Advertisement

A New Primary Dew-Point Generator at TUBITAK UME

  • S. Oğuz Aytekin
  • N. Karaböce
  • M. Heinonen
  • H. Sairanen
TEMPMEKO 2016
  • 81 Downloads
Part of the following topical collections:
  1. TEMPMEKO 2016: Selected Papers of the 12th International Symposium on Temperature, Humidity, Moisture and Thermal Measurements in Industry and Science

Abstract

An implementation of a new low-range primary humidity generator as a part of an international collaboration between TUBITAK UME and VTT MIKES was initiated as a EURAMET Project Number 1259. The dew-point generator was designed and constructed within the scope of the cooperation between TUBITAK UME and VTT MIKES in order to extend the dew-point temperature measurement capability of Humidity Laboratory of TUBITAK UME down to − 80 °C. The system was thoroughly characterized and validated at TUBITAK UME to support the evidence for dew-point temperature uncertainties. The new generator has a capability of operating in the range of − 80 °C to +10 °C, but at the moment, it was characterized down to − 60 °C. The core of the generator system is a saturator which is fully immersed in a liquid bath. Dry air is supplied to the saturator through a temperature-controlled pre-saturator. The operation of the system is based on the single-pressure generation method with a single pass, i.e., the dew-point temperature is only controlled by the saturator temperature, and the humidity-controlled air is not returned to the system after leaving of the saturator. The metrological performance of the saturator was investigated thoroughly at both National Metrology Institutes. The pre-saturator was also tested using a thermostatic bath at VTT MIKES prior to sending them to TUBITAK UME. This paper describes the principle and design of the generator in detail. The dew-point measurement system and the corresponding uncertainty analysis of the dew-point temperature scale realized with the generator in the range from − 60 °C to 10 °C is also presented.

Keywords

Dew-point generator Humidity standard Saturator 

References

  1. 1.
    P. Wiederhold, Water Vapor Measurement, Methods and Instrumentation (Marcel Dekker Inc, New York, 1997)Google Scholar
  2. 2.
    D. Zvizdic, M. Heinonen, D. Sestan, Int. J. Thermophys. 33, 1536 (2012)ADSCrossRefGoogle Scholar
  3. 3.
    D. Zvizdic, M. Heinonen, T. Veliki, D. Sestan, in Proceedings XIX IMEKO World Congress on Fundamental and Applied Metrology, Lisbon, Portugal (2009), pp. 1567–1570Google Scholar
  4. 4.
    D. Hudoklin, J. Drnovsek, Int. J. Thermophys. 29, 1652 (2008)ADSCrossRefGoogle Scholar
  5. 5.
    J. Nielsen, M.J. de Groot, Metrologia 39, 3 (2004)Google Scholar
  6. 6.
    B. Blanquart, B. Cretinon, Y. Hermier, in Proceedings of 4th International Symposium on Humidity and Moisture, Taipei, Taiwan (2002), pp. 26–32Google Scholar
  7. 7.
    M. Heinonen, Measurement 17, 183 (1996)CrossRefGoogle Scholar
  8. 8.
    M. Stevens, S.A. Bell, Meas. Sci. Technol. 3, 943 (1990)ADSCrossRefGoogle Scholar
  9. 9.
    D. Sonntag, Z. Meteorol. 40, 340 (1990)Google Scholar
  10. 10.
    D. Sonntag, Papers and Abstracts from the Third International Symposium on Humidity & Moisture, vol 1, Teddington, National Physical Laboratory, 93 (1998)Google Scholar
  11. 11.
    B. Hardy, Papers and Abstracts from the Third International Symposium on Humidity & Moisture, vol. 1, 214, Teddington, National Physical Laboratory (1998)Google Scholar
  12. 12.
    M. Heinonen, Papers and Abstracts from the 8th International Symposium on Temperature and Thermal Measurements in Industry and Science, vol 2, 609, Berlin, (2001)Google Scholar
  13. 13.
    S. Uğur, A. Uytun, V. C. Fernicola, M. Banfo, Papers and Abstracts from the 9th International Symposium on Temperature and Thermal Measurements in Industry and Science, vol 2, 1025, Dubrovnik (2004)Google Scholar
  14. 14.
    M. Heinonen, S. Oğuz Aytekin, A. Uytun, Int. J. Thermophys. 29, 1678 (2008)ADSCrossRefGoogle Scholar
  15. 15.
    M. Heinonen, M. Anagnostou, S. Bell, M. Stevens, R. Benyon, R.A. Bergerud, J. Bojkovski, R. Bosma, J. Nielsen, N. Böse, P. Cromwell, A. Kartal Doğan, S. Oğuz Aytekin, A. Uytun, V. Fernicola, K. Flakiewicz, B. Blanquart, D. Hudoklin, P. Jacobson, A. Kentved, I. Lóio, G. Mamontov, A. Masarykova, H. Mitter, R. Mnguni, J. Otych, A. Steiner, N.S. Zsófia, D. Zvizdic, Int. J. Thermophys. 33, 1422 (2012)ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.TUBITAK Gebze YerleskesiTUBITAK UMEGebzeTurkey
  2. 2.Centre for Metrology MIKESVTT Technical Research Centre of FinlandEspooFinland

Personalised recommendations