The bimetallic thermometer manufacturer bimetallic thermometer principle and selection of the application

Bimetallic thermometer principle is applied thermal expansion principle of temperature measurement, belong to solid expansion thermometer. Bimetallic thermometer based on solid heat expansion principle, measuring temperature is usually put the two pieces of expansion coefficient difference is relatively large pieces of metal stitch welding together, constitute a bimetallic temperature sensing element. Bimetallic thermometer manufacturers when temperature changes, due to 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. Bimetallic thermometer 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. Bimetallic thermometer measuring temperature range is roughly as follows: - 80 ℃ to 550 ℃, but the precision of the extremely low and high temperature is not high. The bimetallic thermometer manufacturer bimetallic thermometer principle determines the extent of the bimetallic thermometer is good, easy reading, widely applicable to various kinds of industrial production and equipment. Classification: according to the bimetallic thermometer pointer plate with the direction of protecting tube connection bimetallic thermometer can be divided into axial, radial and 135 ° to the model and universal model. (1) universal type bimetallic thermometer: pointer plate connected to the protecting tube Angle can be arbitrary adjustment. (2) type axial bimetallic thermometer: pointer vertical connection tube plate and protection. (3) the radial type bimetallic thermometer: pointer GuanPing line connection plate and protection. (4) type 135 ° to the bimetallic thermometer: pointer plate connected to protection tube into 135 °. Bimetallic thermometer manufacturers 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.