Bimetallic thermometer how to recognize?

Bimetallic thermometer is a kind of measuring instrument in the field of low temperature detection, it is mainly represented by the pointer pointing to temperature, can be directly measured in the process of various production - Within the scope of 50 ℃ ~ + 500 ℃ liquid steam and gas medium temperature. As shown, has said the temperature of the measured medium is 22 ℃. The working principle of bimetallic thermometer is to put the two pieces of expansion coefficient difference is very big pieces of metal welded together. When the temperature changes, the difference is very big, caused the different expansion coefficient of expansion and contraction, the deformation of sheet metal bending. According to different deformation and produce different momentum, momentum to drive the connection shaft and the other end of the indicating needle, indicate the temperature. It is widely used in the industry, petroleum, chemical industry, heating system, piping, hvac system, water heater, heat preservation box. According to different usage environment, the bimetallic thermometer will also have some nickname, such as pointer thermometer, piping, hvac, industrial thermometer thermometer thermometer, etc.