Figure 50: Text Detail - Marking Example For Approved Ex I - WAGO 753-668/000-004 Manual

142 Use in Hazardous Environments
Figure 50: Text Detail – Marking Example for Approved Ex i I/O Modules According to CEC 18
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Table 55: Description of Marking Example for Approved Ex i I/O Modules According to CEC 18
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Marking
Dust
Ex
nA
[ia IIIC]
IIC
T4
Gc
X
Gases
Ex
nA
[ia Ga]
IIC
T4
Gc
X
Manual
Version 1.0.0, valid from HW/SW Version 01/01
753-668/000-004 4FAI 0/4-20 mA Diff PROFIsafe
Description
Explosion protection mark
Type of protection
Type of protection and equipment protection
level (EPL): Associated apparatus with intrinsic
safety circuits for use in Zone 20
Group
Temperature class
Equipment protection level (EPL)
Symbol used to denote specific conditions of use
Explosion protection mark
Type of protection
Type of protection and equipment protection
level (EPL): Associated apparatus with intrinsic
safety circuits for use in Zone 0
Group
Temperature class
Equipment protection level (EPL)
Symbol used to denote specific conditions of use
WAGO-I/O-SYSTEM 750