Basic introduction of bimetallic thermometer

Bimetallic thermometer is used for measuring the medium temperature on industrial initiative in instrument is also one of the most popular temperature meter, it is a kind of field detection instrument suitable measurement, low temperature, can be used to measure the temperature of the gas, liquid and steam. Its principle and layout of a waterproof, prevent corruption, flame-proof, shock resistance, intuitive, easy reading, no mercury pollution, sturdy and durable, etc. Can replace other measuring instrument, which are widely used in kerosene, chemical industry, machinery, ships, electricity, textile, printing and dyeing and other industries and scientific research. The working principle of bimetallic thermometer is the use of a use two or more pieces of metal laminate composed of multilayer metal together. Pieces for progress measurement WenMinJie degrees, will usually metal spiral coil shape. When multi-layer metal temperature changes, the layers of metal expansion or shrinkage of range, makes the spiral coil rolled up or let go. As a result of the spiral coil end is fixed and the other end is connected to a free rotating pointer, therefore, when a bimetallic strip induction to temperature changes, Pointers can be on a circular dividing scale to indicate the temperature.