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technical article
Characteristics and principle of flameproof thermocouple
2012-1-14 11:12:41

Overview
是一种温度传感器,在化学工业自控系统中应用极广,通过温度传感器,可将控制对象的温度参数变成电信号,传递给显示、记录 Industrial flameproof thermocouple is a kind of temperature sensor. It is widely used in the chemical industry automatic control system. Through the temperature sensor, the temperature parameter of the control object can be converted into an electrical signal and transmitted to the display and record.

And regulators to test, regulate and control the system.


In chemical plants, the production site is often accompanied by various flammable and explosive chemical gases and steam. If ordinary thermocouples are used, it is very unsafe and can easily cause environmental gas explosion. Therefore, it is necessary to use

产品,适用于dⅡCT6温度组别区间内的具有爆炸性气体危险的场所内。 Explosion-proof thermocouples are used as temperature sensors. The explosion-proof thermocouples produced by our company are suitable for use in places with explosive gas hazards within the temperature range of dⅡCT6.

working principle:


If a closed loop is composed of two homogeneous conductors (hot electrodes) of different components, and when there is a temperature gradient at both ends, a current will flow through the loop, then there will be a thermoelectric potential between the two ends.

Explosion protection principle:


原理,设计具有足够强度的接线盒等部件,将所有会产生火花、电弧和危险温度的零部件都密封在接线盒内,当腔内发生爆炸时, Utilize the principle of the gap flameproof thermocouple , design the junction box and other components with sufficient strength, and seal all the parts that will generate sparks, arcs and dangerous temperatures in the junction box. When an explosion occurs in the cavity,

Can be extinguished and cooled through the gap of the joint surface, so that the flame and temperature after the explosion are not transmitted to the outside of the cavity

Features:

Designed according to the latest explosion-proof regulations GB3836 in compliance with international IEC standards;

Adopt two-chamber flameproof structure, easy to replace 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.