REALIZATION OF THE ITS-90 FOR RANGE 232 °C – 962 °C ON KE LP4 AT METROLOGY-LIPI

• Abstract:

  The realization of ITS-90 has been done at Metrology-LIPI using the radiation thermometer monochromatic KE LP4 80-59 over a temperature range 232 - 962 ° C and wavelength λ = 1.57 µm. The method used is Sakuma-Hattori method using fixed-point blackbody tin, aluminum and silver. The value of the uncertainty of the KE LP4 80-59 at the temperature range for the level of confidence of 95% and a coverage factor of k = 2, is expressed by the equation: U(t) = 1.067461375 - 0,008000541 · t + 2,586471 · 10^-5 · t² -3,33928 · 10^-8 · t³ + 1,497270 · 10^-12 · t⁴.
• Keywords:

  ITS-90 realization, Sakuma hattori method, radiation, thermometer, monochromatic
• Download:

  IMEKO-WC-2015-TC12-261.pdf
• DOI:

  _unreg_wc-2015.261

Event details: