Working principle of bimetallic thermometer and classification

Bimetallic thermometer is mainly used for industrial equipment in before, now also is more and more widely, the scope of its application such as home also has a bimetallic thermometer thermometer. Today we are going to organize the working principle of bimetallic thermometer and its classification. The bimetallic thermometer works by thermal element is composed of two layers of linear expansion coefficient difference relatively large pieces of metal welded together, one end of the element as the fixed end, the other end to free end. When the temperature changes, because the bimetallic strip of material is different, linear expansion coefficient of relatively large differences, and produce different expansion and contraction, resulting in bimetallic strip Chi deformation, equipped with actuator (at the free end Dial pointer and temperature) So that it can directly show the temperature value. Bimetallic thermometer are many ways of classification, today let's speak by pointer plate with the direction of protecting tube connection, classify the bimetallic thermometer can be divided into: (1) to the bimetallic thermometer: pointer vertical connection tube plate and protection. (2) the radial type bimetallic thermometer: pointer GuanPing line connection plate and protection. (3) universal type bimetallic thermometer: pointer plate connected to the protecting tube Angle can be arbitrary adjustment. Bimetallic temperature timing the choose and buy, should according to their own need to make the right choice.