Thermistor is a reference instrument

Thermal resistance is not only widely used in industrial temperature measurement, but also made into a standard reference instrument. However, due to his temperature measurement range, his application is limited to a certain extent. The temperature measurement principle of thermoelectric resistance is based on the characteristic that the resistance value of a conductor or semiconductor changes with temperature. It has many advantages, such as the ability to transmit electrical signals remotely, high sensitivity, strong stability, good interchangeability, and accuracy. However, it requires power excitation and cannot measure temperature changes instantaneously. Industrial thermistors generally use Pt100, Pt10, Cu50, Cu100. The temperature measurement range of platinum thermistors is generally -200-800 ℃, while copper thermistors are -40-140 ℃. Thermistors have the same distinguishing type as thermocouples, but they do not require compensating wires and are cheaper than thermocouples.