Can industrial infrared thermometer measure body temperature?
Firstly, we can make it clear that we cannot! Infrared thermometers are generally used to measure solid heat sources, such as the temperature of molding machine screws, heating coils, human bodies, etc. They sense the temperature through reflected laser beams.
The infrared forehead thermometer measures the surface temperature of the forehead, then corrects it through algorithms, and finally obtains the body temperature. However, changes in environmental temperature can cause variations in measured values. The accuracy of instruments also varies, and professional medical infrared thermometers have guaranteed accuracy, with an allowable error of 0.2 degrees for body temperature measurement under normal circumstances, otherwise it will lose its medical significance.
Industrial infrared thermometers are not recommended for medical use, but they can be used for screening purposes. Diagnosis still requires a doctor. The purpose of investigation is to identify high-risk suspected individuals and subsequently diagnose them through other means.
Of course, it is still necessary to have an infrared thermometer. It is at least much more accurate than industrial infrared thermometers. This accuracy is achieved at the expense of measuring range. Physically, the peak wavelength of infrared radiation energy varies with temperature.
What is the difference between infrared thermometers and industrial thermometers?
1. Measurement distance:
Infrared thermometers measure distances relatively close. Generally, infrared probes are used to measure at a distance of more than ten centimeters from the forehead. However, industrial thermometers require personnel safety for measurement, and the distance is much larger, ranging from a few centimeters near to several tens of meters far away.
2. Measurement range:
The range of infrared thermometers is generally between 3045 ℃, but the range of industrial thermometers is much larger, ranging from minus tens of degrees Celsius to over 3000 degrees Celsius.
3. Measurement accuracy:
Infrared thermometers are more accurate than industrial thermometers because they measure human body temperature and have a smaller measurement range, typically at 0.1 ℃.
Issues to be noted when using an infrared thermometer
1. Only measuring surface temperature, infrared thermometers cannot measure internal temperature.
2. Wavelength above 5um cannot be measured through quartz glass, as glass has unique reflection and transmission characteristics that do not allow for precise infrared temperature readings. But temperature can be measured through an infrared window. It is best not to use infrared thermometers for temperature measurement on bright or polished metal surfaces (such as stainless steel, aluminum, etc.).
3. To locate hotspots, the instrument aims at the target and then performs up and down scanning movements on the target until the hotspot is determined.
4. Pay attention to environmental conditions such as steam, dust, smoke, etc. It blocks the optical system of the instrument and affects accurate temperature measurement.
5. If the thermometer is suddenly exposed to an ambient temperature difference of 20 ℃ or higher, it is allowed to adjust to the new ambient temperature within 20 minutes.
