European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: +44 (0)208 743 8880
Document No. D156-00-401-IS
Issue 4
28-11-22
Sheet 3 of 7
Temperature Classification for Gas Applications
T1
450ºC
T2
300ºC
T3
200ºC
T4
135ºC
T5
100ºC
T6
85ºC (up to 65ºC ambient)
Dust Groupings
(ATEX / IECEx / UKEX only)
Group IIIA
Combustible Flyings
Group IIIB
Non-conductive Dust
Group IIIC
Conductive Dust
Maximum Surface Temperature for Dust Applications
(ATEX / IECEx / UKEX only)
GNExB2:
LD2DC024
LD2AC115
LD2AC230
85ºC
Equipment Category
2G / 2D
Ambient Temperature Range
-50°C to +70°C
IP Rating
IP6X to EN/IEC60079-0
IP66 to EN60529
5) Special Conditions for Safe Use
Repair of the flame path / cemented joints is not permitted.
Figure 1: Flame Path.
The enclosure is non-conducting and may generate an
ignition-capable level of electrostatic charges under certain
extreme conditions. The user should ensure that the
equipment is not installed in a location where it may be
subjected to external conditions that might cause a build-up
of electrostatic charges on non-conducting surfaces.
The stainless steel beacon guard is not earthed and may
generate an ignition-capable level of electrostatic charges. It
has a capacitance of 10pF according to EN/IEC60079-0,
clause 7.5.
6) Product Mounting and Access
6.1. Location and Mounting
The location of the beacons should be made with due regard
to the area over which the warning signal must be visible.
They should only be fixed to services that can carry the
weight of the unit.
The beacons should be securely bolted to a suitable surface
using the 9.4mm diameter bolt holes in the base of the unit
(see figure 2).
Figure 2: Fixing Location for B2 Beacon.
6.2. Access to the Flameproof Enclosure
In order to connect the electrical supply cables to the beacon
it is necessary to remove the flameproof cover to gain access
to the flameproof chamber. To access the Ex d chamber,
loosen the M4 grub screw on the beacon cover. Open the
enclosure by turning the beacon cover counterclockwise and
remove the cover, taking extreme care not to damage the
flameproof threads in the process (see figure 3).
Figure 3: Accessing the Explosion Proof Enclosure.
