The function and principle of the bimetallic thermometer

Bimetallic thermometer principle is to use different expansion coefficient of two kinds of metal or alloy plate temperature sensing element of firmly together, generally made spiral wound, usually at one end fixed and the other end with a pointer. When the temperature changes, the temperature sensing element change of curvature, free end rotation, drive the pointer on the dial indicator temperature values. The bimetallic thermometer pointer plate with the direction of protecting tube connection bimetallic thermometer can be divided into axial, radial and 135 & deg; To type and universal type four. (1) the axial type bimetallic thermometer: pointer vertical connection tube plate and protection. (2) the radial type bimetallic thermometer: pointer GuanPing line connection plate and protection. ③135度; The bimetallic thermometer: pointer tube plate and protection into 135 & deg; The connection. (4) universal type bimetallic thermometer: pointer plate connected to the protecting tube Angle can be arbitrary adjustment. The axial, radial, 135 type, universal type, such as the variety is complete, bimetallic thermometer adapted to the various installation needs. Bimetallic thermometer features: no mercury pollution, easy reading, strong shock resistance. Protection is 1 gr18ni9ti stainless steel and molybdenum titanium tubes, pressure and corrosion ability. Bimetallic thermometer is a kind of field detection instrument suitable for the measurement of low temperature, and can be used to directly measure the temperature of the gas, liquid and steam. The thermometer from the design principle and the structure has the waterproof, corrosion resistance, vibration resistance, intuitive, easy reading, no mercury pollution, durable and other characteristics, bimetallic thermometer can work in the temperature exceeds a given value, automatic signal control to cut off the power supply or the police. Can replace other form of thermometer table, widely used in petroleum, chemical industry, machinery, ships, electricity, textile, printing and dyeing and other industrial and scientific research departments.