Operation method of infrared human thermometer
The operation method of infrared human body thermometer must do the following:
1. Try to require the person being measured to stay in the measurement environment long enough to make the surface heat exchange conditions of the person being measured the same or similar. For example, at the airport, the measurement should be made 10 minutes after the passenger arrives at the airport terminal. At this time, the ventilation and temperature conditions of the building were basically stable, and the external heat exchange conditions of the passenger's forehead were basically similar.
2. The measurement place should be indoors as much as possible, and avoid direct sunlight on the infrared radiation thermometer and the forehead of the person being measured.
To accurately estimate the distance of the measured person.
3. The temperature of the person's forehead is generally 1 to 3 degrees Celsius lower than the temperature of the armpit. At this time, the criterion of the armpit temperature of fever should be converted to the temperature of the forehead.
Infrared ear thermometers measure ear temperature and can be measured within 1 second. Since human eardrums and ear canal are less affected by external environmental conditions, infrared ear thermometers can accurately measure body temperature. Human ear temperature is generally 0.4 degrees Celsius higher than armpit temperature. At this time, the infrared ear thermometer display value should be 4. The temperature criterion of armpit under fever should be converted to the criterion of ear temperature.
5. In order to ensure the accuracy and stability of the infrared radiation thermometer, calibration and comparison with a standard calibration device should be performed regularly.
6. Non-contact infrared radiation thermometers are divided into industrial and medical. Medical infrared radiation thermometers should be used when measuring body temperature, because industrial
7. Wide range, low resolution and large error.
8. Various thermometers are sorted according to the measurement accuracy from high to low: medical thermometers, infrared ear thermometers, infrared radiation thermometers on body surface. From the perspective of SARS prevention, infrared ear thermometers are more accurate than body surface infrared radiation thermometers.