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Tel: 0113 286 0166
Fax: 0113 287 8178
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Toxic/Flammable/Refrigerant
sensor combination |
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Standard
Unit 1 - 10 Sensors |
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Four
zone indicators |
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Single
cable for multiple sensors |
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Individual
Sensors with audible and visual
warning alarms |
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Sensors
pre-set and tested |
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Self
diagnostic |
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Pre
and full alarm indication |
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Two
alarm relays |
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Wall
or panel mount |
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Designed
for ease of installation |
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System
easily extended |
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Off
the shelf system |
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The GDS 202 gas leak detection system features a main
control unit connected to remote sensors via a single
3 core cable. The control unit is of an advanced design
using the latest technology and provides a high integrity
system whilst enabling a significant cost saving over
convential gas alarm systems.
Standard sensors for use in commercial and light industrial
applications such as laboratories, workshops, boiler
plant rooms etc are available for monitoring carbon
monoxide, flammable or refrigerant gases. Each sensor
incorporates a status LED and alarm sounder. Sensor
types may be mixed and up to 10 in number for the standard
control unit, or up to 20 when used with an optional
auxiliary power pack. Alternatively sensors may be used
separately without a control unit providing they are
powered by a 12 or 24volt DC supply.
Senors are also available for a wide range of special
gases in standard or certified flameproof enclosures
for hazardous area use in heavy industrial or petrochemical
installations.
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On power up, the green power indicator will flash for
3 minutes indicating that the sensors are stabililsing,
during this timed period all alarm functions are held
in the off condition.
After the stabilisation period, any sensor detecting
gas will provide a local visual (red LED) and audible
alarm, at the same time transmitting a signal to the
control unit where a pre alarm is indicated by an intermittent
audible alarm, with the red zone alarm LED flashing
and the pre alarm relay changing state. Should the gas
surrounding the sensor clear within 45 seconds the system
will return to the normal operating condition. However,
if the gas remains for longer than 45 seconds, full
alarm condition will occur and be indicated by the red
alarm LED and sounder going constant as well as the
full alarm relay activating.
The audible alarm may be silenced at any time but full
alarm indication will be latched until the gas has cleared
after which the system may be reset by pressing the
reset pad.
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Control Unit - A two-part screw together polycarbonate
enclosure houses the power supply alarm indicators,
control functions, and alarm relays. The enclosure may
be wall or panel mounted having cable entry from the
rear, bottom, top or sides.
Standard Sensors - Two-part push together plastic enclosure
that may be surface mounted using two fixing points
or attached directly to a standard conduit box, cable
entry is from the rear.
Hazardous area and special gas sensor - see data sheet
C389
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