HAZARDOUS AREAS AND HAZARDOUS AREA EQUIPMENT

Explosion Protection Techniques

Types of Protection Techniques Data Table
Method Symbol Type of Protection
Exclusion Ex tD Dust-excluding ignition proof
Ex m Encapsulation
Ex n Non-sparking (hermetically sealed devices, sealed devices and restricted breathing)
Ex p Pressurized enclosure/Rooms
Ex q Sand-filled (powder filling)
Explosion containment Ex d Flameproof enclosure
Energy Limitation Ex i Intrinsic safety
Dilution Ex v Ventilation
Avoidance of ignition Ex e Increased safety
Ex n Non-sparking (inherently non-sparking)

 

Types of Application and Protection Techniques Data Table

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