8
5.52.181.01.01.07
3G/D
0,20,1,21
2G/D
0,20
3G
0,20,1,21,22
3D
0,20,1,21,2
2G
0,20,21,22
2D
0,20,1,2
2.6
Explosion protection
The EX classification of the unit is indicated on a
separate plate, situated on the unit.
Illustration 2
Example of ATEX classification:
II
2
G
IIB
c
T4
CE-marking
European Union
explosion-proof operating
material
II
device group / application
I
II
danger of mine damp
other areas prone to explosion
2
device category
1
2
3
Use in zone 0
Use in zone 1
Use in zone 2
G
EX atmosphere
G
D
....caused by gas, steam, fog
...caused by dust
IIB
explosion group
IIA
IIB
IIC
limit gap widths (MESG) > 0,9 mm
limit gap widths (MESG) 0,9 >= 0,5 mm
limit gap widths (MESG) < 0,5 mm
c
type of protection
c
k
construction safety
encapsulation of liquids
T4
Temperature class - gas-
es
(for dust only the temper-
ature in °C is stated)
T1
T2
T3
T4
T5
T6
limit temperature 450 °C
limit temperature 300 °C
limit temperature 200 °C
limit temperature 135 °C
limit temperature 100 °C
limit temperature 85 °C
2.6.1
EX-Category
EX- Zone
1+21
2+22
1+21
2+22
Device category
2
2
Expl.-group of gases
IIB
IIB
Temperature class - gases
Temperature class - dust
T4
135°C
T3
200°C
DANGER!
