1. Equipment for Zone 20 with “mD” Dust Explosion-Proof Type
Explosion-Proof Marking: Ex mD 20 T120°C
2. Equipment for Zone 20 with “ia” Dust Explosion-Proof Type
Explosion-Proof Marking: Ex iaD 20 T120°C
3. Equipment for Zone 21 with “pD” Dust Explosion-Proof Type
Explosion-Proof Marking: Ex pD 21 IP65 T120°C
4. Equipment for Zone 21 with “tD” Type A Dust Explosion-Proof; Temperature Testing Conducted Under 500mm Thick Dust Layer
Explosion-Proof Marking: Ex tD A21 IP65 T225°C T500 320°C
5. Equipment for Zone 22 with “tD” Type B Dust Explosion-Proof
Explosion-Proof Marking: Ex tD B22 IP65 T170°C
6. Equipment for Zone 22 with “tD” Type A Dust Explosion-Proof
Explosion-Proof Marking: Ex tD A22 IP54 T120°C
