Explosion Proof thermocouples are for use in hazardous areas. They are designed to extinguish flames inside the device eliminating the potential for ignition of ammable mixtures in the surrounding atmosphere. FM and CSA approved assemblies, dependent on connection head type, meet XP Class I, Division 1, Group A, B, C and D; DIP Class II, Division I, Groups E, F, G, and Class III, Division 1. They may be installed directly in the process without being inserted into a thermowell. The assemblies feature 316 stainless steel sheaths in various diameter sizes. They are available with or without process mountings and with aluminum or stainless steel explosion proof connection heads.

​

Explosion proof thermocouple is a kind of temperature sensor, which is widely used in chemical industry automatic control system. Through the temperature sensor, the temperature parameter of the controlled object can be turned into an electrical signal, which can be transmitted to the display, record and regulator to perform detection, Regulation and control. In chemical plants, the production site is often accompanied by various flammable and explosive chemical gases and steam. It is very unsafe to use ordinary thermocouples, and it is very easy to cause environmental gas explosions.
 

Explosion proof thermocouple thermometer working principle
If a closed loop is composed of two homogeneous conductors (thermoelectrodes) of different components, when there is a temperature gradient at both ends, there is a current passing through the loop, and then there is a thermoelectric potential between the two ends. Explosion-proof uses the principle of clearance and explosion-proof, designing junction boxes and other components with sufficient strength to seal all parts that generate sparks, arcs and dangerous temperatures in the junction box. When an explosion occurs in the cavity, it can pass through the gap of the joint surface. Extinguish and cooling, so that the flame and temperature after the explosion will not be transmitted to the outside of the cavity.

Explosion proof thermocouple thermometer Feature
A variety of explosion-proof forms, good explosion-proof performance; pressure spring type temperature sensing element, good vibration resistance; large temperature measurement range; high mechanical strength, good pressure resistance; designed according to the latest explosion-proof regulation GB3838 that meets the international IEC standard; adopts two chambers Type explosion-proof structure, easy to replace the temperature measuring element, safe and reliable to use

Explosion-proof mark dⅡCT6, suitable for temperature measurement below ⅡC level, ignition temperature above T6, and explosive gas.