Ten things to note when using a human body thermometer
1. Automatic long-distance large-scale temperature screening without contact with the person being tested.
When using a human body thermometer to measure temperature, it does not require close contact with the target being measured, such as an infrared spot thermometer or a forehead thermometer, for screening. When the human body thermometer performs body temperature screening, turn on the automatic tracking function of the full-screen/regional maximum temperature value, and the highest temperature point of the person passing by the screen will be automatically measured.
2. The person being tested cannot cover their entire face, otherwise the temperature screening will be inaccurate.
When measuring temperature, the person being measured through the screen cannot cover their face, especially their forehead. Human body thermometers passively receive infrared radiation emitted by objects. If your face is blocked by other objects, the detection results will be inaccurate.
3. There is a certain error in temperature measurement by human body thermometers. The error of high-precision human thermometers in body temperature screening is within ±0.3℃.
There are many factors that affect the temperature measurement of the human body thermometer, such as distance, material of the object being measured (such as excessive use of cosmetics, face covered by a mask), ambient temperature, etc. The accuracy of general human body thermometers is ±2%. According to infrared industry data, the XT236/IR236 human body thermometer of the top domestic infrared manufacturer GUIDE ("IR236 is an improved version of IR230"), InfiRay's AT300/600 human body thermometer (which also "supplies temperature measurement movement") and DALI's DW60-W human body thermometer are used for human body screening. The human body temperature measurement accuracy of the thermometer is within ±0.3 degrees Celsius.
4. The alarm function of the human body thermometer must be turned on.
Human body thermometers generally have a high temperature alarm function. Once the alarm temperature is set, when the temperature of someone in the detected crowd exceeds the alarm temperature (heating temperature), the device will issue an alarm to remind the user.
5. The human body thermometer should be installed indoors as much as possible to maintain the consistency of the environment.
It is recommended that the installation location be placed in a relatively stable environment. If conditions permit, the distance from the entrance and exit can be appropriately extended.
6. Professional temperature measurement parameters must be set.
In order to make human body temperature measurement more accurate, the corresponding temperature measurement parameters must also be adjusted, such as emissivity (recommended 0.98 for human body), ambient temperature, testing distance, etc.
7. Be careful to avoid strong light sources shining directly on the lens, which may cause damage to the human body thermometer.
The human body thermometer is a high-precision instrument. The human body thermometer cannot be pointed at strong light sources such as the sun and welding to measure temperature. Strong light sources will directly damage the infrared chip, causing irreparable damage to the human body thermometer.
8. Misunderstanding 1: Use the laser point of a handheld human body thermometer to measure temperature?
Some people may have used some industrial handheld human body thermometers. Some handheld infrared thermal imaging cameras can emit indicator laser points. Everyone should understand that the laser points are only for indication, not for temperature measurement. This has been explained before. Human body thermometers passively receive infrared rays rather than actively measure temperature.
9. Misunderstanding 2: Is the temperature measured by an infrared temperature measuring camera inaccurate?
The human body thermometer obtains the surface temperature of your body. Compared with the oral thermometer or ear thermometer, the human body temperature detected will be relatively lower. For example, your normal basal body temperature is 36.8 degrees. At an ambient temperature of 20 degrees, the measured skin temperature may be 34.5 degrees. If it is 6-8 degrees in winter now, the measured temperature may only be around 20 degrees. Therefore, try to measure the temperature indoors as much as possible, and be careful not to measure the temperature as soon as you enter from outside.
And more importantly, the main function of the infrared thermometer thermal imaging camera is to quickly screen the body temperature of a large number of people in a large area and quickly find those with high temperature and fever among the crowd.
10. Misunderstanding 3: Put the human thermometer behind the glass to measure the temperature?
Many people have a wrong understanding of human body thermometers. Since it is an image temperature measurement, it should be able to measure temperature through glass. This is wrong. Human body thermometers cannot measure temperature through glass.
