5
43
21
3
2
1
12 V
Battery
Sensor
8
7
6
5
Ph 4N 109
Ph
N
System
Fault
Relay Main
Alarm
Relay
Pre-Alarm
NC NC NC
C
C
C
NO NO
NO
Fuse
230V AC Voltage
8109
Relay Main
Alarm
NC
C
NO
Electrical Installation Installing A Sensor
The BX150 is a safety device designed to give audible alarms
and automatically provide latched electrical isolation of
associated gas safety shut off valves in the event of a gas leak or
build up of toxic gases. The sensor can be located up to 100m
from the gas detector. Cable size should be 1mm2 CSA. If the
sensor cables are run seperately in specific conduit it is not
essential to use screened cable but if the cables are routed
through conduit or trunking containing other wiring the use of
screened cable is advisable.The wiring should be performed by
a qualified person in accordance with current regulations. The
plug-in terminal rail makes installation easy and quick. Do not
mou nt close to any heat source or in an area where moisture is
likely to effect operation. The IP rating of this unit is IP44.
Sensors should be positioned as shown below. If you require
any guidance on this please call our technical help on 01905
797989.
The sensors must be mounted as shown below with
the sintered head pointing vertically down. When
replacing sensors never seperate a sensing head from
its PCB. The sensor will have been calibrated using
this particular board and therefore will not function
correctly with any other.
Important Notes
Always check the wiring before powering up the
system.
Do not test this sensor with anything other than
Duomo test gas (see 'BX150 Operation' section for
further information). Concentrations above this will
damage the sensor and shorten sensor life. The
installation of this gas detector does not release the
user from observing all the regulations concerning
the characteristics, installation and and the use of gas
appliances; the ventilation of the environment and
the elimination of combustion products in
accordance with the local recommendations,
regulations and bylaws. For any damage caused to
people, property or animals resulting from incorrect
connection, installation or application of this gas
detector Duomo will not be held responsible or liable.
To ensure correct function after installation Duomo
provide a commissioning service using calibrated test
gases. For this service call 01905 797989.
SGM595
autosetting
ON
SGM595
autosetting
ON
SGM595
autosetting
ON
300
1600
300
Natural Gas
Carbon
Monoxide
L.P.G.
Typical Wiring Schematic for BX150
Signal Terminal Block
Power Terminal Block * Intrinsic Safety
switch on
8
7
6
5
Ph 4
N109 5
4
3
2
1
3
2
1
12 V
Battery
Power Supply Unit
(If required)
12V
(Volt-free relays -
Link to energise)
(Optional standby
battery - If required)
w: www.duomo.co.uk - e: sales@duomo.co.uk - t: 01905 797989 - f: 01905 774296 | ©Duomo (UK) Ltd. 2007
12V Supply Typical
Configuration
230V Supply Typical
Configuration
