This information is part of the Modelica Standard Library maintained by the Modelica Association.

From the temperature coefficient alpha20 at 20 degC (equals to 293.15 K) the parameter alphaRef at TRef

                      alpha20
alphaRef = -------------------------------
            1 + alpha20 * (TRef - 293.15)

is determined; using this value, actual resistance R with respect to the actual temperature T is calculated by

  R
------ = 1 + alphaRef * (T - TRef)
 RRef

where RRef is the resistance at the reference temperature TRef.

R = convertResistance(RRef, TRef, alpha20, T)

RRef	Type: Resistance (Ω) Description: Resistance at TRef
TRef	Type: Temperature (K) Description: Reference temperature
alpha20	Type: LinearTemperatureCoefficient (¹/K) Description: Temperature coefficient at 20 degC
T	Type: Temperature (K) Description: Actual temperature

R	Type: Resistance (Ω) Description: Actual resistance at T