The main component of thermistor is semiconductor ceramic, which usually has stable performance. However, if it is used under high temperature and high load for a long time, its resistance value will drift slightly at any time, but it will not be too large.

The thermostat has zero drift and temperature drift:

With the increase of time, the time drift of the system is equivalent to the aging system. In this way, the structural characteristics of the system will change and drift.

Temperature drift causes zero point instability. It can be noted that the influence of temperature is a very important factor of zero drift and also a very difficult factor to control.

Stability refers to the annual drift of the reference voltage value of the thermistor, which is then converted to the temperature value according to the temperature voltage conversion coefficient, i.e. stability = ± △ V / S / year. The stability of linear thermistors is ± 0.05 ° C per year. This parameter describes the ability of the thermistor to maintain its original characteristics under different operating conditions.

To solve the temperature drift of thermistor:

There are two methods to solve the temperature drift of thermistor: hardware and software. Equipment methods include constant resistance method corresponding to series parallel connection of bridge arms, bridge thermistor compensation method, external bridge series parallel connection thermistor compensation method, double bridge compensation technology and triode compensation technology. The software method is to eliminate the displacement through the software program. This method is very practical for sensors with digital outputs. Customers can write through software, or when the thermistor is equipped with a digital display meter, they can also customize it by adjusting the digital display meter. Everything is very comfortable.