__________________________________________________________________________________________________________________________________
European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH [email protected] Tel: +44 (0)208 743 8880
www.e-2-s.com Fax: +44 (0)208 740 4200
Document No. IS 2451-P Issue E 19-02-10 Sheet 1 of 4 (1)
INSTRUCTION MANUAL (ATEX / IECEx)
BExDS120D and BExDS110D
Flameproof Sounders
For use in Flammable Gas and Dust Atmospheres
1) Introduction
The BExDS120D and BExDS110D are flameproof sounders
which are certified to meet the requirements of the ATEX
directive 94/9/EC and the IECEx scheme. The sounders
produce loud warning signals and can be used in hazardous
areas where potentially flammable gas and dust 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 BExDS120D unit produces
output levels in the 117dB(A) range and the BExDS110D 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. For ambient temperatures over +55ºC the gas groups
are limited to IIA and IIB. They can also be used in Zone 21
and Zone 22 areas for combustible dusts and have an IP rating
of IP 67 and a surface temperature rating of T100ºC up to
+55ºC and T115ºC over +55ºC.
2) Marking
All units have a rating label, which carries the following
important information:-
Input Voltage: DC Units 12V or 24V or 48V
AC Units 230V or 110V or 115V
Codes:
Ex d IIC T4 for Ta –50°C to +55ºC
Ex d IIB T4 for Ta –50°C to +70ºC
Ex tD A21 IP67 T115°C based on max Ta of +70°C
Certificate No’s
KEMA 99ATEX6312
IECEx KEM 10.0003
“Warnings
”
DO NOT OPEN WHEN AN EXPLOSIVE
GAS OR DUST ATMOSPHERE IS PRESENT
COVER BOLTS CLASS A4-80
USE HEAT RESISTING CABLES AND CABLE GLANDS
(Rated 110ºC) AT AMB. TEMPERATURES OVER 40ºC
Year of Construction /
Serial No.
i.e. 10 / 1DS22000001
3)
Type Approval Standards
The sounders have EC Type Examination and IECEx
certificates issued by KEMA and have been approved to the
following standards:-
EN60079-0:2006 IEC60079-0:2004 (Ed4)
General Requirements
EN60079-1:2007 IEC60079-1:2007
(Ed6)
Flameproof Enclosure ‘d’
EN61241-0:2006 IEC61241-0:2004 (Ed1) Dust General
Requirements
EN61241-1:2004 IEC60079-1:2004 (Ed1) Dust Enclosures tD
4)
Installation Requirements
The sounders must be installed in accordance with the latest
issues of the relevant parts of the EN60079 standards or the
equivalent IEC standards – Selection, Installation and
maintenance of electrical apparatus for use in potentially
explosive atmospheres (other than mining applications or
explosive processing and manufacture):-
EN60079-14:2008
Electrical Installations in Hazardous
IEC60079-14:2007 (Ed4)
Areas (other than mines)
EN60079-10:2003
Classification of Hazardous Areas
IEC60079-10:2008 (Ed1)
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, IP Rating and
Temperature Classification
The BExDS120D and BExDS110D sounders have been
certified Ex de IIC T4 for Ta –50°C to +55ºC and Ex de IIB T4
for Ta –50°C to +70ºC for gas and Ex tD A21 IP67 T115ºC
based on max. Ta of +70ºC for dust. This means that the units
can be installed in locations with the following conditions:-
Area Classification Gas:
Zone 1
Explosive gas air mixture likely to occur in
normal operation.
Zone 2
Explosive gas air mixture not likely to occur,
and if it does, it will only exist for a short time.
Gas Groupings:
Group IIA
Propane
Group IIB
Ethylene
Group IIC (Up to +55ºC only) Hydrogen and Acetylene
Temperature Classification:
T1
400
o
C
T2
300
o
C
T3
200
o
C
T4
135
o
C
0518
II 2G/D
Epsilon x:
Equipment Group and
Category:
CE Marking:
Notified Body No.
