... Unit Application: 1, Designed for Zone 1 and Zone 2 explosive atmosphere. 2, Designed for IIA,IIB,IIC groups explosive atmosphere. 3 ... ,static electricity resistance, impact resistance and good thermal reliability.2,Increased safety enclosure ,built-in explosion protection components.3,Built ... ~Φ14 mm Φ11 mm ~Φ18 mm10,Compliance with :GB 3836.1,GB 3836.2,GB 3836.3,IEC60079-0,IEC60079-1,IEC60079-7 Using ...