78 Use in Hazardous Environments
WAGO I/O System 750
750-482/000-001 2AI 4-20mA HART NAMUR NE43
Manual
Version 1.0.2
Table 42: Description of the Marking Example per ATEX and IECEx
Marking Text
Description
TUEV 07 ATEX 554086 X
IECEx TUN 09.0001 X
Approving authority or certificate numbers
Dust
II
Device group: All except mining
3 D
Device category 3 (Zone 22)
Ex
Explosion protection mark
tc
Protection type: Protection by enclosure
IIIC
Dust group: Explosive dust atmosphere
T135°C
Maximum surface temperature of the enclosure
(no dust bin)
Dc
Level of equipment protection (EPL)
Mining
I
Device group: Mining
M2
Device category: High degree of safety
Ex
Explosion protection mark
d
Protection type: Pressure-tight encapsulation
I
Electrical devices in potentially explosive mines
Mb
Level of equipment protection (EPL)
Gases
II
Device group: All except mining
3 G
Device category 3 (Zone 2)
Ex
Explosion protection mark
nA
Protection type: Non-sparking equipment
IIC
Gas group: Explosive gas atmosphere
T4
Temperature class: Max. surface temperature
135 °C
Gc
Level of equipment protection (EPL)