Bosch retroth WE6 6X Series Operating Instructions Manual page 20

20/52 Product information
Zones, device groups and
categories
Device group Category
according to according to
2014/34/EU 2014/34/EU
I M1
I M2
II 1G
II 2G
II 3G
II 1D
II 2D
II 3D
Bosch Rexroth AG, WE6..6X/...XE..., RE23178-XE-B/10.20
5.1.1 Explosion protection marking
The user/machine end-user has to classify potentially explosive atmospheres
according to EU directive 1999/92/EC into zones. In the following table,
the corresponding zones for device groups and categories are shown.
The valve may only be used in the areas and zones which correspond to the device
group and category. During use, also observe the other information on explosion
protection in "Data sheet 23178-XE".
Table 7: Device groups and categories
Area of application, properties (excerpt from the directives)
Firedamp areas (= device group I), i.e. underground parts of mines and their
overground systems. In case of an explosive atmosphere, further operation is
possible.
Very high safety level.
Firedamp areas (= device group I), i.e. underground parts of mines and their
overground systems. In case of an explosive atmosphere, it must be possible to
deactivate the device.
High safety level.
Potentially explosive atmospheres in which explosive gases, mists or vapors
(= device group II) occur permanently or for a long time or frequently.
Corresponds to zone 0 according to Directive 1999/92/EC.
Very high safety level.
Potentially explosive atmospheres where explosive gases, mists or vapors
(= device group II) are occasionally present.
Corresponds to zone 1 according to Directive 1999/92/EC.
High safety level.
Potentially explosive atmospheres in which explosive gases, mists or vapors
(= device group II) do not normally occur or only rarely or for a short time.
Corresponds to zone 2 according to Directive 1999/92/EC.
Normal safety level.
Potentially explosive atmospheres where explosive dust/air mixtures
(= device group II) are continually, long-term or often present.
Corresponds to zone 20 according to Directive 1999/92/EC.
Very high safety level.
Potentially explosive atmospheres where explosive dust/air mixtures
(= device group II) are occasionally present.
Corresponds to zone 21 according to Directive 1999/92/EC.
High safety level.
Potentially explosive atmospheres where an explosive atmosphere due to stirred
dust (= device group II) is normally not present or occurs only rarely or short-time.
Corresponds to zone 22 according to Directive 1999/92/EC.
Normal safety level.
Usable in zone
according to
1999/92/EC
-
-
0, 1, 2
1, 2
2
20, 21, 22
21, 22
22