Intercomparison of the realization of the ITS-90 at the freezing points of Al and Ag among European NMIs

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

doi:10.1007/s10765-007-0283-y

Intercomparison of the realization of the ITS-90 at the freezing points of Al and Ag among European NMIs

D. Heyer
, U. Noatsch
, E. Tegeler^*
, M. Anagnostou
, E. Turzo-Andras
, I. Antonsen
, V. Augevicius
, J. Bojkovski
, A. Bronnum
, V. Chimenti
, S. Duris
, E. Filipe
, S. Gaita
, J. Gray
, D. Head
, E. Grudniewicz
, J. Ivarsson
, M. Kalemci
, O. Kerkhof
, I. Lobo

S. Nemeth, A. Pokhodun, J. Ranostaj, E. Renaot, P. Rosenkranz, Marek Smid, P. Steur, Anton Steiner, M. Valin, Tomislav Veliki, Thua Weckström

^*Corresponding author for this work

VTT Technical Research Centre of Finland

Vilnius Metrology Centre Semiconductor Physics Institute (VMC/PFI)
Metrology Institute of the Republic of Slovenia
Danish Technological Institute (DTI)
Centro Español de Metrología (CEM)
Portuguese Institute for Quality Services (IPQ)
National Institute of Metrology (INM)
RISE Research Institutes of Sweden
TÜBİTAK National Metrology Institute (UME)
Dutch Metrology Institute (VSL)
D.I. Mendeleyev All-Russian Institute for Metrology
Laboratoire Commun de Métrologie (LNE-CNAM)
Bundesamt für Eich- und Vermessungswesen (BEV)
National Metrological Institute (INRIM)
German National Metrology Institute (PTB)
Hellenic Institute of Metrology (EIM)
National Office of Measures (OMH)
Norwegian Metrology Service
Temperature Standard Laboratory (VMT/PFI)
National Physics Laboratory (NPL)
Central Office of Measures (GUM)
Scientific and Technological Research Council of Turkey (TÜBITAK)
Slovak Institute of Metrology (SMU)
Czech Metrology Institute (CMI)
Federal Institute of Metrology (METAS)
Laboratoire National de Métrologie et d’Essais (LNE)
University of Zagreb
Centre for Metrology and Accreditation Finland (MIKES)

Research output: Contribution to journal › Article › Scientific › peer-review

9 Citations (Scopus)

Abstract

The EUROMET.T-K4 comparison is the regional extension of CCT-K4, an intercomparison of the realizations of the freezing points of Al (660.323°C) and Ag (961.78°C). The intercomparison was organized in four loops. Long-stem standard platinum resistance thermometers (SPRTs) were used as traveling standards: 25 O thermometers to be used only at the Al freezing point and two high-temperature standard platinum resistance thermometers (HTSPRTs) to be used only at the Ag freezing point in each loop. Parallel to the measurements with thermometers, the pilots 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 be partially compensated by a correction based on 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 calculation of the results of the participants' measurements at the Ag freezing point. The results of the participating laboratories are summarized, and proposals for key comparison reference values and linking of the results to CCT-K3 and CCT-K4 are presented.

Original language	English
Pages (from-to)	1964-1975
Journal	International Journal of Thermophysics
Volume	28
Issue number	6
DOIs	https://doi.org/10.1007/s10765-007-0283-y
Publication status	Published - 2007
MoE publication type	A1 Journal article-refereed

Keywords

Al freezing point
Ag freezing point
CCT
EUROMET
Fixed points
High-temperature standard platinum resistance thermometers
Key comparison
Matthiessen's rule

Access to Document

10.1007/s10765-007-0283-y

Cite this

Heyer, D., Noatsch, U., Tegeler, E., Anagnostou, M., Turzo-Andras, E., Antonsen, I., Augevicius, V., Bojkovski, J., Bronnum, A., Chimenti, V., Duris, S., Filipe, E., Gaita, S., Gray, J., Head, D., Grudniewicz, E., Ivarsson, J., Kalemci, M., Kerkhof, O., ... Weckström, T. (2007). Intercomparison of the realization of the ITS-90 at the freezing points of Al and Ag among European NMIs. International Journal of Thermophysics, 28(6), 1964-1975. https://doi.org/10.1007/s10765-007-0283-y

@article{58c2a74d65f34735a638b4662f17c0c7,

title = "Intercomparison of the realization of the ITS-90 at the freezing points of Al and Ag among European NMIs",

abstract = "The EUROMET.T-K4 comparison is the regional extension of CCT-K4, an intercomparison of the realizations of the freezing points of Al (660.323°C) and Ag (961.78°C). The intercomparison was organized in four loops. Long-stem standard platinum resistance thermometers (SPRTs) were used as traveling standards: 25 O thermometers to be used only at the Al freezing point and two high-temperature standard platinum resistance thermometers (HTSPRTs) to be used only at the Ag freezing point in each loop. Parallel to the measurements with thermometers, the pilots 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 be partially compensated by a correction based on 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 calculation of the results of the participants' measurements at the Ag freezing point. The results of the participating laboratories are summarized, and proposals for key comparison reference values and linking of the results to CCT-K3 and CCT-K4 are presented.",

keywords = "Al freezing point, Ag freezing point, CCT, EUROMET, Fixed points, High-temperature standard platinum resistance thermometers, Key comparison, Matthiessen's rule",

author = "D. Heyer and U. Noatsch and E. Tegeler and M. Anagnostou and E. Turzo-Andras and I. Antonsen and V. Augevicius and J. Bojkovski and A. Bronnum and V. Chimenti and S. Duris and E. Filipe and S. Gaita 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 Thua Weckstr{\"o}m",

year = "2007",

doi = "10.1007/s10765-007-0283-y",

language = "English",

volume = "28",

pages = "1964--1975",

journal = "International Journal of Thermophysics",

issn = "0195-928X",

publisher = "Springer",

number = "6",

}

Heyer, D, Noatsch, U, Tegeler, E, Anagnostou, M, Turzo-Andras, E, Antonsen, I, Augevicius, V, Bojkovski, J, Bronnum, A, Chimenti, V, Duris, S, Filipe, E, Gaita, S, 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 2007, 'Intercomparison of the realization of the ITS-90 at the freezing points of Al and Ag among European NMIs', International Journal of Thermophysics, vol. 28, no. 6, pp. 1964-1975. https://doi.org/10.1007/s10765-007-0283-y

TY - JOUR

T1 - Intercomparison of the realization of the ITS-90 at the freezing points of Al and Ag among European NMIs

AU - Heyer, D.

AU - Noatsch, U.

AU - Tegeler, E.

AU - Anagnostou, M.

AU - Turzo-Andras, E.

AU - Antonsen, I.

AU - Augevicius, V.

AU - Bojkovski, J.

AU - Bronnum, A.

AU - Chimenti, V.

AU - Duris, S.

AU - Filipe, E.

AU - Gaita, S.

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, Thua

PY - 2007

Y1 - 2007

N2 - The EUROMET.T-K4 comparison is the regional extension of CCT-K4, an intercomparison of the realizations of the freezing points of Al (660.323°C) and Ag (961.78°C). The intercomparison was organized in four loops. Long-stem standard platinum resistance thermometers (SPRTs) were used as traveling standards: 25 O thermometers to be used only at the Al freezing point and two high-temperature standard platinum resistance thermometers (HTSPRTs) to be used only at the Ag freezing point in each loop. Parallel to the measurements with thermometers, the pilots 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 be partially compensated by a correction based on 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 calculation of the results of the participants' measurements at the Ag freezing point. The results of the participating laboratories are summarized, and proposals for key comparison reference values and linking of the results to CCT-K3 and CCT-K4 are presented.

AB - The EUROMET.T-K4 comparison is the regional extension of CCT-K4, an intercomparison of the realizations of the freezing points of Al (660.323°C) and Ag (961.78°C). The intercomparison was organized in four loops. Long-stem standard platinum resistance thermometers (SPRTs) were used as traveling standards: 25 O thermometers to be used only at the Al freezing point and two high-temperature standard platinum resistance thermometers (HTSPRTs) to be used only at the Ag freezing point in each loop. Parallel to the measurements with thermometers, the pilots 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 be partially compensated by a correction based on 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 calculation of the results of the participants' measurements at the Ag freezing point. The results of the participating laboratories are summarized, and proposals for key comparison reference values and linking of the results to CCT-K3 and CCT-K4 are presented.

KW - Al freezing point

KW - Ag freezing point

KW - CCT

KW - EUROMET

KW - Fixed points

KW - High-temperature standard platinum resistance thermometers

KW - Key comparison

KW - Matthiessen's rule

U2 - 10.1007/s10765-007-0283-y

DO - 10.1007/s10765-007-0283-y

M3 - Article

SN - 0195-928X

VL - 28

SP - 1964

EP - 1975

JO - International Journal of Thermophysics

JF - International Journal of Thermophysics

IS - 6

ER -

Intercomparison of the realization of the ITS-90 at the freezing points of Al and Ag among European NMIs

Abstract

Keywords

Access to Document

Fingerprint

Cite this