| Zugriffsnummer | 33888 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Final report on CCM.M-K4: Key comparison of 1 kg stainless steel mass standards |
| Autor(in); Institution |
Becerra, Luis Omar; Centro Nacional de Metrología, Mass and Density Division, Queretaro, MEXICO
Borys, Michael; 1.1, Masse, PTB-Braunschweig
Chung, Jin Wan; Korea Research Institute of Standards and Science, Centre for Mass and Related Quantities, Daejeon, REPUBLIC OF KOREA
Davidson, Stuart; National Physical Laboratory (NPL), Mass group, Engineering Measurement Division, Teddington, UK
Fuchs, Peter; Federal Institute of Metrology (METAS), Labor Masse, Kraft und Druck, Bern-Wabern, SWITZERLAND
Jacques, Claude; National Research Council of Canada (NRC), Mass Standards, Ottawa, CANADA
Jian, Wang; National Institute of Metrology, Mechanics and Acoustics Division, Beijing, REPUBLIC OF CHINA
Kubarych, Zeina J.; National Institute of Standards and Technology (NIST), Physical Measurement Laboratory, Quantum Measurement Division, Mass and Force, Gaithersburg, USA
Kumar, Anil; National Physical Laboratory, Mass Standards, New Delhi, INDIA
Malengo, Andrea; Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, ITALY
Fen, Kitty; National Measurement Institute, West Lindfield, NSW, AUSTRALIA
Medina, Nieves; Centro Español de Metrología, Area de Masa, Madrid, SPAIN
Meury, Paul-André; Laboratoire National de Métrologie et d'Essais, Département Masse, Volume, Masse volumique, Viscosité, Paris, FRANCE
Mizushima, Shigeki; National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology Mechanical Metrology Division, AIST, Tsukuba, JAPAN
Picard, Alain; Bureau International des Poids et Mesures (BIPM), Sevres, FRANCE
Steyn, Ronél; National Metrology Institute of South Africa, Mass, Density and Small Volume Laboratory, Pretoria, SOUTH AFRICA
Zelenka, Zoltan; Bundesamt für Eich- und Vermessungwesen, Mass and Related Quantities, Vienna, AUSTRIA
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| Quelle/Jahr | Metrologia: 51 (2014), 1A, Tech. Suppl., 22 S. |
| Artikelnummer | 07009 |
| Availability | [online only] |
| ISSN | 0026-1394 ; 1681-7575 |
| DOI | |
| Verlag | Bristol: IOP |
| Freie Schlagworte | Key comparison ; kilogram ; mass standards ; stainless steel |
| Zusammenfassung | This report describes a key comparison of 1 kg stainless steel mass standards, CCM.M-K4, undertaken by the Consultative Committee for Mass and Related Quantities (CCM) Working Group on the Dissemination of the kilogram (WGD-kg). The CCM.M-K4 comparison was launched during the 12th meeting of the CCM (2010). The aim of the present comparison is to verify the consistency of 1 kg stainless steel mass standards among members of the CCM. The previous CCM 1 kg stainless steel mass standards comparison was carried out in 1995-1997 as the CCM.M-K1 comparison. The Bureau International des Poids et Mesures (BIPM) was the pilot laboratory for this key comparison. There were sixteen participants in the CCM.M-K4 comparison, all are CCM members. The comparison was structured into four petals with two stainless steel travelling mass standards per petal. The measurements and the reported results were completed in between one month and five months depending on the participants. One laboratory's results were found to be inconsistent with the other laboratories' results and one other laboratory gave a significant deviation from the key comparison reference value (KCRV). Both laboratories were contacted before preparation of the draft A report, without disclosing the details of the deviations, to allow them to check and revise their values. The fourteen other participants were in agreement with each other and degrees of equivalence have been established. Finally, the mass values of the eight stainless steel travelling standards were determined in air by the NMIs with claimed standard uncertainties ranging from 0.007 mg to 0.021 mg. Degrees of equivalence have been established by using the generalized linear least-squares estimation (GLS) method. The result demonstrates the high quality of this comparison and that some participants are able to provide, for their mass calibration services, standard uncertainties of around ten micrograms. The good uniformity of worldwide mass dissemination since the last periodic mass verification carried out in 1992 is demonstrated by the agreement among the NMI`s. In addition, the observed weighted mean of the NMI deviations against the BIPM is -0.0098 mg (σ = 0.0036 mg). Despite the good result obtained in this particular comparison we should, in order to have a more accurate calibration system, improve the knowledge of the ageing effects of the mass references and increase the BIPM calibration frequency of the national prototypes. |
Zitierung
Becerra, L. O., Borys, M., Chung, J. W., Davidson, S., Fuchs, P., Jacques, C., Jian, W., Kubarych, Z. J., Kumar, A., Malengo, A., Fen, K., Medina, N., Meury, P.-A., Mizushima, S., Picard, A., Steyn, R., & Zelenka, Z. (2014). Final report on CCM.M-K4: Key comparison of 1 kg stainless steel mass standards. Metrologia, 51(1A, Tech. Suppl.), 22 S. https://doi.org/10.1088/0026-1394/51/1a/07009