Thermometer pinyin: [tǐ wēn jì]
Supplementary information:
1. Mercury thermometer. Cheap, easy to use, almost everyone, and mercury thermometer easy to clean, easy to disinfect, at the same time, mercury thermometer is the "gold standard" for measuring body temperature.
But the shortcomings are also difficult to ignore, including the measurement time is long, generally 10 minutes; glass material, easy to break; broken mercury will pollute the environment, is not good for health; need to be measured with the cooperation of the people, is not suitable for mental illness, such as the behavior of the uncontrolled crowd to use and so on.
2, electronic thermometer. The use of methods and precautions and mercury thermometer is almost the same, are placed under the tongue, armpit or rectum, the most in line with the public's habit of use. However, it has the disadvantage that it takes slightly longer to measure the body temperature, and the time required for different brands ranges from 30 seconds to more than 3 minutes.
In addition, diet, strenuous exercise, bathing, etc. will affect the results of the measurement, you need to wait 30 minutes before measuring. The accuracy of the electronic thermometer will also be affected by the electronic components, battery power supply conditions and other factors.
3, infrared thermometer. Infrared thermometer is a use of radiation to measure the human body temperature meter, which uses infrared sensors only absorb infrared radiation from the human body and does not emit any rays to the outside world, through a non-contact method of sensing the human body temperature.
The infrared radiation from the human body is gathered on the detector, and the detector converts the radiant power into an electrical signal, which can be displayed in temperature units after being compensated for the ambient temperature. Currently on the market common infrared temperature measurement instruments are mainly ear temperature gun, forehead temperature gun.
4, ear temperature gun. Measuring the temperature of the tympanic membrane, the tympanic membrane can respond to the body's core body temperature, the most reflective of the body's true body temperature, but also most of the medical places to replace the mercury thermometer used to determine the basis of the body temperature.
But because the human ear canal is not straight, infants and young children under the age of 3 need to lift their ears to the lower back and lower back when measuring their ear temperature, and adults over the age of 3 or older should lift their ears to the upper right in order to place the ear thermometer in the correct position.
The ear canal diameter of small children under 6 months of age is small, making the use of an ear thermometer inappropriate. Suffering from otitis externa, otitis media and other ear diseases, swimming, bathing when the ear hole is wet is also not suitable for the use of ear thermometer. In addition, if the measurement is repeated several times in a short period of time, the ear thermometer itself will affect the temperature of the ear canal, which will also affect the accuracy of the measurement results.