是一种温度传感器，在化学工业自控系统中应用极广，通过温度传感器防爆型热电偶可将控制对象的温度参数变成电信号传递给显示仪、记录仪和调节仪，对系统实行检测、调节和控制。 Industrial explosion-proof thermocouple is a kind of temperature sensor, which is widely used in the chemical industry automatic control system. Through the temperature sensor explosion-proof thermocouple, the temperature parameter of the control object can be converted into an electrical signal and transmitted to the display, recorder and regulator. , Implement detection, adjustment and control of the system. zzyfwh.com
In chemical plants, production sites are often accompanied by a variety of 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 occasions, explosion-proof thermocouples must be used as temperature measuring instruments. The explosion-proof thermocouples produced by our company are suitable for use in places with explosive gas hazards within the temperature range of EXdⅡCT6.
If a closed loop is composed of two homogeneous conductors (hot electrodes) of different components, and there is a current in the loop when there is a temperature gradient at both ends, then there is a thermoelectric potential between the two ends (as shown in the figure below)
的原理: The principle of explosion-proof thermocouple :
Utilizing the gap explosion isolation principle, design the junction box and other components with sufficient strength, and seal all the components that will produce sparks, arcs and dangerous temperatures in the junction box. Cool down so that the flames and temperature after the explosion are not transmitted outside the cavity.
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
的标志EXdⅡCT6,适用于ⅡC级以下,引燃温度T6以上,含爆炸性气体场合的温度测量。 Explosion-proof thermocouple mark EXdⅡCT6, suitable for temperature measurement below IIC level, ignition temperature above T6, and in the presence of explosive gas.
W temperature meter
Material of temperature sensing element
N nickel chromium-copper nickel
E nickel chromium-nickel silicon
F iron-copper nickel
C copper-copper nickel
Even wire logarithm
Installation fixed form
2 fixed thread
4 fixed flange
6 fixed thread taper
Junction box form
Protection tube diameter