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Measuring measurement errors due to temperature and wind speed (such as the cold and windy days in the north, using a forehead gun outdoors may affect the measurement Accuracy) ;

Second, the skin temperature of the forehead exposed is not stable: a healthy person has just run 5 kilometers, and the skin temperature measured by the forehead gun is likely to be too high. It was blown for half an hour in the north wind. The value may be low. If the subject’s forehead is covered by hair, sweat, grease and dirt, it will also affect the reliability of the forehead gun degree ^{[1] .}

It’s not easy to be fast and accurate.

The take-out packaging of the previous few days is accompanied by the temperature of the staff involved in the take-out. The body temperature is so low, it is likely that it was measured by a forehead gun. 丨 Photo by the author

The gun is not allowed, what should I do?

For the problem that the temperature measurement of the forehead gun is easily affected by the environment, it can be solved by taking several measurements and taking the average value, or comparing the underarm temperature measured by the forehead gun and the mercury thermometer.

Specifically, you can do this:

1, make sure your temperature is normal;

2. Measure your body temperature with a forehead gun and take a reading, such as 36 ℃;

3. Measure the body temperature of the same part of another person. If the measurement result is significantly higher than 36 ° C, it is necessary to conduct a further examination of this person.

As for the problem of the forehead itself, it is recommended that the subject wait for a few minutes in the temperature measurement environment to measure, so that the body can adapt to the ambient temperature. Some manufacturers of forehead guns have suggested that in addition to measuring the forehead, you can also measure the abdomen, chest, and shoulder blades. For more stable temperature, please refer to ^{[2] . But being forced to stop on the way, and to carry clothes in public, was not realistic for all parties.}

Will a forehead gun measure the wrist?

A compromise, can you measure your wrist temperature quickly with a forehead gun?

At the press conference of the State Council ’s Joint Prevention and Control Mechanism held on February 16, Feng Luzhao, a researcher at the Chinese Center for Disease Control and Prevention, said, If you want to use a forehead gun to measure the temperature of people who enter indoors, or outdoors When taking a temperature measurement, it is best to measure the parts covered by clothing, such as the wrist or neck, the reading will be more accurate ^{[3] .}