7
7
EN
11. VIEWS • CROSS-SECTION
21
2
151
28
Ø75
13
21
12. ATEX
II 3/- G Ex ic nA IIB T4 Gc
1
2
3
4
5
6
7
1
Marking of explosion-proof devices
2
Device group in accordance with directive 94/9/EC (Atex 95)
II
non-underground operation
3
Device categories of the assemblies used
3/-
extraction from explosion zone 2, installation exclusively in non-explosive zones
G
Gas
4
Ignition protection classes
Ex ic
intrinsic safety with the protection level “ic” – not capable of causing ignition in undisturbed operation
nA
non-sparking
5
Explosion groups in accordance with EN 60079-0:2011
IIB
the group has a safe gap value (MESG) of 0.5-0.9 mm, suitable e.g. for use of ethylene
6
Temperature class
T4
max. surface temperature of the equipment 135 °C
7
Protection level EPL pursuant to IEC 60079-0 (2007)
3/- G Gc
Suitability for extraction from explosion zone 2
1
2
3
4
Ventilator
Gas sensor
Filter
Voltage-free alarm contact
1
2
3
4
