Comparison of the radiation temperature scales between MIKES and PTB

M. Ojanen, K. Anhalt, J. Hartmann, S. Schiller, T. Weckström, P. Kärhä, M. Heinonen, E. Ikonen

    Research output: Contribution to journalArticleScientificpeer-review

    3 Citations (Scopus)


    The radiation temperature scales of PTB and MIKES were compared in the range of 1570-2770 K using four filter radiometers of MIKES, one filter radiometer of PTB, and linear radiation thermometers of both MIKES and PTB. The agreement was partial: two filter radiometers and the linear radiation thermometer of MIKES agreed well with the equipment of PTB, while two filter radiometers deviated from the other equipment. To get a deeper understanding of the reasons of the deviation, the results were studied in terms of both temperature and radiance. The deviation was found constant in terms of radiance. A correction factor was calculated for the radiance level with help of a temperature fixed-point calibration. The use of the correction factor improved the results.

    Original languageEnglish
    Pages (from-to)183-189
    Number of pages7
    Issue number2
    Publication statusPublished - 2010
    MoE publication typeA1 Journal article-refereed


    • Filter radiometer
    • Intercomparison
    • Linear radiation thermometer
    • Radiation temperature scale


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