The principle and application of electric contact bimetallic thermometer

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. Electric contact bimetallic thermometer is the use of lead contact changes when temperature changes, when contact with the upper and lower limits or disconnected at the same time, make the circuit of relay action, to control and alarm automatically. This thermometer is applied to production field of temperature control and alarm automatically. - direct measurement of all kinds of production process Within the scope of 80 ~ 500 ℃, steam and gas medium temperature. The characteristics of the electric contact bimetallic thermometer summarized four: 1 the scene display temperature, intuitive and convenient; 2 with automatic cut off power and alarm functions; 3 safe and reliable, long life; Four kinds of structure forms, can meet different requirements.