Temperature measurement using Thermistor

Temperature measurement using Thermistor

Initially, Thermistor is placed in the environment whose temperature is to be measured. Then, Thermistor is connected in a series simple circuit consisting of battery and micro-ammeter as shown below.

Any change in temperature causes a change in resistance of Thermistor. Hence, corresponding change in circuit current. By directly calibrating micro ammeter interms of temperature, we can measure temperature.


  • Low cost
  • Sensitivity is high
  • Small in size.
  • Good stability.
  • High output signal.


  • Non-linear output is seen.
  • Not suitable for high temperature measurement.
  • Requires external power supply.


  • Used for measurement and control of temperature.
  • Used for providing time delay.
  • Used as temperature compensation element in electronic equipments.
  • Used for measuring thermal conductivity of a medium.