Thermistor calculation

Let’s consider the following divider bridge. The high side is a resistor and the low side is a thermistor.

thermistor

The resistance of the thermistor can be calculated with the following formula:

 R = R_0 . \exp ( \beta. ( \frac {1}{T+273.15} - \frac {1}{T_0+273.15} ) )

Where :

  • T_0 is the reference temperature [°C]
  • T is the target temperature [°C]
  • \beta is the thermistor Beta Value [K]
  • R_0 is the resistance at reference temperature [Ohms]

thermistor_graph

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