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Bilateral comparison of water triple point realization at INTiBS and VSL – the Netherlands
Języki publikacji
Abstrakty
INTiBS – depozytariusz wzorca państwowego – zobowiązany jest do potwierdzania swoich kompetencji przez udział w międzynarodowych porównaniach kluczowych. Wymagania te wynikają z porozumienia CIPM MRA. Porównania dokładności realizacji punktu potrójnego wody w INTiBS – elementu wzorca państwowego - zostały przeprowadzone w Instytucie Metrologii w Holandii (VSL). Różnica temperatur punktu potrójnego wody uzyskiwanych w komórkach VSL i INTiBS wynosiła 2,9 μK przy niepewności pomiaru u = 46 μK.
In Poland the National Temperature Scale is maintained by two distinct National Laboratories, by the Central Office of Measures – GUM in Warsaw, for long-stem thermometers at temperatures above the argon triple point with a temperature -189,3442 °C up to + 961,78 °C, and by the Institute of Low Temperature and Structure Research – INTiBS in Wroclaw, for capsule thermometers at temperatures below the water triple point down to 13,8033 K (the triple point of hydrogen). Since both laboratories use the water triple point but only GUM could participated in EURAMET.T-K7, a separate bilateral comparison was set up with the Dutch Metrology Institute - VSL, in order to create a direct reference to CCT-K7 for INTiBS. A temperature difference of the triple point of water at the INTiBS reference cell and the VSL water cell determined during the comparisons was equal to 2,9 μK with a standard uncertainty u = 46 μK for k = 1. The comparison gives a direct linkage to the EURAMET. T-K7. The equivalence between the INTiBS standard TINT(TPW) and the European Reference Value TERV(TPW) is 1,2 μK with an expanded uncertainty U = 111 μK for k = 2.
Wydawca
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Tom
Strony
437--440
Opis fizyczny
Bibliogr. 13 poz., rys., tab., wzory
Twórcy
autor
- Instytut Niskich Temperatur i Badań Strukturalnych im. Wł. Trzebiatowskiego PAN, ul. Okólna 2, 50-422 Wrocław
autor
- Instytut Niskich Temperatur i Badań Strukturalnych im. Wł. Trzebiatowskiego PAN, ul. Okólna 2, 50-422 Wrocław
autor
- Dutch Metrology Institute, 2600 AR Delft, P. O. Box 654, Netherlands
Bibliografia
- [1] BIPM, document Mutual Recognition Arrangement of national measurement standards and of calibration and measurement certificates issued by national metrology institutes (MRA), 1999.
- [2] Preston-Thomas H.: The International Temperature Scale of 1990 (ITS-90), Metrologia 27, 1990.
- [3] www.euramet.org/TC projects database
- [4] Szmyrka-Grzebyk A., Lipiński L., Kowal A., Steur P. P. M., Dematteis R.: Intercomparison of water triple point cells from INTiBS and INRIM, Metrology and Measurement Systems XV, 2008.
- [5] Peruzzi A. i in.: Final Report on EUROMET.T-K7: Key comparison of water triple point cells, Metrologia 46, Tech. Suppl. 03001.
- [6] BIPM – The International Practical Temperature Scale of 1968 (IPTS-68), Metrologia 15, 1969.
- [7] BIPM - International Committee for Weights and Measures, Proceeding of the sessions of the 94th meeting, 2005, Recommendation 2.
- [8] Nicholas J. V. I in.: Isotopic influence on the triple point of water and the definition of the kelvin, 6th. International Symposium on Temperature and Thermal Measurements in Industry and Science TEMPMEKO’96, 1996 – Proceedings.
- [9] Pello R., Goebel R., Kohler R.: Results of an international comparison of water triple point cells, Metrologia, 34, 1997.
- [10] E. Renaot et al.: Comparison of realizations of the triple-point of water; EUROMET project No 549, 9th International Symposium on Temperature and Thermal Measurements in Industry and Science, TEMPMEKO’05, 2005 - Proceedings .
- [11] EUROMET Guide no. 3, “Euromet Guidelines on Conducting Comparisons”, version 02.7.
- [12] M. Stock, et al.: Final Report on CCT-K7. Key comparison of water triple point cells, Metrologia 43 (Tech. Suppl), 03001,
- [13] Peruzzi A., Szmyrka-Grzebyk A: Final report on EURAMET.T-K7.2: Bilateral comparison of water triple point cells, Metrologia, 2012, 49, Tech. Suppl., 03006.
Typ dokumentu
Bibliografia
Identyfikator YADDA
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