Does infrared thermometer harm the human body
After discussions and experiments by various experts in China, it has been found that infrared thermometers receive radiation from the human body and belong to completely passive working instruments. They do not emit any electromagnetic waves and do not cause any harm to the human body.
The function of the red laser is only to assist in aiming. Please be careful not to aim the laser at the eyes or turn off the laser when measuring the human body.
The principle of an infrared thermometer is based on the principles of Planck and Boltzmann's laws. A non-contact infrared thermometer measures the surface temperature of an object by absorbing the infrared energy radiated from the human body surface. That is, the infrared probe converts the detected infrared energy into an electrical signal, which is then processed through circuit calculations and ultimately converted into a temperature reading.
How far is an infrared thermometer more suitable for measuring
Please pay attention to the distance coefficient marked on the instrument. Generally, the larger the coefficient, the smaller the target can be measured at the same distance, or the larger the target can be measured at a further distance.
Try to require the person being measured to stay in the measurement environment for a sufficient amount of time; The measurement location should be chosen 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; The temperature of a person's forehead is generally 1-3 degrees Celsius lower than the temperature under the armpit. At this time, the temperature data under the armpit with a fever should be converted into forehead temperature data.
The infrared ear thermometer measures ear temperature and can be completed within 1 second. Due to the relatively small influence of external environmental conditions on the human eardrum and ear canal, the infrared ear thermometer can accurately measure body temperature. The ear temperature of a person is generally 0.4 degrees Celsius higher than the armpit temperature. This is the infrared ear thermometer display that should convert the axillary temperature data of fever into ear temperature data;
To ensure the accuracy and stability of infrared radiation thermometers, regular calibration with standard calibration devices should be carried out; Non contact infrared radiation thermometers are divided into industrial and medical types. When measuring body temperature, medical infrared radiation thermometers should be selected because industrial thermometers have a relatively wide range, low resolution, and large errors; Various infrared thermometers, from high to low in measurement accuracy, include medical thermometers, infrared ear thermometers, and surface infrared radiation thermometers.
