The measurement accuracy is lower than that of contact thermometers, mainly including infrared ear thermometers, infrared forehead thermometers, infrared screeners, thermal imagers, etc.

If non-contact thermometers are classified by accuracy:

Infrared ear thermometers> infrared forehead thermometers, a small number of thermal imagers> infrared screeners, some thermal imagers

Infrared forehead thermometers, infrared screens, and thermal imagers are the most used equipment in this epidemic prevention and control work. The reason is that they have fast measurement speed, convenient use, and high efficiency.

However, infrared thermometers have high requirements for the environment, and improper use is prone to deviations.

For example, the working environment of the infrared thermometer is (16~35), but now it is winter, and the temperature difference between indoor and outdoor is large. If the room temperature in the community guard room is 20, it is likely that the body temperature will be lower than 35. Therefore, at the highway toll station, it is necessary to turn off the air conditioner in advance and roll down the window to reduce the temperature difference between the inside and outside of the car and reduce the measurement error. In addition, whether the object being measured has bangs and whether the cream is rubbed will cause measurement errors. Finally, measure the distance. According to the instructions, the distance is still (3~5) cm. If you are close to the forehead, you will not be accurate.

Among these non-contact thermometers, only infrared ear thermometers measure body temperature, while others measure skin temperature and human body surface temperature. Metrological detection can accurately measure body temperature by setting the alarm temperature for initial screening, and then using infrared ear thermometer or glass thermometer and medical electronic thermometer for secondary measurement confirmation. Thermometers with large errors can be safely used after being sent to the metrology department for verification or calibration.

Accurate measurement of thermometers is very important for accurately screening patients with fever

Play an important role

Metrological calibration of different thermometers

Need to refer to different national standards