Temperature sensor refers to a sensor that can sense temperature and convert it into a usable output signal. Temperature sensor is the core of temperature measuring instrument, a variety of. According to the measurement method, it can be divided into contact type and non-contact type two categories, according to the characteristics of sensor materials and electronic components into thermal resistance and thermocouple two categories.
Note for selecting temperature sensor:
1. Whether the environmental conditions of the measured object are harmful to the temperature measuring element.
2. Whether the temperature of the measured object needs recording, alarm and automatic control, whether it needs remote measurement and transmission.
3. When the temperature of the measured object changes with time, the lag of the temperature measuring element can adapt to the temperature measurement requirements.
4. the size of the temperature range and accuracy requirements.
5.temperature measuring element size is appropriate.