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11.2 Information regarding the unit, protective systems and components
Example of designation
side/outside)
Group
Category( 2 inside / 3 outside)
G for gas, D for dust
Ignition protection type (abbr.)
Temperature class
Evidence of compliance with EC - Directive 2014/34/EC
The manufacturer declares conformity to ATEX, in addition to equipment in category 2, the
technical documentation in accordance with EC Directive 94/9/EC of TÜV South Germany
deposited.
Type of use:
II 3 G c T3 (inside)
The AHU are designed for processing and transport of explosive atmospheres of Zone 2 but
not for installation in Zone 2.
Equipment in this category provides in normal operation, the required level of security.
II 2 G c T3 (inside)
The AHU are designed for processing and transport of explosive atmospheres of zone 1 but
not for installation in Zone 1.
The device-specific explosion protection measures in this category must provide themselves
with frequent disturbances or equipment faults, which normally have to be considered, the
required level of security.
II 2/3 G c T3 (inside / outside)
The AHU are used for processing and transport of explosive atmospheres of zone 1 and for
installation in Zone 2.
The device-specific explosion protection, inside this category must provide themselves with
frequent disturbances or equipment faults, which normally have to be considered, the re-
quired level of security.
II
2/3
G
c
T3 (in-
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