The WSSX series explosion-proof electric contact bimetallic thermometer outer covering uses the aluminum alloy to make, possibly produces through the aluminum alloy outer covering the measuring appliance in the spark, outside the electric arc electric circuit and the watch case the fire damp mixture separates, thus serves the flame-proof purpose.

　　The explosion-proof electric contact bimetallic thermometer product performance conforms to BG3836.1-2000 "the fire damp environment to use the explosion-proof electrical equipment 1st part: The general request" and GB3836.2-2000 "the fire damp environment uses the explosion-proof electrical equipment 2nd part: Flame-proof type electrical equipment " d "" standard.

　　The explosion-proof electric contact bimetallic thermometer has the electrical pick-off installment - namely mechanical electric contact. When was measured when medium temperature change, in the free electricity thin axis and changes the transmission system to drive the indicator and the moving contact rotation, instructs the temperature on the dial the change value, when it with decides the electronic contact (the bound to decide the instant which electronic contact) contacts or separates, causes in circuitry's relay and the contact device movement, achieves the automatic control and the warning goal.

　　The WSSX series explosion-proof electric contact bimetallic thermometer is the use circles makes the spiral tubular a bimetal piece end to fix, another free electricity and the indicator connection, rotate along with the temperature change, and leads the indicator revolving instruction temperature Shan Zhen type instruction thermometer. Is the petroleum, the coking, the chemical industry, enterprises and so on medicine produces explosive material various processes and so on scene in existence carbide - 80~+500℃ in the scope the liquid, the steam and the gas medium as well as the solid surface temperature survey.