What is the structure of bimetallic thermometer

A lot of people understand the bimetallic thermometer is used to install in pipelines, ships, factories and machinery; Do you know of the bimetallic thermometer chart? On the following instruments for you to share industry commonly used axial type, universal type, radial type of structure. 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. Bimetallic thermometer is in custody, installation, use and transportation process, should try to avoid collision protection tube, don't make the protection tube bending, deformation. When installation, it is forbidden to twist the instrument shell.