38
Use in Hazardous Environments
WAGO-I/O-SYSTEM 750
750-455 4AI 4-20mA S.E.
Manual
Version 1.2.0
Table 18: Description of Marking Example for Approved Ex i I/O Modules According to ATEX and
IECEx
Gases
II
Equipment group: All except mining
3(1)G
Category 3 (Zone 2) equipment containing a safety
device for a category 1 (Zone 0) equipment
3(2)G
Category 3 (Zone 2) equipment containing a safety
device for a category 2 (Zone 1) equipment
Ex
Explosion protection mark
nA Gc
Type of protection and equipment protection level
(EPL): Non-sparking equipment
[ia Ga]
Type of protection and equipment protection level
(EPL): associated apparatus with intrinsic safety
circuits for use in Zone 0
[ia Gb]
Type of protection and equipment protection level
(EPL): associated apparatus with intrinsic safety
circuits for use in Zone 1
IIC
Explosion group of gas and vapours
T4
Temperature class: Max. surface temperature 135°C
Pos: 86.9 /Dokumentation allgemei n/Glieder ungselemente/---Seitenwechsel--- @ 3\mod_1221108045078_0.docx @ 21810 @ @ 1
