Final report on EUROMET.T-K4 (EUROMET Project 820): Comparison of the realizations of the ITS-90 at the freezing points of Al (660.323 °C) and Ag (961.78 °C)

D. Heyer, U. Noatsch, E. Tegeler, Miltiadis Anagnostou, E. Turzó-András, I. Antonsen, V. Augevicius, J. Bojkovski, A. Bronnum, V. Chimenti, S. Duris, S. Gaita, E. Filipe, J. Gray, D. Head, E. Grudniewicz, J. Ivarsson, M. Kalemci, O. Kerkhof, I. LoboS. Nemeth, A. Pokhodun, J. Ranostaj, E. Renaot, P. Rosenkranz, Marek Smid, P. Steur, Anton Steiner, M. Valin, Tomislav Veliki, T. Weckström

Research output: Contribution to journalArticleScientificpeer-review

Abstract

KEY COMPARISON: The comparison EUROMET.T-K4 is the regional extension of CCT-K4: an intercomparison of the realisations of the freezing points of Al (660.323 °C) and Ag (961.78 °C). The intercomparison was organized in four loops with long stem standard platinum resistance thermometers (SPRTs) as travelling standards: One 25 O thermometer to be used only at the Al freezing point and two high temperature SPRTs to be used only at the Ag freezing point in each loop. Parallel to the measurements with thermometers the pilot and sub-pilots organized an internal intercomparison using an Ag fixed point cell. Most HTSPRTs showed a strong drift which is mainly due to mechanical stress and poisoning of the sensor by impurities. This drift can partly be compensated by a correction applying Matthiessen's rule. An evaluation of the data taking into account both HTSPRTs in each loop, the linkage of the sub-pilots by measurements at the Ag freezing point and a possible compensation according to Matthiessens's rule allows to calculate the results of the participants also for the measurements at the Ag freezing point. European reference values (ERV) were calculated for measurements at the Al and Ag freezing points. The difference between these ERVs and the corresponding KCRVs of CCT-K4 is also given, which allows the linking of the different comparisons.
Original languageEnglish
JournalMetrologia
Volume45
Issue numberTechnical suppl.
DOIs
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed

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Freezing
Thermometers
Platinum
Impurities
Sensors
Temperature

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Heyer, D. ; Noatsch, U. ; Tegeler, E. ; Anagnostou, Miltiadis ; Turzó-András, E. ; Antonsen, I. ; Augevicius, V. ; Bojkovski, J. ; Bronnum, A. ; Chimenti, V. ; Duris, S. ; Gaita, S. ; Filipe, E. ; Gray, J. ; Head, D. ; Grudniewicz, E. ; Ivarsson, J. ; Kalemci, M. ; Kerkhof, O. ; Lobo, I. ; Nemeth, S. ; Pokhodun, A. ; Ranostaj, J. ; Renaot, E. ; Rosenkranz, P. ; Smid, Marek ; Steur, P. ; Steiner, Anton ; Valin, M. ; Veliki, Tomislav ; Weckström, T. / Final report on EUROMET.T-K4 (EUROMET Project 820) : Comparison of the realizations of the ITS-90 at the freezing points of Al (660.323 °C) and Ag (961.78 °C). In: Metrologia. 2008 ; Vol. 45, No. Technical suppl.
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title = "Final report on EUROMET.T-K4 (EUROMET Project 820): Comparison of the realizations of the ITS-90 at the freezing points of Al (660.323 °C) and Ag (961.78 °C)",
abstract = "KEY COMPARISON: The comparison EUROMET.T-K4 is the regional extension of CCT-K4: an intercomparison of the realisations of the freezing points of Al (660.323 °C) and Ag (961.78 °C). The intercomparison was organized in four loops with long stem standard platinum resistance thermometers (SPRTs) as travelling standards: One 25 O thermometer to be used only at the Al freezing point and two high temperature SPRTs to be used only at the Ag freezing point in each loop. Parallel to the measurements with thermometers the pilot and sub-pilots organized an internal intercomparison using an Ag fixed point cell. Most HTSPRTs showed a strong drift which is mainly due to mechanical stress and poisoning of the sensor by impurities. This drift can partly be compensated by a correction applying Matthiessen's rule. An evaluation of the data taking into account both HTSPRTs in each loop, the linkage of the sub-pilots by measurements at the Ag freezing point and a possible compensation according to Matthiessens's rule allows to calculate the results of the participants also for the measurements at the Ag freezing point. European reference values (ERV) were calculated for measurements at the Al and Ag freezing points. The difference between these ERVs and the corresponding KCRVs of CCT-K4 is also given, which allows the linking of the different comparisons.",
author = "D. Heyer and U. Noatsch and E. Tegeler and Miltiadis Anagnostou and E. Turz{\'o}-Andr{\'a}s and I. Antonsen and V. Augevicius and J. Bojkovski and A. Bronnum and V. Chimenti and S. Duris and S. Gaita and E. Filipe and J. Gray and D. Head and E. Grudniewicz and J. Ivarsson and M. Kalemci and O. Kerkhof and I. Lobo and S. Nemeth and A. Pokhodun and J. Ranostaj and E. Renaot and P. Rosenkranz and Marek Smid and P. Steur and Anton Steiner and M. Valin and Tomislav Veliki and T. Weckstr{\"o}m",
year = "2008",
doi = "10.1088/0026-1394/45/1A/03003",
language = "English",
volume = "45",
journal = "Metrologia",
issn = "0026-1394",
publisher = "Institute of Physics IOP",
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Heyer, D, Noatsch, U, Tegeler, E, Anagnostou, M, Turzó-András, E, Antonsen, I, Augevicius, V, Bojkovski, J, Bronnum, A, Chimenti, V, Duris, S, Gaita, S, Filipe, E, Gray, J, Head, D, Grudniewicz, E, Ivarsson, J, Kalemci, M, Kerkhof, O, Lobo, I, Nemeth, S, Pokhodun, A, Ranostaj, J, Renaot, E, Rosenkranz, P, Smid, M, Steur, P, Steiner, A, Valin, M, Veliki, T & Weckström, T 2008, 'Final report on EUROMET.T-K4 (EUROMET Project 820): Comparison of the realizations of the ITS-90 at the freezing points of Al (660.323 °C) and Ag (961.78 °C)', Metrologia, vol. 45, no. Technical suppl.. https://doi.org/10.1088/0026-1394/45/1A/03003

Final report on EUROMET.T-K4 (EUROMET Project 820) : Comparison of the realizations of the ITS-90 at the freezing points of Al (660.323 °C) and Ag (961.78 °C). / Heyer, D.; Noatsch, U.; Tegeler, E.; Anagnostou, Miltiadis; Turzó-András, E.; Antonsen, I.; Augevicius, V.; Bojkovski, J.; Bronnum, A.; Chimenti, V.; Duris, S.; Gaita, S.; Filipe, E.; Gray, J.; Head, D.; Grudniewicz, E.; Ivarsson, J.; Kalemci, M.; Kerkhof, O.; Lobo, I.; Nemeth, S.; Pokhodun, A.; Ranostaj, J.; Renaot, E.; Rosenkranz, P.; Smid, Marek; Steur, P.; Steiner, Anton; Valin, M.; Veliki, Tomislav; Weckström, T.

In: Metrologia, Vol. 45, No. Technical suppl., 2008.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Final report on EUROMET.T-K4 (EUROMET Project 820)

T2 - Comparison of the realizations of the ITS-90 at the freezing points of Al (660.323 °C) and Ag (961.78 °C)

AU - Heyer, D.

AU - Noatsch, U.

AU - Tegeler, E.

AU - Anagnostou, Miltiadis

AU - Turzó-András, E.

AU - Antonsen, I.

AU - Augevicius, V.

AU - Bojkovski, J.

AU - Bronnum, A.

AU - Chimenti, V.

AU - Duris, S.

AU - Gaita, S.

AU - Filipe, E.

AU - Gray, J.

AU - Head, D.

AU - Grudniewicz, E.

AU - Ivarsson, J.

AU - Kalemci, M.

AU - Kerkhof, O.

AU - Lobo, I.

AU - Nemeth, S.

AU - Pokhodun, A.

AU - Ranostaj, J.

AU - Renaot, E.

AU - Rosenkranz, P.

AU - Smid, Marek

AU - Steur, P.

AU - Steiner, Anton

AU - Valin, M.

AU - Veliki, Tomislav

AU - Weckström, T.

PY - 2008

Y1 - 2008

N2 - KEY COMPARISON: The comparison EUROMET.T-K4 is the regional extension of CCT-K4: an intercomparison of the realisations of the freezing points of Al (660.323 °C) and Ag (961.78 °C). The intercomparison was organized in four loops with long stem standard platinum resistance thermometers (SPRTs) as travelling standards: One 25 O thermometer to be used only at the Al freezing point and two high temperature SPRTs to be used only at the Ag freezing point in each loop. Parallel to the measurements with thermometers the pilot and sub-pilots organized an internal intercomparison using an Ag fixed point cell. Most HTSPRTs showed a strong drift which is mainly due to mechanical stress and poisoning of the sensor by impurities. This drift can partly be compensated by a correction applying Matthiessen's rule. An evaluation of the data taking into account both HTSPRTs in each loop, the linkage of the sub-pilots by measurements at the Ag freezing point and a possible compensation according to Matthiessens's rule allows to calculate the results of the participants also for the measurements at the Ag freezing point. European reference values (ERV) were calculated for measurements at the Al and Ag freezing points. The difference between these ERVs and the corresponding KCRVs of CCT-K4 is also given, which allows the linking of the different comparisons.

AB - KEY COMPARISON: The comparison EUROMET.T-K4 is the regional extension of CCT-K4: an intercomparison of the realisations of the freezing points of Al (660.323 °C) and Ag (961.78 °C). The intercomparison was organized in four loops with long stem standard platinum resistance thermometers (SPRTs) as travelling standards: One 25 O thermometer to be used only at the Al freezing point and two high temperature SPRTs to be used only at the Ag freezing point in each loop. Parallel to the measurements with thermometers the pilot and sub-pilots organized an internal intercomparison using an Ag fixed point cell. Most HTSPRTs showed a strong drift which is mainly due to mechanical stress and poisoning of the sensor by impurities. This drift can partly be compensated by a correction applying Matthiessen's rule. An evaluation of the data taking into account both HTSPRTs in each loop, the linkage of the sub-pilots by measurements at the Ag freezing point and a possible compensation according to Matthiessens's rule allows to calculate the results of the participants also for the measurements at the Ag freezing point. European reference values (ERV) were calculated for measurements at the Al and Ag freezing points. The difference between these ERVs and the corresponding KCRVs of CCT-K4 is also given, which allows the linking of the different comparisons.

UR - http://www.bipm.org/utils/common/pdf/final_reports/T/K4/EUROMET.T-K4.pdf

U2 - 10.1088/0026-1394/45/1A/03003

DO - 10.1088/0026-1394/45/1A/03003

M3 - Article

VL - 45

JO - Metrologia

JF - Metrologia

SN - 0026-1394

IS - Technical suppl.

ER -