Multi point explosion-proof thermocouple is a temperature sensor widely used in chemical industry automation systems. Through temperature sensors, explosion-proof thermocouples can convert the temperature parameters of the controlled object into electrical signals, which are transmitted to display, record, and regulate instruments to detect, adjust, and control the system. Suitable for production sites with flammable and explosive compounds that require simultaneous measurement at multiple locations or locations. Widely used in petrochemical distillation tower units.

In chemical plants, various flammable and explosive chemical gases and vapors are often present on the production site. Using ordinary thermocouples is very unsafe and can easily cause environmental gas explosions. Therefore, multi-point explosion-proof thermocouples must be used in these situations, which are suitable for places with explosive gas hazards within the temperature range of d Ⅱ CT6.

Multi point explosion-proof principle:

Design junction boxes and other components with sufficient strength using the principle of gap explosion-proof;

Seal all components that may generate sparks, arcs, and dangerous temperatures inside the junction box in case of an explosion inside the chamber;

It can extinguish and cool through the gap between the joint surfaces, preventing the flame and temperature from spreading outside the chamber after the explosion.

Multi point explosion-proof thermocouples are suitable for the presence of flammable and explosive compounds in production sites, which require simultaneous measurement of multiple locations or locations. They are widely used in petrochemical distillation tower devices. The thermoelectric potential of multi-point explosion-proof thermocouples will increase as the temperature at the measuring end rises. The magnitude of the thermoelectric potential is only related to the material of the thermocouple conductor and the temperature difference at both ends, and is dependent on the length and diameter of the thermocouple. Prefabricated thermocouples are mainly composed of junction boxes, protective tubes, insulation sleeves, wiring terminals, thermoelectric components, and various installation and fixing devices.

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