Outline 
 Industrial explosion-proof thermocouple is a temperature sensor in the chemical industry wide application of automatic control systems, through the temperature sensor, can control the temperature of the object parameters into electrical signals and passes to the display, record and adjust the instrument, the system implementation of detection, regulation and control. 
 In the chemical plant, production site often accompanied by a variety of flammable, explosive and other chemical gases, steam, if ordinary thermocouple is very insecure, vulnerable to the environment caused by gas explosion. Thus, in these situations must be explosion-proof thermocouple for temperature sensors, the company's explosion-proof thermocouple products for group d Ⅱ CT6 temperature range of explosive gases in dangerous places. 
 How it works: 
 If two different components of the homogeneous conductor (heat electrode) composed of a closed loop, when both ends of the temperature gradient exists, the loop current through there, then there is between the ends of thermoelectric power (shown below) 

 Explosion-proof principle: 
 Use of space explosion theory, design of adequate strength of junction boxes and other components, all will produce sparks, arcs and dangerous parts are sealed in the temperature of the junction box when the explosion chamber, the flame through the joints and gaps cooling, so that after the explosion of flames and spread to the cavity temperature 

 Features: 
 According to the latest IEC standards in line with international regulations GB3836 explosion-proof design; 
 Explosion two-cavity structure, the replacement of temperature measurement devices is simple, safe and reliable 
 Explosion-proof mark d Ⅱ CT6, for Ⅱ C grade below ignition temperature above T6, with explosive gas temperature measurement occasions. 

 Selection Method: 

 W Temperature Meter 
 R Thermocouple 
 Temperature sensing material 
 N nickel-chromium - copper-nickel 
 E NiCr - Nickel Silicon 
 F iron - copper-nickel 
 C copper - copper-nickel 
 Thermocouple wire to the number of 
 None - Single 
 2 - Dual support mounting form 
 2 fixed thread 
 4 fixed flange 
 Fixed threaded cone form 6 
 Junction box in the form 
 4-- explosion-proof type 
 Protection tube diameter 
 0-φ16 
 1-φ20