Bimetallic thermometer encyclopedic knowledge

Bimetallic thermometer is a type of thermometer, in many areas of daily life has the figure of bimetallic thermometer, such as food, chemical, oil and other industries. Bimetallic thermometer is a kind of measurement in the field of low temperature test instrument. Can be directly measured in the process of various production - 80℃- Liquid + 500 ℃ range steam and gas medium temperature. Bimetallic thermometer is mainly used in industry of element is one with two or more pieces of metal laminate composed of multilayer metal together, using two different metal working in the principle of expansion degree of different temperature changes. Bimetallic thermometer is based on the ring around the made of bent bimetallic strip. End is heated expands, turns the pointer, the instrument will show thermoelectric potential should value. Bimetallic thermometer is a round shape into threaded heat bimetallic strip as thermal devices, and put it in a protective sleeve tube, one end is fixed, known as the fixed end, the other end of the connection on a thin shaft, a free end. Spool at the free end is equipped with a pointer. When the temperature changes, the resulting thermal devices the free end of the rotation, drive the thin axis from the Angle of the pointer changes, corresponding temperature indicator on the dial. 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. Above is the introduction of the basic knowledge of the bimetallic thermometer, hope everyone can combine their own actual situation to the related knowledge of bimetallic thermometer is a more in-depth understanding.