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01905 797989
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www.duomo.co.uk
1
GS300MC
3 Channel Gas Detection Controller
FEATURES
■
Three channel protection
■
230VAC supply
■
Wall or panel mounted
■
Digital display with colour change feature
■
Emergency stop connections
■
Timed sensor test facility
■
Positive safety option
■
Detection of Toxic 0-300ppm / Explosive Gas(es)
0-20%LEL / Oxygen (O
2
) 0-25%
■
4-20mA signal sensor input
■
3 alarm stages - 1
st
& 2
nd
pre-alarm and main alarm
■
IP44 protective rating
■
CE certified and approved to EN 61010-1, EN 50270,
EN 50271, EN 45544-3, EN 60079-29-1, EN 50104
■
2 year guarantee - 3 year by registering at duomo.co.uk
OVERVIEW
The GS300Mc is a 230V three channel and sensor wall or panel
mounted gas detection controller. It can be connected to toxic and
explosive sensors. A colour change digital display indicates sensor
status and faults.
If the remote sensor senses the presence of gas, it sends a
proportional 4-20mA signal back to the GS300Mc. When the first
alarm level is reached the pre-alarm relay is activated (See Alarm
Settings). If the level continues to rise the main alarm relay will be
energised.
For explosive or toxic gases, the electrical supply to the safety shut
off valve is broken when the main alarm threshold is reached. A
general alarm is sounded.
Should the controller enter fault condition the safety shut off valve
closes to fail safe. A self-diagnostic feature looks for return sensor
voltage and ensures correct functionality.
The GS300Mc controller is compatible with all the Duomo
conventional sensors.
SPECIFICATION
Power
Power Supply
230VAC 50Hz ± 10%
Secondary Battery
12VDC ± 10% Max 2.2Ah
Battery Charger
Charger Capacity 2.2Ah
Power Consumption
12V - 4W Maximum
230V - 8.3W 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
2
Compatibility as Standard
Yes - Increase/Depletion
Perhipheral Specification
No. of Remote Sensors
1-3
Maximum Sensor Distance
100m
Cable Diameter for Sensors
1mm
2
CSA
(Screened and earthed at the controller end)
Compatibility
Sensor Compatibility
All Duomo Sensors
Approvals, Certifications and Guarantee
Approvals
EN 61010-1, EN 50270, EN 50271, EN 45544-3,
EN 60079-29-1, EN 50104
Guarantee
2 year as standard
3 year by registering at www.duomo.co.uk
3
Channel
Timed Test
Facility
Emergency Stop
Connections
IP44
8
8
8
Colour Change
Digital Display
