ATEX Dust and Gas Zones

ATEX Dust and Gas Zones

Zone 2

Explosive atmosphere from gaseous by-product not likely to occur in normal operation and only for short periods of time.

Category 3

Zone 1

Explosive atmosphere from gaseous by-product likely to occur in normal operation occasionally.

Category 2

Zone 0

Explosive atmosphere from gaseous by-product continually present

Category 1

Zone 20

Explosive atmosphere from dusts continually present

Category 1

Zone 21

Explosive atmosphere from dusts likely to occur in normal operation occasionally.

Category 2

Zone 22

Explosive atmosphere from dusts not likely to occur in normal operation and only for short periods of time.

Category 3