The main application fields of fiber optic infrared thermometer
Infrared thermometers are widely used in industry, and the most used ones are mainly portable infrared thermometers and online infrared thermometers. At present, with the maturity of fiber optic infrared thermometer technology and its increasingly prominent advantages in industrial sites, fiber optic infrared thermometers have gradually replaced the integrated infrared thermometers for online temperature measurement. In various occasions in the industrial field.
The current main application market of fiber optic infrared thermometer is in the industrial field. Because the integrated infrared thermometer has very strict requirements on the use environment, it is generally necessary to keep the instrument installed in a place where the ambient temperature does not exceed 50 degrees Celsius, otherwise the measured value will be distorted due to the influence of the temperature of the circuit components, and even the instrument will be damaged. Therefore, Generally, the integrated infrared thermometers used online in industrial sites are equipped with cooling protection measures such as water cooling jackets, which are troublesome to install and costly to use. The fiber optic infrared thermometer adopts a split design, and the optical system (that is, the optical probe) that is basically not affected by the temperature is installed on the temperature measurement site; the signal processing/display that is more demanding on the ambient temperature is installed far away from the measurement site. It can ensure that the signal processing/display is always working normally; the infrared signal received by the optical probe is transmitted to the signal processor for processing through an infrared optical fiber in the middle. In this way, the instrument has the stability and reliability of long-term work, and the installation is simple, without cooling measures such as water cooling, the use cost is low, and the equipment maintenance is also convenient.
Advantages of fiber optic infrared thermometer
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 (can withstand the field environment of 200 degrees) in industrial field applications, 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 A 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.
