1, whether the temperature of the object under test shall be record, alarm and automatic control, and whether you need to distance measurement and transmission;

2, the size of the temperature measurement range and accuracy;

3, temperature measuring element size is proper;

4, in the occasion of measured object temperature change over time, the lagging of the temperature measuring device can meet the requirements for temperature measurement;

5, the object to be tested environment conditions on the temperature measuring components for damage;

6 prices, such as insurance, will it be convenient for use.