PEX7250 Explosion Proof Alarm Annunciator - RTK - #2

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Technical Specification
Certification
ATEX certified to EN50014:1997, EN50018:1994 Group II, Category 2GD, EEx d IIB T5
Location
Zones 1 or 2. Gas Group, IIC, IIB or IIA, Temp Class up to T5
Certificate No.
Based on CESI00ATEX036U
Number of alarm ways
Systems are available in a vast range of sizes depending on window size from 1 to 56 points in a single enclosure.
Materials
The EEx d enclosure: copper-free cast alloy. EEx de Control Station and EEx e Terminal Box: GRP
Connections
The annunciator is wired to a row of terminals suitable for cable sizes up to 2.5mm2. On larger systems, the terminals are mounted within an EEx e terminal box below the EEx d enclosure.
Cable Entries
Five M20 cable entries are included as standard. Alternative quantity and size of metric or NPT threads can be provided on request.
Pushbuttons
Test, Accept and Reset are included as standard, additional control pushbuttons can be added as required. These are mounted in an attached, certified EEx de Control Station.
Cover
The cover is hinged as standard, to allow easy access for wiring and commissioning.
Outputs
Units are equipped with dual group relays and dual horn relays as standard. Individual repeat relays per channel and RS485 serial interface options are available on request.
Environment
Operating temperature: 0 to 50°C
Storage temperature: -20 to 80°C
Humidity: 0-95% RH, non-condensing
Protection
IP65 as standard, IP66 can be obtained using suitable sealant and gasket.
Detailed Specification
See the Series 725 datasheet for full details on the Alarm Annunciator specification.
Specials
The details shown here demonstrate our standard range of EEx d IIB Annunciators. RTK Instruments can quote for alternatives and IIC systems on request.
Push Button Control Station
432 mm
With Integral Terminals
Suitable for 4 to 20-way Annunciators
350mm (between centres)
^85 ^
TEST
ACK
o
RESET
ft* M 'or
8
j
B
E E o co co
J1L
loi loi lai-%
Cable entries
432mm
Push Button
Control Station
With Separate
Terminal
Enclosure
Suitable for 16 to 56-way Annunciators
350mm (between centres)
^85 (
TEST
o
ACK
o
o
G)
RESET
m
fol tö\ Ti Va
E E
o
CO CO
Terminal Enclosure
(typical dimensions shown)
400
Cable entries
E E
o
CO CN
1
Due to our policy of continuous product development, we reserve the right to amend specifications without notice.
RTK Instruments Limited Telephone: +44 (0)1423 580500
St James Business Park, Facsimile: +44 (0)1423 580501
Knaresborough, North Yorkshire, Web: www.rtkinstruments.com
England. HG5 8PJ Email: enquiry@rtkinstruments.com
Doc PEX7250-0

pageCatalog pdf di En 2012-06-22-01