2. What are the advantages and disadvantages of several common thermometers?

Nipple thermometer is a new type of thermometer, which uses food-grade silica gel to wrap the sensing device, and the baby contains the sensing probe to measure the body temperature.

Advantages: nipple shape, the baby will not resist, let the baby suck the nipple and play to measure the temperature.

Disadvantages: The accuracy of indication is affected by electronic components and battery power supply.

② Glass thermometer

Advantages: The most common thermometer can keep the mercury column in its original position with the increase of body temperature, which is convenient for users to observe at any time.

Disadvantages: easy to break, there is the possibility of mercury pollution; It takes a long time to measure, which is inconvenient for acute and severe patients, the elderly, infants and so on, and the reading is more troublesome.

③ forehead thermometer

Through the reflection of infrared rays on the forehead surface, the forehead temperature is compared with the corresponding table of spectral temperature, so as to obtain the accurate temperature value.

Advantages: Convenient, simple and fast. Generally, a few seconds of measurement time is enough, and it is quite accurate.

Disadvantages: high price, inconvenient popularization and not suitable for home users. Moreover, when the room temperature exceeds 25 degrees Celsius and the room temperature is lower than 20 degrees Celsius, the forehead thermometer is easily affected by the environmental temperature, including going out, blowing air and turning on the air conditioner, which will have a certain impact on the forehead collection temperature.

④ Ear temperature thermometer

Ear thermometer measures the temperature of human body in a non-contact way by measuring the radiation brightness of eardrum.

Advantages: Just aim the probe at the internal auditory canal and press the measurement button, and the measurement data can be obtained in just a few seconds.

Disadvantages: Not suitable for infants and otitis media users before 10 months.