The working principle and precautions of household thermometers

Release Time:

Nov 09,2022

The working principle and precautions of household thermometers

Household thermometers belong to a kind of bimetal thermometer. Its working principle is that the main component is a multi-layer metal sheet composed of two or more metal sheets stacked together, using the degree of expansion of two different metals when the temperature changes. Different principles work. When the temperature changes, the free end of the temperature sensing device rotates accordingly, which drives the pointer on the thin shaft to change the angle, indicating the corresponding temperature on the watch plate. Today we will talk about how to use household thermometers.

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When using household thermometers, you need to pay attention to the following 5 problems:
1. The probe insertion depth for different foods is different;
2. Wait for the thermometer to be inserted into the food for 15 seconds before reading the number;
3. When reading the temperature of the meat, the best practice is to read at least 2 times and insert in different places, because the temperature of different parts of the food may be different
4. When reading the temperature of the liquid, do not let the sensing area of the probe touch the perimeter or bottom of the container.
5. Always clean and sterilize the household thermometers before use and after each use.