EURAMET key comparison 1031 (EURAMET.M.D-K1.1) - solid density comparison

Bettin, Horst; Borys, Michael; Firlus, Martin; Buchner, Christian; Zelenka, Zoltan; Medina, Nieves; Parlic-Risov, Tijana; Bezjak, Mladen; Mitsas, Chris; Lefkopoulos, Alexandros; Lenard, Elzbieta; Popa, George Florian; Malengo, Andrea; Madec, Tanguy; Beaudoux, Florian; Fuchs, Peter; Marti, Kilian; Wüthrich, Christian; Kajastie, Heikki; Eltawil, Alaaeldin A.; Fujii, Ken-ichi; Kuramoto, Naoki; Waseda, Atsushi; Perkin, Michael; Davidson, Stuart; Akcadag, Ümit Y.; Domostroev, Aleksey

doi:https://doi.org/10.1088/0026-1394/57/1a/07028

Zugriffsnummer	45313
Dokumenttyp	Zeitschriftenartikel
Peer Review	mit Peer Review
Sprache	Englisch
Titel	EURAMET key comparison 1031 (EURAMET.M.D-K1.1) - solid density comparison
Autor(in); Institution	Bettin, Horst; 1.8, Masse - Darstellung der Einheit, PTB-Braunschweig Borys, Michael; 1.1, Masse, PTB-Braunschweig Firlus, Martin; PTB-Braunschweig, retired staff Buchner, Christian; Bundesamt für Eich- und Vermessungswesen (BEV), Vienna, AUSTRIA Zelenka, Zoltan; Bundesamt für Eich- und Vermessungswesen (BEV), Vienna, AUSTRIA Medina, Nieves; Centro Español de Metrología (CEM), Madrid, SPAIN Parlic-Risov, Tijana; State Office for Metrology (DZM), Laboratory for Density, Ibrisimoviceva, CROATIA Bezjak, Mladen; State Office for Metrology (DZM), Laboratory for Density, Ibrisimovicevaa, CROATIA Mitsas, Chris; Hellenic Institute of Metrology (EIM), Industrial Area of Thessaloniki,Thessaloniki, GREECE Lefkopoulos, Alexandros; Hellenic Institute of Metrology (EIM), Industrial Area of Thessaloniki,Thessaloniki, GREECE Lenard, Elzbieta; Central Office of Measures (GUM), Physical Chemistry Department, Warszawa, POLAND Popa, George Florian; National Institute of Metrology (INM), Bucharest, ROMANIA Malengo, Andrea; Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, ITALY Madec, Tanguy; Laboratoire National de Métrologie et d'Essais (LNE), Paris, FRANCE Beaudoux, Florian; Laboratoire National de Métrologie et d'Essais (LNE), Paris, FRANCE Fuchs, Peter; Federal Office of Metrology (METAS), Bern-Wabern, SWITZERLAND Marti, Kilian; Federal Office of Metrology (METAS), Bern-Wabern, SWITZERLAND Wüthrich, Christian; Federal Office of Metrology (METAS), Bern-Wabern, SWITZERLAND Kajastie, Heikki; Centre for Metrology and Accreditation (MIKES), Espoo, FINLAND Eltawil, Alaaeldin A.; National Institute of Standard (NIS), Giza, EGYPT Fujii, Ken-ichi; National Metrology Institute of Japan (NMIJ), Tsukuba, JAPAN Kuramoto, Naoki; National Metrology Institute of Japan (NMIJ), Tsukuba, JAPAN Waseda, Atsushi; National Metrology Institute of Japan (NMIJ), Tsukuba, JAPAN Perkin, Michael; National Physical Laboratory (NPL), Teddington, UK Davidson, Stuart; National Physical Laboratory (NPL), Teddington, UK Akcadag, Ümit Y.; Tubitak-Ulusal Metroloji Enstitüsü (UME), TURKEY Domostroev, Aleksey; D. I. Mendeleyev Institute for Metrology (VNIIM), St Petersburg, RUSSIAN FEDERATION
Quelle/Jahr	Metrologia: 57 (2020), 1A, Tech. Suppl., 1 - 45
Artikelnummer	07028
Availability	[online only]
ISSN	0026-1394 (PRINT) ; 1681-7575 (ONLINE)
DOI	https://doi.org/10.1088/0026-1394/57/1a/07028
URL	https://www.bipm.org/utils/common/pdf/final_reports/M/D-K1/EURAMET.M.D-K1.1.pdf
Verlag	Bristol: IOP Publishing
Zusammenfassung	The results are presented of the key comparison EURAMET 1031 (EURAMET.M.DK1.1) that covered the measurements of density and volume of silicon spheres of three different masses at 20 °C and 101325 Pa. The volume and density determinations of 15 national metrology institutes (NMIs) were checked and linked to the CCM.D-K1 key comparison. The measurements were carried out near 20 °C and at atmospheric pressure by the hydrostatic method in the time interval from 16 May 2008 to 18 Jan 2011. The comparison was performed in two petals with three spheres in each petal. The travelling standards of petal 1 have a mass of 1001 g, 200 g and 35 g (Petal 2: 984 g, 239 g, 35 g). Whereas the reference values of the 1 kg travelling standards could be determined by the link to the CCM.D-K1 comparison, the density reference values for the smaller spheres were determined by density comparison to the 1 kg spheres using the pressure-of-flotation method. One result was wrong due to a mistake in the mass determination. Additionally, four of the 57 volume (or density) values were discrepant with En values larger than 1.1, 1.2, 1.3 and 1.6. Five NMIs achieved density uncertainties of about 1 ppm (1 x 10^-6in relative terms) or less for the 1 kg spheres. This satisfies the needs of all customers who wish to calibrate solid density standards for other laboratories. Volume determinations of mass standards, air density artefacts or sorption artefacts should reach an uncertainty of about 1 mm³ in order to reduce the effect on the mass uncertainty to about 1 µg. At least for silicon spheres this is reached by eight NMIs. Due to the higher density of stainless steel this may be different for weights and will be checked within the CCM.D-K3 comparison. The results of the comparison can be used to submit new or improved entries in the calibration measurement capabilities table in the BIPM key comparison database.

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Bettin, H., Borys, M., Firlus, M., Buchner, C., Zelenka, Z., Medina, N., Parlic-Risov, T., Bezjak, M., Mitsas, C., Lefkopoulos, A., Lenard, E., Popa, G. F., Malengo, A., Madec, T., Beaudoux, F., Fuchs, P., Marti, K., Wüthrich, C., Kajastie, H., Eltawil, A. A., Fujii, K.-I., Kuramoto, N., Waseda, A., Perkin, M., Davidson, S., Akcadag, Ü. Y., & Domostroev, A. (2020). EURAMET key comparison 1031 (EURAMET.M.D-K1.1) - solid density comparison. Metrologia, 57(1A, Tech. Suppl.), 1–45. https://doi.org/10.1088/0026-1394/57/1a/07028

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