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[Chemical Knowledge]：Unraveling the mystery of bimetallic thermometers

Read： 626 Time：19months ago Source：Transform the World with Simplicity

With the development of modern industrial technology, accurate measurement of temperature has become an indispensable part of production. As a common and reliable temperature measuring instrument, bimetal thermometer is widely used in various fields. In this paper, we deeply explore the working principle of bimetal thermometer. The working principle of the

bimetal thermometer is based on the thermal expansion characteristics of the metal. Theoretically, any metal can be used to make the bimetal. Because different metal materials have different linear expansion coefficients, different metal sheets have different degrees of expansion after being heated at different temperatures, so the shape of the bimetallic sheet will change.

Under normal circumstances, the structure of a bimetallic thermometer is mainly composed of a bent bimetallic sheet and two energized contacts connected to it. When the bimetallic sheet is subjected to thermal action, due to the different degrees of expansion of two different metal materials at different temperatures, it will produce a certain bending deformation. When the temperature rises to a certain level, the bending deformation will make the contacts contact or break, so that the state of the circuit switch changes. In this way, the temperature change can be converted into an electrical signal output, so as to realize the temperature measurement. The advantages of

bimetal thermometer are its high precision, good sensitivity, and strong anti-interference ability. In addition, the bimetal thermometer has good linearity and repeatability, so that its reliability has been well guaranteed. Moreover, the bimetal thermometer is relatively stable and durable during use.

bimetal thermometer has many advantages and irreplaceable role, no matter in which industry has a wide range of applications. Understanding its working principle is very beneficial for us to improve its efficiency and safety. I hope this article can solve the difficulty of using bimetal thermometer for everyone, and also can promote the development of bimetal thermometer in the future.

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