Duomo BX444Mc Manual

BX444Mc Gas Detection Controller
BX444MC 4 Zone Gas Detection Controller
4
Zone / Sensor
O
2
Monitoring
8888
Colour Change
Digital Display
Positive
Safety
IP44
EN61010-1
EN50270
FEATURES
■
4 Zone Protection
■
O depletion or excess monitoring
2
■
Digital display with colour change feature
■
Positive Safety Option
■
Detection of Toxic 0-300ppm / Explosive Gas(es) 0-20%LEL /
Oxygen (O ) 0-25%
2
■
4-20mA signal sensor input
■
3 Stages of Alarm - 1st & 2nd level and Main Alarm
■
IP44 Protective Rating
■
CE Certified and approved to EN61010-1 and EN50270
■
2 Year Guarantee - 3 Year by Registering at duomo.co.uk
OPERATION
The BX444Mc can be configured to detect explosive or toxic gases.
A back-lit colour display scrolls through each sensor and reports
their individual status. When any connected sensor detects the
presence of the target gas a proportional 4-20mA signal is sent to
the detector.
The BX444Mc then operates a pre-alarm relay (used for remote
sirens or visual indicators). If the level of gas continues to rise then
the second pre-alarm is actuated.
In the case of explosive gases, when the level of gas reaches 20%
LEL, the main alarm relay is activated to break the electrical supply
to the gas safety shut-off valve (SSOV). A separate volt-free sensor
fault relay actuates if the correct return signal is not sensed by the
detector.
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SPECIFICATION
Power
Power Supply
230V AC 50Hz ± 10%
Secondary Battery
12V DC ± 10% Max 2.2Ah
Battery Charger Charger Capacity 2.2Ah
Power Consumption
12V - 5W Maximum
230V - 9.3W Maximum
Relay contact range 10A resistive 250VAC, 5A 30VDC Resistive
Alarm Settings
Pre-Alarm No.1 8% LEL / 120ppm
Pre-Alarm No.2
13% LEL / 200ppm
Main Alarm
Fixed at 20% LEL / 300ppm
Sensor Fault
Short circuit, interruption, sensor deterioration
Technical Specification
Dimensions
Width 144mm | Height 144mm | Depth 110mm
Display Digital display with colour change feature
Mounting
Wall or Panel Mounted
Input Signal
4-20mA
Device Precision 1% FS
Reaction Time
<2 seconds
Working Temperature
-10°C to 60°C
Start-up Self Diagnostic Delay 90 seconds
Protective Rating
IP44
Configuration
Positive Safety Yes (ON/OFF)
Main Alarm Relay Actuation
Yes (Latching/Temporary Alarm)
Gas Type Selection
Yes (Toxic/Explosive)
Timed Sensor Test Facility Yes
Emergency Stop Connections
Yes
O Compatibility as Standard
Yes
2
Perhipheral Specification
No. of Remote Sensors
1-4
Maximum Sensor Distance
100m
Cable Diameter for Sensors 1mm
(Screened and earthed at the controller end)
Compatibility
Sensor Compatibility
All Duomo Sensors
Approvals, Certifications and Guarantee
Approvals
EN 61010-1 EN50270
Guarantee
2 Year as Standard
3 Year by Registering at www.duomo.co.uk
1
CSA
2