Affected by the COVID-19, people have to take temperature tests when entering public places such as subways and shopping malls. The instrument used by the staff to measure the body temperature is usually a gun-type thermometer, and it can be measured by pointing it at the forehead across the people, so it is also called the forehead gun.
But sometimes, the staff only holds the forehead gun to measure the temperature of the wrist. So, it’s not appropriate to call it just forehead gun.
Forehead gun measuring forehead, may not be accurate
Almost any object emits infrared rays outward, and the amount of energy contained in it is directly related to the temperature of the object. When the staff measure the temperature with the forehead gun through the forehead, the sensor can quickly measure the temperature of the skin based on the infrared energy emitted from the forehead.
What’s the advantage of forehead thermometer?
·As a non-contact tested tool. It can avoid cross infection.
·rapid temperature measurement
However, the disadvantages of the forehead temperature gun are also obvious.
It is easy to be affected by air temperature and wind speed.(for example, in cold windy days, using forehead temperature gun outside may affect the measurement accuracy)
Besides, the temperature of skin is not stable. A healthy person just run the 5 km, the skin temperature may be on the high side.
For the problem that the temperature of the forehead thermometer is easy to be affected by the environment, it can be solved by taking the average several times, or comparing the temperature of the armpit measured by the forehead gun and the mercury thermometer.
Specifically, you can do as below:
1. Make sure your body temperature is normal;
2. Measure your body temperature with a forehead gun and write down the number, such as 36℃;
3. Measure the body temperature of the same part of another person. If the measurement result is obviously higher than 36℃, it is necessary to carry out further examination on this person.
As for the problem of the forehead itself, it is recommended that the subject take a few minutes to measure in the temperature measurement environment to make the body adapt to the ambient temperature
Does It really work to measure the wrist with the forehead thermometer?
Researcher says that if you want to measure the body temperature of people entering the room from outside, or when taking temperature measurements outdoors, it is best to measure the parts covered by clothing, such as the wrist or neck, the reading will be more accurate.
The temperature of the wrist itself is relatively stable. During the sober time, the temperature of the wrist changes by about 1°C, which is not too large compared to the exposed forehead.
Forehead thermometer seems not that perfect for measuring temperature, why most of public departments use it?
The mercury thermometer to measure the temperature of the armpit is cheap and accurate, but it takes a long time to measure, and on the other hand, because the measurement process touches the human body, it needs to be disinfected after each use, which adds to the workload. In addition, if you break the mercury thermometer, it will produce broken glass slag and harmful mercury.
There is also an ear thermometer that extends into the ear hole to measure the temperature of the eardrum. The accuracy is relatively high, but there is also the problem of physical contact. You can use a disposable protective cover on the ear thermometer probe, but it is a big cost.
Thus, in the face of infectious diseases and a large number of susceptible people, the forehead thermometer is a cost-effective choice. During SARS in 2003, and during the Ebola epidemic in West Africa a few years ago, infrared thermometer plays an important role in public protection.
Except for this kind of handy forehead thermometer, there is also a new fixed one.
AI Thermometer,Non-contact Automatic Operation Wall Mount Thermometer
This is a new type of AI voice thermometer,suitable for schools, offices, buses, vehicles,supermarkets, parking lots and other environments.There are two installation methods: wall-mounted and bracket,which saves people from taking a close-up to measure body temperature and reduces the risk of cross infection. This product can be effectively used for many years if used properly and maintained with care.
Features
- Digital measurement of frontal temperature, conversion of Celsius / Fahrenheit, low battery reminder, voice prompt
- Clean and hygienic
- Non-contact anthropometry
- Fast and accurate
- Automatic operation, accurately measured in two seconds
- Body temperature
- 20 sets of measurement memory
