Does the Forehead Infrared Thermometer measure the temperature accurately? Is there radiation?

1. Using a Forehead Infrared Thermometer to measure body temperature many times a day, will it be over-radiated?

Will not.

Almost any object emits infrared rays (you can't see it or touch it, because its frequency range is outside the visible frequency range of the human eye). When Uncle Security takes the forehead infrared thermometer and nods at your forehead, the sensor in the gun can convert the infrared radiation signal into an electrical signal according to the infrared energy emitted by your forehead, and then pass the amplifier and signal processing circuit, and follow After a certain algorithm and target emissivity are corrected, it can finally be converted into the temperature value of the measured target.

2. How does the forehead infrared thermometer calculate the body temperature?

Generally, the infrared wavelength emitted by human body temperature (36℃~37℃) is 9~13 microns. Different temperature measurement locations have different standard temperature ranges, such as:

Anus (36.6℃~38℃)

Oral cavity (35.5℃~37.5℃)

Underarm (34.7℃~37.3℃)

Cochlea (35.8℃~38℃)

Forehead (35.8℃~37.8℃)

According to this principle, accurate body temperature can be displayed by correcting the temperature difference between the forehead and the actual body temperature by detecting the surface temperature of the human forehead. Generally, the middle part of the eyes is the radioactive source closest to the normal body temperature for measuring the body surface temperature. It is most suitable to place the forehead gun at a distance of 3-5cm to measure the temperature (usually the thickness of an adult's index finger is sufficient, and direct contact is not allowed. Forehead).

Generally speaking, compared with mercury thermometers, although the accuracy of the forehead thermometer is a little worse, it is convenient and easy to use, and it is sufficient for screening.