Bimetallic thermometer temperature sensing element structure is introduced

The bimetallic thermometer made on the basis of the principle of solid heat expansion. Measuring temperature is usually take two pieces of expansion coefficient difference is relatively large pieces of metal stitch welding together, constitute a bimetallic temperature sensing element. When the temperature changes, because the bimetallic strip of the materials of the two different linear expansion coefficient is relatively large and produce different expansion and contraction, leading to the curving deformation of bimetallic strip. As there are different according to different deformation transfer momentum, and the amount of rotation drive connection shaft, shaft drive at the other end of the pointer, so indicating pointer can only on the correct reading, indicate the temperature. The principle diagram of the bimetallic thermometer is a ( The principle diagram of the bimetallic strip heating) According to the principle of double metal thermometer, bimetallic thermometer temperature sensing element according to its shape can be divided into planar spiral two spiral type and straight line. The principle of the bimetallic thermometer determines its good vibration resistance, easy reading, which can be widely applied to various kinds of industrial production and equipment. Choose what kind of thermal components actually depends on the temperature range of the thermometer.