KazStandard Primary Dew/Frost Point Generator

Assylbek Zhumagali; Temirbolat Akimzhanov; Raiymbek Zhumagali; Sultanbek Smagulov; Bahytkul Baihozhaeva

doi:10.2478/msr-2025-0021

Abstract

This article presents studies on the dew point/frost temperature generator using the single-pressure (1-P) and single-temperature (1-T) method first developed by KazStandard to improve the calibration accuracy of dew point hygrometers. The method of applying the dew point temperature scale is based on the supply of humid air with high instability through a thermostatic saturator, which enables increased measurement accuracy. The characteristics include a study of the saturator's efficiency, the stability of the dew point temperature reproduction and a comparison with a calibrated dew point hygrometer. The study was conducted in the dew point temperature range from −50°C to 20°C, and the sources of measurement uncertainty were analyzed.

References

Zhumagali, A. K. (2024). On the modernization of state gas humidity standards of the Republic of Kazakhstan. Kompetentnosť (Competency), 4, 20. (in Russian) https://doi.org/10.24412/1993-8780-2024-4-20-23
Search in Google Scholar Back to article
Meyer, C. W., Hodges, J. T., Hyland, R. W., Scace, G. E., Valencia-Rodriguez, J., Whetstone, J. R. (2010). The second-generation NIST standard hygrometer. Metrologia, 47 (3), 192. https://doi.org/10.1088/0026-1394/47/3/010
Search in Google Scholar Back to article
Heinonen, M. (1996). The CMA humidity standard. Measurement, 17 (3), 183–188. https://doi.org/10.1016/0263-2241(96)00026-7
Search in Google Scholar Back to article
Heinonen, M. (1999). Investigation of the dew-point temperature scale maintained at the MIKES. Measurement Science and Technology, 10 (1), 36. https://doi.org/10.1088/0957-0233/10/1/010
Search in Google Scholar Back to article
Oğuz Aytekin, S., Karaböce, N., Heinonen, M., Sairanen, H. (2018). A new primary dew-point generator at TUBITAK UME. International Journal of Thermophysics, 39, 62. https://doi.org/10.1007/s10765-018-2375-2
Search in Google Scholar Back to article
Zvizdic, D., Heinonen, M., Sestan, D. (2012). New primary dew-point generators at HMI/FSB-LPM in the range from −70 °C to +60 °C. International Journal of Thermophysics, 33, 1536–1549. https://doi.org/10.1007/s10765-012-1211-3
Search in Google Scholar Back to article
Sestan, D., Zvizdic, D., Sariri, K. (2018). New submersed chamber for calibration of relative humidity instruments at HMI/FSB-LPM. International Journal of Thermophysics, 39, 27. https://doi.org/10.1007/s10765-017-2348-x
Search in Google Scholar Back to article
Abd El-Galil, D. M., Mahmoud, E. (2016). NIS two-pressure humidity generator. International Journal of Metrology and Quality Engineering, 7 (3), 303. https://doi.org/10.1051/ijmqe/2016012
Search in Google Scholar Back to article
Tistomo, A. S., Achmadi, A., Rifai, I. A. (2014). Characterization of KIM LIPI’s relative humidity standard. MAPAN, 29, 51–55. https://doi.org/10.1007/s12647-013-0055-z
Search in Google Scholar Back to article
Meyer, C. W., Miller, W. W., Ripple, D. C., Scace, G. E. (2008). Performance and validation tests on the NIST hybrid humidity generator. International Journal of Thermophysics, 29, 1606–1614. https://doi.org/10.1007/s10765-007-0342-4
Search in Google Scholar Back to article
Meyer, C. W., Miller, W. W., Ripple, D. C., Scace, G. E. (2009). Design and performance of the new NIST hybrid humidity generator. NCSLI Measure, 4 (2), 28–36. https://doi.org/10.1080/19315775.2009.11721470
Search in Google Scholar Back to article
Heinonen, M., Anagnostou, M., Bell, S. et al. (2012). Investigation of the equivalence of national dew-point temperature realizations in the −50 °C to +20 °C range. International Journal of Thermophysics, 33, 1422–1437. https://doi.org/10.1007/s10765-011-0950-x
Search in Google Scholar Back to article
Constantin, B., Chelidze, V., Marina, D., Ibraev, M., Baghirov, A., Hodzic, N., Corman, A. (2019). Calibration of industrial platinum resistance thermometers in thermostats (−40° C to 420° C). Metrologia, 56, 03003. https://doi.org/10.1088/0026-1394/56/1A/03003
Search in Google Scholar Back to article
Hudoklin, D., Bojkovski, J., Nielsen, J., Drnovšek, J. (2008). Design and validation of a new primary standard for calibration of the top-end humidity sensors. Measurement, 41 (9), 950–959. https://doi.org/10.1016/j.measurement.2008.01.006
Search in Google Scholar Back to article
Hudoklin, D., Šetina, J., Drnovšek, J. (2012). Uncertainty evaluation of the new setup for measurement of water-vapor permeation rate by a dew-point sensor. International Journal of Thermophysics, 33, 1595–1605. https://doi.org/10.1007/s10765-012-1213-1
Search in Google Scholar Back to article
Sairanen, H., Heinonen, M., Högström, R., Salminen, J., Saxholm, S., Kajastie, H. (2018). Low-pressure and low-temperature dew/frost-point generator. International Journal of Thermophysics, 39 (9), 104. https://doi.org/10.1007/s10765-018-2425-9
Search in Google Scholar Back to article
Wettstein, S., Mutter, D. (2018). Design and validation of the MBW standard humidity generators. International Journal of Thermophysics, 39 (10), 116. https://doi.org/10.1007/s10765-018-2436-6
Search in Google Scholar Back to article

KazStandard Primary Dew/Frost Point Generator

Abstract

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