Introduction of types and working principles of infrared thermometers

Infrared thermometer is a kind of temperature measuring instrument based on infrared ray, which measures the temperature through the length of infrared ray. Infrared thermometer is a measuring instrument, which can realize short-distance measurement and long-distance measurement, and can be used in various environments. There are many kinds of infrared thermometers. Do you know what kinds of infrared thermometers there are? The following small series will introduce the types and working principles of infrared thermometers for everyone.

1, types of infrared temperature measuring instruments

There are three main types of infrared thermometers: infrared thermal imager, infrared thermal imager and infrared thermometer (point thermometer). In the 1960s, China successfully developed the first infrared thermometer, and since the early 1980s, it has successively produced small target and long-distance thermometers suitable for the production characteristics of the power industry, such as Xiguang IRT- 1200D, HCW-Ⅲ, HCW-ⅴ, etc. YHCW-9400 model; WHD40 15 (double aiming, target d? 40mm, up to 15? M), WFHX330 (optical aiming, target d? 50? Well, to 30? M).PM-20, 30, 40, 50, HAS-20 1 thermometer made in America; TPT20, 30, 40 and 50 of AGA company in Sweden are also widely used. DL-500？ E can be applied to 1 10 ~ 500? On the equipment of kV substation, the image is clear and the temperature is accurate. Infrared thermal imager, mainly Japanese TVS-2000, TVS- 100, American PM-250, Sweden AGA-? THV5 10、550、570。 The domestic infrared thermal imager was successfully developed in Kunming, realizing localization.

2. The working principle of infrared thermometer

Understanding the working principle, technical indicators, environmental working conditions and operation and maintenance of infrared thermometer is the basis for users to correctly select and use infrared thermometer. The optical system collects the infrared radiation energy of the target in its field of view, and the size of the field of view is determined by the positions of the optical components and the thermometer. Infrared energy is focused on the photodetector and converted into corresponding electrical signals. The signal is corrected by the amplifier and signal processing circuit according to the algorithm inside the instrument and the target emissivity, and then converted into the temperature value of the measured target. In addition, the environmental conditions of the target and thermometer, such as temperature, atmosphere, pollution and interference, should be considered and the correction methods should be considered.

All objects whose temperature is higher than 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 the object itself, its surface temperature can be accurately measured, which is the objective basis of infrared radiation temperature measurement.

The above is the introduction of the types and working principles of infrared thermometers. Do you know the principle of infrared thermometer now? This infrared thermometer was made in China in the early 1980s. This is a thermometer, which can also be used in shops. With the development and progress of the times, infrared thermometers have been widely used in our lives. The working principle of infrared thermometer is very simple, mainly based on optical system, using infrared radiation energy. We also need to pay attention to radiation when using infrared thermometer.

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