What are the main components of the handheld infrared thermometer
Temperature is a very important thermal parameter in the industrial production process, which directly affects the quality and performance of the product. Compared with traditional contact instruments, the non-contact handheld infrared thermometer mentioned in the title is easy to use, fast in response, high in sensitivity, wide in temperature measurement range, and can realize non-contact online continuous measurement. However, traditional contact temperature measuring instruments need to exchange heat with the measured substance, and it takes a period of time to reach thermal equilibrium, so there is a hysteresis phenomenon in temperature measurement.
The structure of the handheld infrared thermometer
Its structure mainly consists of photodetector, optical system, signal amplifier, signal processing, display output and other parts.
The principle of handheld infrared thermometer
When the infrared thermometer measures the target temperature, it first measures the infrared radiation of the target temperature within its band range, and then the thermometer calculates the measured target temperature. The process is that its optical system converges the infrared radiation energy of the target in its field of view. At this time, the infrared radiation energy is focused on the photodetector and converted into a corresponding electrical signal. This signal will pass through the signal amplifier and signal amplifier.
The selection principle of infrared thermometer; first, the temperature measurement requirements must be clarified, such as temperature measurement range, accuracy, size of the measured object, measurement distance, surface emissivity of the measured object, working environment of the measured object and corresponding speed. Secondly, select a non-contact thermometer suitable for the requirements among many infrared thermometers. Finally, while meeting the above requirements, choose the best combination of performance, function, and price. In addition, consider its ease of use, post-maintenance, and calibration performance.
