DOI: https://doi.org/10.24027/2306-7039.1A.2017.99380

Features of evaluation drift effect during Key Comparison COOMET.EM-K5

Stanislav Karpenko

Анотація


Results of pilot laboratory and participating laboratories which are measuring the same travelling standard during Key Comparison must be most similar. However, this may not always be possible, because the travelling standard which is sent in turn to all participating laboratories is not always perfectly stable. So that it is necessary to take into account the drift effect of the travelling standard. The article describes some problems concerning the evaluation drift effect of travelling standard and its further influence on evaluation key comparison reference value during Key Comparison. The procedure for evaluation drift effect when its model can be linear or not linear was presented. Comparative analysis of the proposed procedures for evaluation drift effect is applied to the Key Comparison of Power COOMET.EM-K5 was done.

Ключові слова


Drift Effect, Key Comparison, Electric Power, Key Comparison Reference Value, Travelling Standard

Повний текст:

PDF (English)

Посилання


BIPM 1999. Mutual Recognition of National Measurement Standards, of Calibration and Measurement Certificates issued by National Metrology Institutes (CIPM revision 2003).

Wübbeler G, Bodnar O, Mickan B and Elster C 2015 Explanatory power of degrees of equivalence in the presence of a random instability of the common measurand Metrol. 52 pp. 400–405.

Elster C and Toman B 2013 Analysis of key comparison data: critical assessment of elements of current practice with suggested improvements Metrol. 50 pp. 549–555.

Stepanov A V 2007 General problems of metrology and measurement technique – Comparing algorithms for evaluating key comparisons with linear drift in the reference standard, Meas. Tech. 50 pp. 1019–1027.

Zhang N F, Liu H-K, Sedransk N and Strawderman W E 2004 Statistical analysis of key comparisons with linear trends Metrol. 41 pp. 231–237.

Zhang N F, Strawderman W E, Liu H-K and Sedransk N 2006 Statistical analysis for multiple artifact problem in key comparisons with linear trends Metrol. 43 pp. 21–26.

Elster C, Woger W, Cox M 2005 Analysis of key comparison data: unstable travelling standards Meas. Tech.48 pp. 883–893.

Wübbeler G, Bodnar O and Elster C 2016 Bayesian hypothesis testing for key comparisons Metrologia 53 pp. 1131–1138.

TECHNICAL PROTOCOL on COOMET 695/UA/16 Key Comparison of Power (COOMET.EM-K5). O. Velychko, S. Karpenko. – January 2017. SE “Ukrmeterteststandard” p. 15.

Bergoglio M, Malengo A and Mari D 2011 Analysis of interlaboratory comparisons affected by correlations of the reference standards and drift of the travelling standards Measurement. 44 pp. 1461–1467.


Пристатейна бібліографія ГОСТ






УКРАЇНСЬКИЙ МЕТРОЛОГІЧНИЙ ЖУРНАЛ / UKRAINIAN METROLOGICAL JOURNAL

ISSN (Print) 2306-7039

ISSN (Online) 2522-1345