Advantages of fiber infrared thermometer
Fiber optic infrared thermometer is a type of infrared thermometer. Also known as fiber optic sensing thermometer, for ordinary infrared thermometers, the main principle is to detect the surface temperature of an object by sensing the infrared emitted by the object itself in a non-contact manner. For fiber optic infrared thermometers, the difference between them and ordinary infrared thermometers is that they transmit infrared rays to the sensor through fiber optics, which can separate the optical system and circuit system of the thermometer.
Principle of Fiber Optic Infrared Thermometer
Infrared radiation is the most widespread type of electromagnetic wave radiation that exists in nature. It is based on the fact that any object in a conventional environment will generate its own molecules and atoms in irregular motion, constantly radiating thermal infrared energy. The more intense the movement of molecules and atoms, the greater the radiation energy, and vice versa, the smaller the radiation energy. Objects with temperatures above absolute zero will emit infrared radiation due to their own molecular motion.
Therefore, by measuring the infrared energy emitted by an object itself, its surface temperature can be accurately measured, which is the objective basis for infrared radiation temperature measurement. Infrared energy is focused on the photoelectric detector and converted into corresponding electrical signals. The signal is converted into the temperature value of the tested target after being calibrated by the amplifier and signal processing circuit according to the internal algorithm of the instrument and the target emissivity. A fiber optic infrared thermometer is a device that transmits light through a fiber optic to a sensor, rather than being directly focused by a lens onto the sensor. The other principles are the same as ordinary infrared thermometers.
Advantages of Fiber Optic Infrared Thermometer
1. Due to the separation of the optical system and circuit system, the optical system of the thermometer can be installed in a high-temperature environment (capable of withstanding 200 ° C on-site environment) in industrial field applications, and can work stably online for a long time. Due to the complete absence of electricity in the optical system, the industrial site installed is completely explosion-proof. The circuit part of the thermometer can be installed indoors or away from high temperature sites, connected through optical fibers and optical paths, completely avoiding the interference of high temperature on the instrument's temperature measurement.
2. Due to the fact that the infrared signal of the fiber optic infrared thermometer is transmitted to the sensor through a special material infrared fiber, only the spot with the size of the fiber cross-section can be transmitted to the sensor through the fiber when the optical path is focused on the fiber. This avoids the impact of large area of light directly focusing on the sensor and baking the sensor on the stability and lifespan of the sensor. Moreover, infrared optical fibers are made of special materials, allowing only the desired infrared band to pass through the fiber, further reducing the baking of light on the sensor. Therefore, light infrared thermometers have better stability and longer service life compared to integrated infrared thermometers.
