLOW STANDARDS AND THE ASSOCIATED RISKS
Keywords:
flow standard, measurement uncertainty, mathematical modeling, analysis of measurement results, risks, accuracy.Abstract
Flow standards (standards for measuring gas or liquid flow rates) occupy a central position in the metrological system. Accurate assessment of their uncertainty is essential for reliable calibration, industrial accounting, and commercial measurement operations. In this process, mathematical modeling plays a decisive role.
Mathematical models used in flow determination enable the study of uncertainty sources, the influence of parameters, and the mechanisms of uncertainty propagation. At the same time, factors such as incorrect model selection, errors in input parameters, neglect of correlations, numerical computation inaccuracies, and failure to validate model results against experimental data can adversely affect uncertainty estimates. This article proposes approaches aimed at mitigating these risks and enhancing the reliability of flow standards.
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