1. 区域设备 20 和 “米德” Dust Explosion-Proof Type
Explosion-Proof Marking: 防爆mD 20 T120℃
2. 区域设备 20 和 “ia” 灰尘 Explosion-Proof Type
Explosion-Proof Marking: 防爆 20 T120℃
3. 区域设备 21 和 “压力” Dust Explosion-Proof Type
Explosion-Proof Marking: 爆炸pD 21 IP65 T120℃
4. 区域设备 21 和 “tD” Type A Dust Explosion-Proof; 温度 Testing Conducted Under 500mm Thick Dust Layer
Explosion-Proof Marking: Ex tD A21 IP65 T225℃ T500 320℃
5. 区域设备 22 和 “tD” Type B Dust Explosion-Proof
Explosion-Proof Marking: Ex tD B22 IP65 T170℃
6. 区域设备 22 和 “tD” Type A Dust Explosion-Proof
Explosion-Proof Marking: Ex tD A22 IP54 T120℃