Technical explanation and answers of infrared thermometer

Nov 11, 2023

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Technical explanation and answers of infrared thermometer

 

1. Why use non-contact infrared thermometer? Shenzhen Yuanhengtong Technology Co., Ltd.
Non-contact infrared thermometers use infrared technology to quickly and easily measure the surface temperature of objects. Quickly obtain temperature readings without mechanical contact with the object being measured. Just aim, press the trigger and read the temperature data on the LCD display. Infrared thermometers are lightweight, small, easy to use, and can reliably measure hot, dangerous, or hard-to-reach objects without contaminating or damaging the object being measured. Infrared thermometers can take several readings per second, while contact thermometers take several minutes per second.


2. How does an infrared thermometer work? Shenzhen Yuanhengtong Technology Co., Ltd.
Infrared thermometers receive invisible infrared energy emitted by a variety of objects themselves. Infrared radiation is part of the electromagnetic spectrum, which includes radio waves, microwaves, visible light, ultraviolet, R-rays and X-rays. Infrared is located between visible light and radio waves. Infrared wavelengths are commonly expressed in microns. The wavelength range is 0.7 microns - 1000 microns. In fact, the 0.7 microns - 14 micron band is used in infrared thermometers.


4. How to measure temperature with infrared thermometer?
1. It only measures the surface temperature, and the infrared thermometer cannot measure the internal temperature.


2. Temperature measurement cannot be carried out through glass. Glass has very special reflection and transmission characteristics, and infrared temperature readings are not allowed. But the temperature can be measured through the infrared window. Infrared thermometers are not used for temperature measurement of bright or polished metal surfaces (stainless steel, aluminum, etc.).

3. Locate hot spots. To find hot spots, the instrument aims at the target, and then scans up and down on the target until the hot spots are determined.


4. Pay attention to environmental conditions: steam, dust, smoke, etc. It blocks the optical system of the instrument and affects temperature measurement.


5. Ambient temperature. If the infrared thermometer is suddenly exposed to an ambient temperature difference of 20 degrees or higher, allow the instrument to adjust to the new ambient temperature within 20 minutes.

 

3 digital thermometer

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