How often do you change the earmuffs of the ear thermometer?
An earmuff can be used for 6-8 times without changing it once, which is too wasteful; Different people suggest using different earmuffs, which are cleaner and more exquisite. Wiping earmuffs with alcohol and cotton can increase the use times of earmuffs. There are also two kinds of earmuffs: repeated earmuffs: after each use, you need to wipe the earmuffs with a cotton swab dipped in medical alcohol. Its advantage is that the earmuffs can be reused, but its disadvantages are: ① If the earmuffs are stained with grease or dirt, it will affect the accuracy of the next temperature measurement; ② Repeated wiping will wear or scratch the earmuffs, which will affect the accuracy of temperature measurement; ③ It takes a long time (about 5 M5 minutes) to take the second measurement after wiping medical alcohol, and it is impossible to take multiple measurements in a short time. Disposable earmuffs: replace the earmuffs immediately after each use.
What is the function of earmuffs of ear thermometer?
Because every time the ear temperature is measured, earwax and dander will be stained, which will affect the accuracy of temperature measurement. Secondly, if you use earmuffs more often, it may cause earmuffs to deform and affect the accuracy of temperature measurement, so it is recommended to replace them regularly. After each use, you need to wipe the earmuffs with a cotton swab dipped in medical alcohol. However, it takes a long time (about 5 M5 minutes) to take the second measurement after wiping medical alcohol, and it is impossible to take multiple measurements in a short time. The ear thermometer can measure the accurate body temperature from the ear in one second or even less. When the baby continues to have a fever, it can be measured at any time to quickly understand the temperature changes. It is very comfortable and gentle to use, and the baby will not feel uncomfortable. It detects the infrared heat emitted by the eardrum and surrounding tissues, and then quickly calculates the accurate body temperature through the built-in microcomputer chip and displays it to one decimal place, thus solving the problem that the traditional thermometer scale is difficult to identify.
Principle of ear thermometer
The radiation energy of human tympanic membrane mainly comes from 6~ 15μm area. Ear temperature guns usually use thermopile sensors, including the above optical system, photodetector-thermopile and thermistor. The far infrared radiation intensity of human tympanic membrane of 6~ 15μm was detected by thermopile sensor. This measurement result is a relative quantity, that is, the obtained result is related to the radiation intensity of the measured object and the temperature of the thermopile itself. Thermistor is used to measure the temperature of thermopile itself. By calculating the radiation intensity and the temperature of the thermopile itself, the temperature of the measured object can be obtained. According to whether earmuffs are used or not and the times of use, infrared earmuffs can be divided into three types: no earmuffs, repeated earmuffs and disposable earmuffs.
What is an ear thermometer?
Ear thermometer is a non-contact telemetering and temperature measuring instrument, which measures body temperature by detecting the infrared spectrum emitted by tympanic membrane. According to the theory of blackbody radiation, the infrared spectra produced by objects with different temperatures are different. A very accurate thermopile infrared detector is used to measure the temperature, which is then converted into a reading by a microcomputer and displayed. Before using the ear temperature gun, you need to pay attention to the following two points: First, the deeper the gun head, the better, but do not cause discomfort. Second, don't do strenuous exercise before measurement.