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INSTRUCTION MANUAL
GNExS1
Alarm Horn Sounder with relay / telephone initiate
For use in Flammable Gas Atmospheres
2) Warnings
DO NOT OPEN WHEN ENERGISED.
DO NOT OPEN WHEN AN EXPLOSIVE ATMOSPHERE IS
PRESENT.
POTENTIAL ELECTROSTATIC CHARGING HAZARD.
ALL ENTRIES M20 X 1.5MM.
IF TEMPERATURE EXCEEDS 70°C AT ENTRY OR 80°C
AT BRANCHING POINT USE SUITABLE RATED CABLE
AND CABLE GLANDS.
IF OPENING THE UNIT DURING MAINTENANCE
OPERATIONS A CLEAN ENVIRONMENT MUST BE
MAINTAINED AND ANY DUST LAYER REMOVED PRIOR
TO OPENING THE UNIT.
3) Marking & Rating Information
All units have a rating label, which carries the following
important information.
Products may have further approvals, see E2S website for
further details.
ATEX / IECEx / UKEX Ratings
Standards
EN60079-0:2018 EN IEC60079-0:2018
General Requirements
EN60079-1:2014 A/C:2018 EN 60079-1:2014 ed. 7
Flameproof Enclosure 'd'
Model No:
GNExS1DC024-T
Ex db IIC T4 Gb for Ta –60°C to +50°C
GNExS1AC230-T
Ex db IIC T3 Gb for Ta –60°C to +70°C
Ex db IIB T6 Gb for Ta –60°C to +50°C
Ex db IIB T5 Gb for Ta –60°C to +65°C
Ex db IIB T4 Gb for Ta –60°C to +70°C
Certificate No.
SIRA 13ATEX1139X
IECEx SIR 13.0029X
CSAE 21UKEX1558X
Epsilon x
Equipment Group
and Category:
CE Marking and
Notified Body No.
UKCA Marking and
Notified Body No.
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
Document No. D157-00-681-IS
Rating
II 2G
2813
0518
Issue 1
27-04-2023
4) Zones, Gas Group, Category and
Temperature Classification
The units can be installed in locations with the following
conditions:
Area Classification
Explosive gas air mixture likely to occur in
Zone 1
normal operation.
Explosive gas air mixture not likely to occur in
Zone 2
normal operation, and if it does, it will only exist
for a short time.
Gas Groupings
Group IIA
Propane
Group IIB
Ethylene
Group IIC
Hydrogen and Acetylene
Temperature Classification for Gas Applications
T1
450
o
C
o
T2
300
C
T3
200
o
C
T4
135
o
C
T5
100ºC
T6
85ºC
Equipment Category
2G
Ambient Temperature Range
GNExS1
-60°C to +70°C
IP6X to EN/IEC60079-0
IP66 to EN60529
www.e2s.com
IP Rating
Tel: +44 (0)208 743 8880
Sheet 2 of 6
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