WAGO-I/O-SYSTEM 750 XTR
Use in Hazardous Environments
45
750-559/040-000 4AO 0-10V DC /XTR
Manual
Version 1.3.0
Figure 18: Text Detail
– Marking Example for Approved Ex i I/O Module According to NEC 505
Table 25: Description of Marking Example for Approved Ex i I/O Module According to NEC 505
Marking
Description
CI I,
Explosion protection group
Zn 2
Area of application
AEx
Explosion protection mark
nA
Type of protection
[ia Ga]
Type of protection and equipment protection
level (EPL): Associated apparatus with intrinsic
safety circuits for use in Zone 20
IIC
Group
T4
Temperature class
Gc
Equipment protection level (EPL)
Figure 19: Text Detail
– Marking Example for Approved Ex i I/O Module According to NEC 506
Table 26: Description of Marking Example for Approved Ex i I/O Modules According to NEC 506
Marking
Description
CI I,
Explosion protection group
Zn 2
Area of application
AEx
Explosion protection mark
nA
Type of protection
[ia IIIC]
Type of protection and equipment protection
level (EPL): Associated apparatus with intrinsic
safety circuits for use in Zone 20
IIC
Group
T4
Temperature class
Gc
Equipment protection level (EPL)