Explosion proof thermocouple

Industrial explosion-proof thermocouples are a type of temperature sensor widely used in chemical industry self-control systems. Through temperature sensors, explosion-proof thermocouples can convert the temperature parameters of the controlled object into electrical signals and transmit them to displays, recorders, and regulators to detect, adjust, and control the system.

In chemical plants, the production site is often accompanied by various flammable, explosive and other chemical gases. If ordinary thermocouples are used, it is very unsafe and can easily cause environmental gas explosions. Therefore, in these situations, explosion-proof thermocouples must be used as temperature measuring instruments. The explosion-proof thermocouple products produced by our company are suitable for places with explosive gas hazards within the EXd Ⅱ CT6 temperature group range.

Working principle:

If a closed circuit is composed of two homogeneous conductors (thermoelectric electrodes) with different compositions, when there is a temperature gradient at both ends, there is current passing through the circuit, and there is a thermoelectric potential between the two ends.

Explosion proof principle:

Using the principle of gap explosion-proof, design components such as junction boxes with sufficient strength, and seal all components that can generate sparks, arcs, and dangerous temperatures inside the junction box. When an explosion occurs inside the chamber, it can be extinguished and cooled through the gap between the joint surfaces, so that the flame and temperature after the explosion do not transmit to the outside of the chamber.

Features:

Design according to the new explosion-proof regulations GB3836 that comply with international IEC standards;

Adopting a two chamber explosion-proof structure, it is easy to replace temperature measuring components and safe and reliable to use;

Explosion proof mark EXd Ⅱ CT6, suitable for temperature measurement in environments below IIC level, ignition temperature T6 or above, and containing explosive gases.