Bimetallic thermometer working principle is to use two different temperature expansion coefficient of metal, welding in fixed point at one end, on the other side when the temperature distortion, converts it into a pointer deflection Angle, indicating the temperature. Core pulling type refers to bimetal thermal element can change from the external protecting tube, is the use of a wide range of field indicating thermometers. 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. Type 1, radial bimetallic thermometer: pointer GuanPing line connection plate and protection; Type 2, 135 ° to the bimetallic thermometer: pointer disk protection tube into 135 ° and connectivity; 3, universal type bimetallic thermometer: pointer plate connected to the protecting tube Angle can be arbitrary adjustment; 4, axial type bimetallic thermometer: pointer vertical connection tube plate and protection.
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