16
 
ISBBS, ISDCS Operating Instructions
Option Y2
Potentially Explosive Atmosphere
For devices with option Y2 only: Directive 94/9/EC, “Equipment and protective 
systems intended for use in potentially explosive atmospheres"
Applicable European standards: 
EN 60079-0  General requirements 
EN 60079-15  Equipment protection by type of protection “n” 
EN 60079-31  Explosive atmospheres
  Equipment dust ignition protection by enclosure “t"