抄録
A reference function for JPt100 thermometers specified by the Japanese Industrial Standards, JIS C 1604 and JIS C 1606, is proposed based on the International Temperature Scale of 1990 (ITS-90) and a simple calibration method for JPt100 thermometers is discussed combining the reference function with a linear deviation function. It is pointed out some JPt100 thermometers have a high potential for such accurate as a few mK thermometry. The coefficients of the Callendar-Van Dusen's function, which is another conventional reference function of platinum resistance thermometers, are determined based on the ITS-90 and the function is compared with 3rd and 4th order polynomial functions of temperature.
