1. Due to the separation of the optical path system and the circuit system, the optical path system of the thermometer can be installed in a high temperature environment and can work stably online for a long time. Since the optical system does not contain electricity at all, the industrial site where it is installed is completely explosion-proof. The circuit part of the thermometer can be installed indoors or away from the high-temperature site, and connected to the optical path through an optical fiber, thus completely avoiding the interference of the high temperature at the temperature measurement site on the temperature measurement of the instrument.

2. Since the infrared signal of the optical fiber infrared thermometer is transmitted to the sensor through the infrared optical fiber of special materials, so that when the optical path is focused on the optical fiber, only the light spot with the cross-sectional size of the optical fiber can be transmitted to the sensor through the optical fiber, thus avoiding The large area of ​​light is directly focused on the sensor and the influence of the baking of the sensor on the working stability and life of the sensor. Moreover, the infrared optical fiber is made of special materials, and only the required infrared band can be selected to pass through the optical fiber, which further weakens the baking of the sensor by the light. Therefore, the light infrared thermometer has better stability and longer service life than the integrated infrared thermometer.