Bimetallic strip produced by the principle of thermometer?

Bimetallic thermometer is a kind of can directly measure - 50 to 500 c temperature field instruments, widely used, in the industrial equipment, petrochemical industry, heating systems, hvac equipment, pipes, ventilation, power plants, Marine and other fields can be got. It is closely related to our life. Then you know bimetallic strip made of the principle of the thermometer? By using two different pieces of metal as a thermal expansion system components and made of thermometer called bimetallic thermometer, its working principle is based on the principle of solids expand 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. Bimetallic thermometer can be fast reading, easy to use, simple installation, safe and reliable, long service life.