The temperature measurement sensitive component is made by the resistance band value of some conductors or semiconductor materials as a function of temperature, which is a thermal resistance thermometer or a semiconductor thermistor thermometer.
Thermistor materials used for temperature measurement should meet the following requirements:
1. Stable chemical and physical properties in the temperature range;
2. Reproducible;
3. The temperature coefficient of resistance is large, and high-sensitivity components can be obtained;
4. The resistivity is large, and a small volume component can be obtained;
5. The resistance-temperature characteristic is as close to linear as possible;
6. Low price