Bimetallic thermometer should be selected radial or axial?

Bimetallic thermometer is mainly used to measure - Medium temperature field instruments of 50 to 500 degrees. Common bimetallic thermometer is made up of the radial, axial and universal type 3 kinds. Then we should be choose radial or axial? In fact, we understand the difference between them and then know how to choose. Radial and universal bimetallic thermometer is the biggest difference between header and thermal connection direction is different. Universal type bimetallic thermometer is compatible with the radial bimetallic temperature and axial bimetallic thermometer features. So the price also will be slightly more expensive. As to what should choose which one, still need to use the environment and comprehensive consideration of cost performance. Bimetallic thermometer principle is to 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.