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Calibrate Steinhart-Hart Coefficients for Thermistors
Rev B. Revised Oct 2012
Figure 1 A 10k NTC thernister T R curve
NTC (Negative Temperature Coefficient) Thermistor's T R curve can be described in
thermistors can be used in LDC500, LDC501 and equations. The most commonly used form is the
LDC502 TEC controllers. They have the advantage SteinhartHart Equation shown below:
of a very high sensitivity to temperature changes,
but the disadvantage of an aggressively nonlinear 1 3
characteristic. The following curve shows the A Bln( Rt) C ( ln( Rt) )
resistance of a typical NTC thermistor device over a T
temperature range from 0 to 50