What kinds of thermometers are used in life?

1, glass thermometer, the working substance is liquid (containing mercury), which has the characteristics of accurate measurement, high stability, low price and no need for external power supply, but the glass thermometer is fragile and may cause mercury pollution.

2. The electronic thermometer has the advantages of convenient reading, short measuring time, high measuring accuracy, memory and buzzer prompt. Electronic thermometer contains no mercury, which is harmless to human body and surrounding environment, and is especially suitable for use in homes, hospitals and other places.

3. Infrared thermometers can be divided into contact type and non-contact type, which can work normally under certain circumstances. It is best to measure in a place where there is no strong convection, strong radiation and high humidity, and the temperature is relatively constant, and it meets the environmental temperature specified by the instrument.

Extended data:

Usually the main parts for measuring body temperature are forehead, cochlea, mouth, armpit and anus. The temperature of these parts is close to the actual temperature of human body, but there are some differences in the measured temperature of different parts.

Among them, the normal range of anal temperature is 36.6℃ to 37.8℃, and 38℃ and above is fever; The normal range of axillary temperature is 36.0℃ to 37.0℃, and fever occurs above 37.5℃. The normal range of oral temperature is 36.3℃ to 37.2℃, with fever above 37.2℃ in the morning and above 37.7℃ in the afternoon. When measuring body temperature, we should pay attention to the influence of environment, time and other factors on body temperature.

Xinhuanet-Correct use of thermometer