Intercomparison of the dew-point temperature realizations at LPM and MIKES in the range from -70°C to +20°C

Martti Heinonen (Corresponding Author), Davor Zvizdic, Danijel Sestan

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Abstract

The first European humidity key comparison EURAMET-T.K6 was completed in 2008, and it covered the dew-point temperature range from -50°C to +20°C. Both LPM and MIKES participated in the comparison, but a new low dew-point generator was introduced at LPM as a result of progress in the EUROMET P912 project. To extend the range of available comparison evidence down to -70°C and to study the validity of improved uncertainties of LPM, a bilateral comparison was carried out between LPM and MIKES in 2009-2010. The applied comparison procedure was similar to that applied in EURAMET-T.K6. However, only one transfer standard was used instead of two units and the measurement point -70°C was added in the measurement scheme. The results show that the bilateral equivalence between LPM and MIKES is between (0.00 ± 0.06)°C and (0.02 ± 0.08)°C in the range from -50°C to + 20°C and (0.01 ± 0.10)°C at -70°C. Using MIKES results as the link to the EURAMET.T-K6, it is shown that the difference between the results obtained with the new LPM dew-point temperature standard and the EURAMET Comparison Reference Values is between (-0.02 ± 0.08)°C at 20°C and (+ 0.02 ± 0.07)° C at -50°C.
Original languageEnglish
Pages (from-to)1451-1457
Number of pages6
JournalInternational Journal of Thermophysics
Volume33
Issue number8-9
DOIs
Publication statusPublished - 2012
MoE publication typeA1 Journal article-refereed

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dew point
temperature
equivalence
humidity
generators

Keywords

  • dew-point temperature
  • humidity

Cite this

@article{7fbc89c055544f9f9964a19d92e75374,
title = "Intercomparison of the dew-point temperature realizations at LPM and MIKES in the range from -70°C to +20°C",
abstract = "The first European humidity key comparison EURAMET-T.K6 was completed in 2008, and it covered the dew-point temperature range from -50°C to +20°C. Both LPM and MIKES participated in the comparison, but a new low dew-point generator was introduced at LPM as a result of progress in the EUROMET P912 project. To extend the range of available comparison evidence down to -70°C and to study the validity of improved uncertainties of LPM, a bilateral comparison was carried out between LPM and MIKES in 2009-2010. The applied comparison procedure was similar to that applied in EURAMET-T.K6. However, only one transfer standard was used instead of two units and the measurement point -70°C was added in the measurement scheme. The results show that the bilateral equivalence between LPM and MIKES is between (0.00 ± 0.06)°C and (0.02 ± 0.08)°C in the range from -50°C to + 20°C and (0.01 ± 0.10)°C at -70°C. Using MIKES results as the link to the EURAMET.T-K6, it is shown that the difference between the results obtained with the new LPM dew-point temperature standard and the EURAMET Comparison Reference Values is between (-0.02 ± 0.08)°C at 20°C and (+ 0.02 ± 0.07)° C at -50°C.",
keywords = "dew-point temperature, humidity",
author = "Martti Heinonen and Davor Zvizdic and Danijel Sestan",
year = "2012",
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Intercomparison of the dew-point temperature realizations at LPM and MIKES in the range from -70°C to +20°C. / Heinonen, Martti (Corresponding Author); Zvizdic, Davor; Sestan, Danijel.

In: International Journal of Thermophysics, Vol. 33, No. 8-9, 2012, p. 1451-1457.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Intercomparison of the dew-point temperature realizations at LPM and MIKES in the range from -70°C to +20°C

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AU - Zvizdic, Davor

AU - Sestan, Danijel

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