Product description
4.2
Device Category According to ATEX Classification
Applies only within the EU and in countries in which the ATEX Directive (2014/34/EU) also applies. The
ATEX marking is located on the left outside of the casing.
4.2.1
Device category not intended for installation in an Ex-zone
Marking per ATEX with
II 2/- G IIA
Gas-carrying pipes with inflammable or explosive gas of explosion group IIA (e.g. biogas) may be
connected to the device at the appropriate point (zone 2 or 1 in the interior of the line). The device itself
has to be installed outside of a hazardous atmosphere.
4.2.2
Device category intended for installation in an Ex-zone 2
Marking per ATEX and IEC EN 60079 with
II 2/3 G Ex nC ec IIA/IIC T1 Gc X
Gas pipes with combustible or explosive gas (zone 2 or 1 inside the pipe) may be attached to the device
at the designated and appropriate place. The suitable detonation arrester must be used with gas IIB or
IIC. The device itself may be installed in zone 2 gas IIC: Electrical connections must not be separated
under voltage. The volume inside the device must be detected by means of a suitable warning sensor
and the power circuits have to be disconnected from mains if necessary. The types of protection nC and
ec refer to the outside of the display and the integrated terminal box respectively.
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