Hold you know 'bimetallic thermometer'

In foreign markets, bimetallic thermometer is widely used in oil, gas pipelines, equipment installation, food industry, chemical industry. Now. Simple instrument to introduce bimetallic thermometer: 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, with the wound as helical spring of bimetallic strip as a temperature sensing element, put the protection tube, one end fixed on the bottom protection tube ( Fixed end) And the other end of the connection on a thin shaft ( The free end) , the free end is equipped with a pointer, when the temperature changes, the temperature sensing element with the free end of the drive the pointer rotation, pointer on the dial indicates the corresponding temperature being measured. Bimetallic thermometer is the use of two different metal expansion degree during temperature change, the principle of work. Bimetallic thermometer components: 1, the header ( Dial) 2, (on the cover Case) 3, the pointer ( 指针) 4, joint ( 连接) 5, heat pipe ( 阀杆) 6, bimetallic strip ( 双金属螺旋或线圈)