WSS bimetallic thermometer temperature sensing element, you know?

Bimetallic thermometer good vibration resistance, but the relative accuracy is not high, generally applied in industrial temperature measurement. Bimetallic thermometer principle is applied thermal expansion principle of temperature measurement, belong to solid expansion thermometer. When the temperature changes, because the bimetallic strip of the materials of the two different linear expansion coefficient is relatively large produce different expansion and contraction, 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, produce different expansion and contraction, leading to the curving deformation of bimetallic strip. As there are different according to different deformation amount of momentum transfer, the amount of rotation drive connection shaft, shaft drive at the other end of the indicating needle, indicating pointer is just on the correct reading, indicate the temperature. According to the principle of double metal thermometer, the shape of the bimetallic thermometer temperature sensing element and can be divided into planar spiral type and linear spiral type two kinds big.