Abstract
In the field of humidity quantities, the first CIPM key comparison, CCT-K6 is at its end. The corresponding European regional key comparison, EUROMET.T-K6, was completed in early 2008, about 4 years after the starting initial measurements in the project. In total, 24 NMIs from different countries took part in the comparison. This number includes 22 EURAMET countries, and Russia and South Africa. The comparison covered the dew-point temperature range from −50 °C to +20 °C. It was carried out in three parallel loops, each with two chilled mirror hygrometers as transfer standards in each loop. The comparison scheme was designed to ensure high quality results with evenly spread workload for the participants. It is shown that the standard uncertainty due to the long-term instability was smaller than 0.008 °C in all loops. The standard uncertainties due to links between the loops were found to be smaller than 0.025 °C at −50 °C and 0.010 °C elsewhere. Conclusions on the equivalence of the dew-point temperature standards are drawn on the basis of calculated bilateral degrees of equivalence and deviations from the EURAMET comparison reference values (ERV). Taking into account 16 different primary dew-point realizations and 8 secondary realizations, the results demonstrate the equivalence of a large number of laboratories at an uncertainty level that is better than achieved in other multilateral comparisons so far in the humidity field.
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Heinonen M.: Metrologia 47(Tech. Suppl.), 03003 (2010)
Hudoklin D., Bojkovski J., Nielsen J., Drnovšek J.: Measurement 41, 950 (2008)
Hudoklin D., Drnovšek J.: Int. J. Thermophys. 29, 1652 (2008)
P. Mackrodt, R. Benyon, G. Scholz, in Papers and Abstracts from the Third International Symposium on Humidity and Moisture, part 1, National Physical Laboratory, UK, 1998, pp. 159–166
R. Benyon, P. Huang, in Papers and Abstracts from the Third International Symposium on Humidity and Moisture, part 1, National Physical Laboratory, UK, 1998, pp. 28–36
A. Actis, S. Bell, R. Benyon, B. Cretinon, M. de Groot, M. Heinonen, G. Scholz, A. Steiner, in Papers and Abstracts from the Third International Symposium on Humidity and Moisture, part 1, National Physical Laboratory, UK, 1998, pp.10–19
Jonker D., Mnguni M.R., Liedberg H.G.: Int. J. Thermophys. 29, 1644 (2008)
P. Mackrodt, F. Fernandes, in Proceedings of TEMPMEKO 2001, 8th International Symposium on Temperature and Thermal Measurements in Industry and Science, ed. by B. Fellmuth, J. Seidel, G. Scholz (VDE verlag, Berlin, 2002), p. 589
K. Flakiewicz, in Papers and Abstracts from the Third International Symposium on Humidity and Moisture, part 1 (National Physical Laboratory, UK, 1998), pp. 62–67
H. Mitter, in 5th International Symposium on Humidity and Moisture ISHM 2006 (INMETRO, Brazil, 2006), ISBN 978-85-86920-04-2
A. Actis, M_Banfo, V.C. Fernicola, R. Galleano, S. Merlo, in Papers and Abstracts from the Third International Symposium on Humidity and Moisture (National Physical Laboratory, UK, 1998), pp. 2–9
A. Actis, V.C. Fernicola, M. Banfo, in Proceedings of TEMPMEKO ’99, 7th International Symposium on Temperature and Thermal Measurements in Industry and Science, ed. by J.F. Dubbeldam, M.J. de Groot (Edauw Johannissen bv, Delft, 1999), pp. 185–190
V.C. Fernicola, M.Banfo, in Proceedings of TEMPMEKO 2001, 8th International Symposium on Temperature and Thermal Measurements in Industry and Science, ed. by B. Fellmuth, J. Seidel, G. Scholz (VDE Verlag, Berlin, 2002), pp. 751–756
M. Heinonen, in Proceedings of TEMPMEKO 2001, 8th International Symposium on Temperature and Thermal Measurements in Industry and Science, ed. by B. Fellmuth, J. Seidel, G. Scholz (VDE Verlag, Berlin, 2002), pp. 217–222
M. Heinonen, L. Uusipaikka, in Proceedings of TEMPMEKO 2004, 9th International Symposium on Temperature and Thermal Measurements in Industry and Science, ed. by D. Zvizdić, L.G. Bermanec, T. Veliki, T. Stašić (FSB/LPM, Zagreb, Croatia, 2004), pp. 669–675
Heinonen M., Bell S., Flakiewicz K., Mamontov G., Birch P.K., Steiner A., Ugur S.: MIKES Publication J6/2001, pp. 50. Centre for Metrology and Accreditation, Helsinki (2001)
IEC 60751 (1995-07), ISO 1995
Cox M.: Metrologia 39, 589 (2002)
Cox M.: Metrologia 44, 187 (2007)
L. Nielsen, Technical Report DFM-99-R39, DFM 2000
Heinonen M.: Metrologia 39, 303 (2002)
Li Wang, Takahashi C., Hussain F., Hong Yi, Nham H.S., Chan K.H., Lee L.T., Chahine K.: Metrologia 44(Tech. Suppl.), 03002 (2007)
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Heinonen, M., Anagnostou, M., Bell, S. et al. Investigation of the Equivalence of National Dew-Point Temperature Realizations in the −50 °C to + 20 °C Range. Int J Thermophys 33, 1422–1437 (2012). https://doi.org/10.1007/s10765-011-0950-x
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DOI: https://doi.org/10.1007/s10765-011-0950-x