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Summary: What should be paid attention to when installing the infrared thermometer? The infrared thermometer cannot be installed where the temperature, humidity, stray light, impact, etc. exceed the designated purchase location.
Release time:
2021/02/19
Installationinfrared thermometerShould pay attention to what? The infrared thermometer cannot be installed where the temperature, humidity, stray light, impact, etc. exceed the designated place of purchase. Infrared thermometer has a certain installation position. These places are definitely places for thermometers. Performance has a great impact, so you need to pay attention to the following points: First, the sun, heating elements, welding lights and other places that may enter the strong light, you should try not to install infrared thermometers, and take preventive measures when using them. Measures must be taken, otherwise the infrared thermometer may not work properly, and in severe cases may damage the photoelectric equipment. Second, the base of the infrared thermometer should be firm. Avoid safety in places with large shaking and vibration, or take appropriate anti-vibration measures according to the measurement accuracy, otherwise the optical axis will deviate or the detection position will be incorrect. If the base is unstable, the thermometer should be installed on the foundation from the fixed frame of the thermometer door.
Avoid installing thermometers or taking protective measures where there are a lot of water droplets and oil, otherwise they will stick to the lens of the infrared thermometer light source and photoelectric receiving device, not only scattering the beam, but also scattering the beam. Dust in the air is also easily attracted, which may cause wrong actions. Avoid installation or sealing measures in places with more water vapor or dust. Water vapor or dust can easily condense on the lens surface of the thermometer and cause light flux attenuation and scattering. Even in the absence of water vapor, the same phenomenon occurs when the ambient temperature changes sharply. Of course, one thing we need to pay attention to is to avoid installation in places that are difficult to adjust and maintain. Because the adjustment of the optical axis and the cleaning of the lens surface are frequent tasks, if it is installed in a place that is difficult to adjust and maintain, or the adjustment is incorrect. Or poor maintenance can easily lead to errors. Similarly, the thermometer must be installed as much as possible to avoid installation near strong electric equipment, otherwise the electrical part of the thermometer is easily affected by external interference.
The detection principle of human infrared thermometer: due to the thermal motion of molecules, the temperature in nature is higher than the absolute temperature (-273.15°C) of all objects continue to radiate electromagnetic waves to the surrounding space, including the infrared band radiation energy density is proportional to the fourth power of the temperature of the object itself. A small temperature change will cause a significant change in the radiant energy, so the sensitivity of measuring the temperature of an object using infrared radiation is very high. The infrared radiation characteristics of the human body are closely related to its surface temperature. The main radiation wavelength of the human body is9〜10μmof infrared. By measuring the infrared energy of the human body itself, the surface temperature of the infrared thermometer can be accurately measured. Since light in this wavelength range is not absorbed by the air, the infrared energy radiated by the human body can be used to accurately measure the surface temperature of the human body.
The advantage of infrared thermometer is non-contact, fast measurement, and can be used in1Complete the test in seconds. Since the infrared thermometer only receives the infrared radiation energy emitted by the human body, and there are no other physical and chemical factors acting on the human body, it is harmless to the human body. The human body infrared thermometer is composed of an infrared sensor and a display alarm box, which is connected by a special five-core cable. When installing, fix the infrared thermometer sensor with a bracket beside the passage or door, so that the distance between the forehead of the tested person and the infrared sensor is30cm. Place a table next to it and place a box to display the alarm.
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