General Technical Specifications
Dezentrales Peripheriesystem ET 200S
EWA 4NEB 780 6024-01 07
7.5.2 Use of the ET 200S in a Zone 2 Hazardous Area
Zone 2
Hazardous areas are divided up into zones. The zones are distinguished according to
the probability of the existence of an explosive atmosphere.
Zone Explosion Hazard Example
2
Explosive gas atmosphere occurs
only seldom and for a short time
Areas around flange joints with flat gaskets
in pipes in enclosed spaces
Safe
area
No
• Outside zone 2
• Standard distributed I/O applications
Below you will find important information on the installation of the ET 200S distributed
I/O device in a hazardous area.
Further Information
You will find further information on the ET 200S and the various modules in the
manual.
Production Location
Siemens AG, Bereich A&D
Werner-von-Siemens-Straße 50
92224 Amberg
Germany
Certification
II 3 G EEx nA II T4 .. T5 to EN 50021 : 1999
Test number: KEMA 01ATEX1238 X
Note
Modules with II 3 G EEx nA II T4 .. T5 certification can only be installed in
ET 200S distributed I/O devices belonging to equipment category 3.
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