Bimetallic thermometer temperature sensing element is what

Do you know the bimetallic thermometer temperature sensing element is? Below small make up to answer for you: bimetallic thermometer temperature sensing element is a bimetallic strip. Are composed of two or more have appropriate performance of metal or other material of a kind of composite material. Bimetallic thermometer structure: the principle of the 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, called the 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.