Incorrect use of infrared human body thermometer

—— Try to require the measured person to stay in the measurement environment long enough to make the measured person's surface heat exchange conditions 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.

——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.

—— Accurately estimate the distance of the person being measured.

——The temperature of a person's forehead is generally 1 to 3 degrees Celsius lower than the temperature of the armpit. At this time, the criterion of the temperature of the armpit with fever should be converted to the temperature of the forehead.

——Infrared ear thermometer is used to measure ear temperature, which can be measured within one second. Since human eardrum and ear canal are less affected by external environmental conditions, infrared ear thermometer can accurately measure body temperature. Human ear temperature is generally higher than armpit temperature by 0.4 degrees Celsius. At this time, the infrared ear thermometer should convert the fever armpit temperature criterion to the ear temperature criterion.

——To ensure the accuracy and stability of the infrared radiation thermometer, calibration and comparison with a standard calibration device should be performed regularly.

——Non-contact infrared radiation thermometers are divided into two types: industrial and medical. Medical infrared radiation thermometers should be used when measuring body temperature, because industrial use has a wide range, low resolution, and large errors.

——The various thermometers are sorted according to the measurement accuracy from high to low: medical thermometer, infrared ear thermometer, body surface infrared radiation thermometer. From the perspective of preventing SARS, infrared ear thermometers are more accurate than body surface infrared radiation thermometers