METROLOGICAL HISTORY ANALYSES OF PRESSURE STANDARDS FOR DETERMINATION OF THEIR METROLOGICAL CAPABILITIES

Jure Vindišar, Andrej Smrecnik, Ivan Bajsic

Abstract

The knowledge of metrological history of pressure standards is of a big importance for determination of their metrological capabilities. When providing traceability to lower metrological levels it is essential to determine the uncertainty of generated reference pressure. The estimation of the uncertainty of generated reference pressure can be done only by analysing metrological history of selected standard and estimation of all parameters that have the influence on the generated reference pressure uncertainty. Analyses of selected LMPS (Laboratory of Measurements in Process Engineering) pressure standards (mechanical and electromechanical manometers only) are showing non-negligible deviations of estimated measurement capabilities from declared accuracy for selected standards. These deviations are a source for changed best metrological capabilities and therefore require all necessary attention.

Keywords

pressure standards, measurement uncertainty, best measurement capability

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PWC-2003-TC8-009.pdf

DOI

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IMEKO TC

TC8 - Traceability in Metrology

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