Electrical Resistance Thermometer

Electrical Resistance Thermometer Points : Electrical Resistance Thermometer, Principle of Electrical Resistance Thermometer, Material of Electrical Resistance Thermometer Principle The resistance of the conductor changes when its temperature is changed. This property is utilized for measurement of temperature in electrical resistance thermometer.

The requirements of a conductor material to be used in these thermometers are:
(i) The change in resistance of material per unit change in temperature should be as large as possible.
(ii) The resistance of materials should have a continuous and stable relationship with temperature. Materials The materials commonly used for resistance thermometers are listed in the following table along with their salient properties: