BECKHOFF EL1904 - Manual (Page 31)

Operation
EL1904 29
4.2.2 Identification
Beckhoff fieldbus components that are certified for use in potentially explosive atmospheres bear one of
the following markings:
II 3 G Ex nA II T4 KEMA 10ATEX0075 X Ta: 0 - 55°C
or
II 3 G Ex nA nC IIC T4 KEMA 10ATEX0075 X Ta: 0 - 55°C
4.2.3 Date code and serial number
The TwinSAFE terminals bear a date code, which is composed as follows:
Date code: CW YY SW HW
Legend:
CW:
Calendar week of manufacture
YY: Year of manufacture
SW: Software version
HW: Hardware version
Example: Date code 29 10 02 01
Calendar week:
29
Year: 2010
Software version: 02
Hardware version: 01
In addition the TwinSAFE terminals bear a unique serial number.
4.2.4 Further ATEX documentation
Note
Please also refer to the further documentation
Notes regarding application of the Bus Terminal system in areas potentially explosive
atmosphere are available in the Download section of the Beckhoff website at
http://www.beckhoff.de .