Industrial flameproof thermocouple is a kind of temperature sensor, widely used in the chemical industry automatic control system, through the flameproof thermocouple can control the temperature parameters of the object into electrical signals, transferred to the display instrument, recorder and regulator, the system implementation of detection, regulation and control.

In chemical plants, the production site is often accompanied by a variety of flammable, explosive and other chemical gases, if the use of ordinary thermocouple is very unsafe, easy to cause environmental gas explosion. Therefore, in these occasions must use flameproof thermocouple as a temperature measuring instrument, the company's production of flameproof thermocouple products suitable for EXdⅡCT6 temperature group within the dangerous place with explosive gas.

Working principle:

If a closed loop consists of two homogeneous conductors (thermal electrodes) of different components, when there is a temperature gradient at both ends, there is a thermoelectric potential between the two ends.

Explosion-proof principle:

Using the gap flameproof principle, design with sufficient strength junction box and other components, all will produce sparks, arc and dangerous temperature parts are sealed in the junction box, when the cavity explosion, through the joint surface clearance flameout and cooling, so that the flame and temperature after the explosion does not spread outside the cavity.

Special points:

According to the international IEC standard z.u new explosion-proof specification GB3836 design;

Using two cavity flameproof structure, easy to change the temperature measuring element, safe and reliable use

Flameproof mark EXdⅡCT6, suitable for ⅡC level below, ignition temperature above T6, containing explosive gas temperature measurement. Selection method: