Instrument to tell you how should bimetallic thermometer readings?

Bimetallic thermometer is widely used in daily life, its working principle 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. So the bimetallic thermometer has become more and more temperature measuring instrument of choice, but also some people will doubt, how should bimetallic thermometer readings? Actually this is very simple, as long as the bimetallic thermometer heat tubes inserted into the measured medium, pointer will shake with the temperature changes at the beginning, to be standing still to the temperature is the temperature of the measured medium. As shown, has said the temperature of the measured medium is 22 ℃.