E2S BExS120E Technische Hinweise

1) Introduction
The BExS120E and BExS110E are second generation
flameproof / increased safety sounders which are certified to
the European Standards EN 50014: 1992, EN 50018: 1994
and EN50019: 1994 and meet the requirements of the ATEX
directive 94/9/EC. The sounders produce loud warning
signals and can be used in hazardous areas where
potentially flammable atmospheres may be present. Thirty-
two different first stage alarm sounds can be selected by
internal switches, and each one can be externally changed to
a second or third stage alarm sound (see tone table on Page
4). The BExS120E unit produces output levels in the
117dB(A) range and the BExS110E unit produces output
levels in the 110dB(A) range. Both sounders can be used in
Zone 1 and Zone 2 areas with gases in groups IIA, IIB and
IIC and temperature Classifications of T1, T2, T3 and T4.
2)
Marking
All units have a rating label, which carries the following
important information:-
BExS120E or BExS110E
Unit Type No.
Input Voltage: DC Units
AC Units
EEx de IIC T4 (T
Code:
KEMA 99ATEX6312
Certificate No.
Epsilon x:
Gas Group and
Category:
CE Marking:
Notified Body No.
Warnings:
DO NOT OPEN WHEN AN EXPLOSIVE
GAS ATMOSPHERE IS PRESENT
COVER BOLTS CLASS A4-80
USE HEAT RESISTING CABLES AND CABLE GLANDS
(Rated 95ºC) AT AMB. TEMPERATURES OVER 40ºC
Year of Construction /
Serial No.
3)
Type Approval Standards
The sounders have an EC Type examination certificate
issued by KEMA and have been approved to the following
standards:-
EN 50014 : 1992 + prA1General Requirements
EN 50018 : 1994 + prA1 Flameproof Enclosure 'd'
EN 50019 : 1994 + prA1Increased Safety 'e'
_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
Document No. IS 2422-P
INSTRUCTION MANUAL (ATEX)
Flameproof / Increased Safety Sounders
12V or 24V or 48V
230V or 110V or 115V
–50 to +55
amb.
II 2G
0344
i.e. 02 / 1S32000001
Issue B 17-04-02
BExS120E and BExS110E
4)
Installation Requirements
The sounders must be installed in accordance with the latest
issues of the relevant parts of the BS EN 60079
specifications or the equivalent IEC specifications –
Selection,
apparatus for use in potentially explosive atmospheres (other
than mining applications or explosive processing and
manufacture):-
BS EN 60079-14 : 1997
BS EN 60079-10 : 1996
The installation of the units must also be in accordance with
any local codes that may apply and should only be carried
out by a competent electrical engineer who has the
necessary training.
5)
Zones, Gas Group, Category and Temperature
Classification
The BExS120E and BExS110E sounders have been certified
EEx de IIC T4 (Tamb. –50 to +55ºC). This means that the
units can be installed in locations with the following
conditions:-
°
Area Classification:
C)
Zone 1
Zone 2
Gas Groupings:
Equipment Category:
Temperature Classification:
Ambient Temperature Range:
6)
Sounder Location and Mounting
The location of the sounders should be made with due regard
to the area over which the warning signal must be audible.
The sounders should only be fixed to services that can carry
the weight of the unit.
Sheet 1 of 4
Installation and maintenance
Electrical Installations in Hazardous
Areas (other than mines)
Classification of Hazardous Areas
Explosive gas air mixture likely to occur in
normal operation.
Explosive gas air mixture not likely to occur,
and if it does, it will only exist for a short time.
Group IIA Propane
Group IIB Ethylene
Group IIC Hydrogen and Acetylene
2G
o
T1 400 C
o
T2 300 C
o
T3 200 C
o
T4 135 C
-50°C to +55°C
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of electrical
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