Optimising calibration and measurement capabilities in terms of economics in conformity assessment |
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Authors: | Gaber Beges Janko Drnovsek Leslie R Pendrill |
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Institution: | (1) Laboratory of Metrology and Quality, Faculty of Electrical Engineering, University of Ljubljana, Trzaska 25, 1000 Ljubljana, Slovenia;(2) Measurement Technology, SP Technical Research Institute of Sweden, Box 857, 50115 Boras, Sweden |
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Abstract: | Calibration measurement capabilities (CMC) are key factors in declaring the metrological performance of national metrology
institutes (NMIs). Different countries have different CMC capabilities, reflecting both the existing measurement science competence
as well as the perceived national needs for traceable calibration. This paper deals with increasing interest in decision-making
in conformity assessment in terms of effective costs associated with measurement, testing and incorrect decision-making. The
work examines the CMCs of calibration laboratories and NMIs with economic decision theory, in particular, in terms of customer
satisfaction and with respect to conformity assessment issues. Optimal strategies for calibration costs, maintenance of national
measurement standards, testing and production costs are illustrated in practical examples. CMCs are an essential instrument
to enable conformity assessment both for product safety, legal metrology, quality requirements as well as scientific research.
The newly defined term “target measurement uncertainty”, introduced in the latest international metrology vocabulary (VIM),
should be therefore always related to appropriate CMCs and related dissemination paths in the whole conformity assessment
procedure. These requirements are clear and transparent justification for the development of required national metrological
infrastructures, in order to fulfil the requirements of target measurement uncertainty for intended use or application in
the particular conformity assessment procedure. |
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