100 mm

Ex Signaling devicesATEX guarantees your safetyZones and categoriesPotentially explosive areas are defi ned in section 2of ElexV (Germany) as areas in which the atmospheremay be capable of explosion due to local and operationalconditions.It has proven to be useful to divide potentially explosiveareas into zones, taking into account different hazardscaused by explosive atmospheres.Definition of the zones according to section 2 para. 4 ELX (96)Potentially explosive areas due to combustible gasesZone 0 Zone 1 Zone 2Areas in which an explosive atmosphere ofgases, vapours or mists exists constantly,over long periods or frequently.Areas in which an explosive atmosphereof gases, vapours or mists occasionallyoccurs.Areas in which explosive atmospheres ofgases, vapours and mists normally neveroccur, but if they do, then only rarely andonly for short time periods.Potentially explosive areas due to combustible dustsZone 20 Zone 21 Zone 22Areas in which an explosive dustatmosphere exists constantly, overlong periods or frequently.Areas in which an explosive dustatmosphere occasionally occurs.Areas in which explosive dust atmospheresnormally never occur, but if they do, thenonly rarely and only for short time periods.The Ex devices are sub-divided analogue to the Ex zones into the following device categoriesDevice classification according to groups and categories:Group IGroup IICategory M Category 1 Category 2 Category 3G D G D G D1 2(gas)Zone 0(dust)Zone 20(gas)Zone 1(dust)Zone 21(gas)Zone 2(dust)Zone 22190