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1
GS300M
3 Channel Gas Detection Controller
FEATURES
■
Three channel protection
■
230VAC supply
■
Wall or panel mounted
■
Positive safety option
■
Detection of Toxic 0-300ppm / Explosive Gas(es)
0-20%LEL
■
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
■
2 year guarantee - 3 year by registering at duomo.co.uk
OVERVIEW
The GS300M is a 230V three channel and sensor wall or panel
mounted gas detection controller. It can be connected to toxic and
explosive sensors. An LED 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 GS300M. 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 GS300M 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
11W Maximum @ 13.8V
Relay Contact Range
10A 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
N/A
Mounting
Wall or panel mounted
Input Signal
4-20mA
Device Precision
1% FS
Reaction Time
<10 seconds
Working Temperature
-10°C to 40°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
No
Emergency Stop Connections
No
O
2
Compatibility as Standard
No
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
Guarantee
2 year as standard
3 year by registering at www.duomo.co.uk
3
Channel
Conventional
4-20mA
IP44
Positive
Safety
