II

Potentially Explosive Atmospheres

2G EEx d IIB T4 U0470

IP- Rating according to IEC 529 EN 60529First IP Second

figure figure

None-protected 0 0 None-protected

Protected against solid Protected against vertically fallingobjects of 50 mm or more 1 1 water drops

Protected against solid Protected against vertically fallingobjects of 12,5 mm or more 2 2 water drops, when enclosure tilted up

to 15 degrees

Protected against solid Protected against spraying water upobjects of 2,5 mm or more 3 3 to 60 degrees from vertical position

Protected against solid Protected against splashing water objects of 1 mm or more 4 4 from any direction

5 4Dust-protected 5 5 Protected against jet water

from any direction

Dust-tight 6 6 Protected against poweful jet waterfrom any direction

7 Protected against water penetration upon temporary submersion in water

8 Protected against water penetration uponcontinuous submersion in water

Inflammablematerial

Oxygen

Ignition source

1) Confirmation of compliance to all relevantEU-Directives

2) Number of institution (Notified Body) whohave approved the manufacturers qualitysystem according to ATEX directive

3) Confirmation that the equipment is certifiedaccording to European standards

4) Name of certification institute (Notified Body)

5) Year of certification

6) Certification number

7) U = component, X = special conditions apply

Nemko 00 ATEX 3751) 2) 3) 4) 5) 6) 7)

Classification of gasesGasgroup Gas

IIA Ammoniac Ethanol Amylalcohol AcetaldehydMethan Butanol CyclohexanEthan Amylacetat HexanPropane Propanol Hydrogen-

sulphide

IIB Ethylen Tetrahydro- EthyleterEthylenoxid furan

IIC Hydrogen Acetylen Carbondisulphide

Temperature markingTemperature class T1 T2 T3 T4 T5 T6

Maximum surface 450°C 300°C 200°C 135°C 100°C 85°Ctemperature

Clasification of explosive areaInflammable Occurrencesubstance in the area Zone Equipment Equipment

groupcategory

Gas Continuous presence Zone 0 II 1G

Intermittent presence Zone 1 II 2G

Occasional presence Zone 2 II 3G

Dust Continuous presence Zone 20 II 1D

Intermittent presence Zone 21 II 2D

Occasional presence Zone 22 II 3D

Methan Mining I M1

Dust Mining I M2 or M1

Protection principlesMarking Protection Requirements IP-Req. For use CENELEC IEC

in Zone

General req. EN 50014 60079-0

EEx d Prevents an internal Flameproofexplosion to ignite enclosure None 1 and 2 EN 50018 60079-1the surroundingatmosphere

EEx e Prevents an ignition Increased IP-54 1 and 2 EN 50019 60079-7source to occure, due to safetysparks or high temperature

EEx i Energy limitation in Intrinsic IP-20 0, 1 and 2* EN 50020 60079-11sparks and safety EN 50039temperature

EEx p Explosive athmosphere Pressurized IP-40 1 and 2 EN 50016 60079-2separated from apparatusignition source

EEx m Explosive athmosphere Encapsulation None 1 and 2 EN 50028 60079-18separated fromignition source

EEx o Explosive athmosphere Oil IP-66 1 and 2 EN 50015 60079-6separated from immersionignition source

EEx q Explosive athmosphere Powder IP-54 1 and 2 EN 50017 60079-5separated from fillingignition source

EEx n As above, but All the above Variable 2 EN 50021 60079-15for use in Zone 2

* [ia] for Zone 0,1,2 and [ib] for Zone 1,2

ATEX