Features of the Handheld Infrared Thermometer
The temperature measurement of a handheld infrared thermometer is based on Planck's radiation law. By measuring the infrared radiation energy of the measured target and calibrating it with a blackbody, the stability of the measured target can be determined.
Infrared thermometers have the characteristics of non-contact measurement, fast response speed, and no disturbance to the temperature distribution field of the measured target. For temperature measurement of targets that cannot be measured by contact, moving targets, and targets with rapid temperature changes, infrared thermometers have their unique effects. It provides a new measurement method for the development of modern temperature measurement technology. Compared with traditional temperature measurement equipment, infrared thermometers have the advantages of convenience, accuracy, and safety.
All objects with temperatures above absolute zero are constantly emitting infrared radiation energy into the surrounding space. The magnitude and wavelength distribution of infrared radiation energy of an object are closely related to its surface temperature. Therefore, by measuring the infrared energy radiated by an object itself, its surface temperature can be accurately determined, which is the objective basis for infrared radiation temperature measurement.
The infrared thermometer consists of an optical system, a photodetector, a signal amplifier, signal processing, display output, and other components. The optical system concentrates the infrared radiation energy of the target within its field of view, and the size of the field of view is determined by the optical components and their positions of the thermometer. Infrared energy is focused on the photodetector and converted into corresponding electrical signals. The signal is amplified and processed by a signal processing circuit, and then converted into the temperature value of the measured target after being calibrated according to the algorithm and target emissivity of the instrument's internal therapy.
