RTD Calculator - PT100/500/1000/2000


The calculator uses the following equation and coefficients.(Callendar-Van Dusen Equation)


\[ R = R_0 \left[1 + A t + B t^2 + C (t - 100) t^3\right] \]

PT-392 Coefficients

Temperature Range R0 A B C
-40 °C to 0 °C 100.00 3.9827E-3 -5.875E-7 -4.171E-12
0 °C to 540 °C 100.00 3.9827E-3 -5.875E-7 0

PT-385 Coefficients

Temperature Range R0 A B C
-200 °C to 0 °C 100.00 3.9083E-3 -5.775E-7 -4.183E-12
0 °C to 540 °C 100.00 3.9083E-3 -5.775E-7 0

R0 = Nominal thermometer resistance at 0 °C
A, B, C = equation coefficients obtained from the standards listed below.

Calculated values and the PT-100 equation are from the following standards: IEC 60751:2008, ASTM E1137-08(2020), and JIS C 1604:1997.