1. Whether the temperature of the measured object needs to be recorded,
Alarm and automatic control, whether long-distance measurement and transmission are required;
2. The size and accuracy requirements of the temperature measurement range;
3. Whether the size of the temperature measuring element is appropriate;
4. When the temperature of the measured object changes with time, whether the hysteresis of the temperature measuring element can meet the temperature measurement requirements;
5. Whether the environmental conditions of the measured object damage the temperature measuring element;
6. If the price is guaranteed, is it convenient to use.