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A STUDY OF INHOMOGENEITIES OF THERMOCOUPLES AND ITS CONTRIBUTION TO THE CALIBRATION UNCERTAINTY CALCULUS

M. A. P. Castanho, C. R. Baldo
  • Abstract:
    This paper presents a study on the measurement of thermocouple inhomogeneity and its contribution to the calculation of the uncertainty of thermocouple calibration. This study evaluated 26 thermocouples, including noble metal thermocouples (type S, R and B) and base metal thermocouples (type N, K, T and J). The measurements were carried out in alcohol, oil and salt baths, at temperatures from -40 ° C to 420 ° C. In this paper we propose a correlation of inhomogeneity value for each thermocouple type evaluated, considering the temperature range and immersion depth.
  • Keywords:
    thermocouple, inhomogeneities, calibration, uncertainty
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  • DOI:
    _unreg_wc-2012.TC12-O3

Event details:

  • IMEKO TC:
  • Event name:
    XX IMEKO World Congress
  • Title:

    Metrology for Green Growth

  • Place:
    Busan, REPUBLIC of KOREA
  • Time:
    09 September 2012 - 12 September 2012