Two point thermistor calibration

This calculator calculates R₂₅ and B for the thermistor model \( T=\frac1{\frac1{T_0}+\frac1{B} ln \frac{R}{R_0}}\) where T and To are absolute (K).

Use this calculator to determine R₂₅ and B from T,R pairs measured from either a thermistor or thermometer.

The model is an approximate one, and you will likely get different parameters for different measurement points... though hopefully only a small change. The best thing to do is to use data points towards each end of the intended operating range. It also helps if the first data point is close to 25°.

References / Links

Thermistor

Changes

Version	Date	Description
1.01	12/06/2015	Initial.
1.02
1.03
1.04
1.05

Inputs:

	T (°C)	R (Ω)
Measurements
Measurements

Results:
R₂₅
B