Duomo GS100M - User Manual

GS100M Gas Detection Controller
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1
GS100M 1 Zone Gas Detection Controller
FEATURES
■ Single Zone Protection
■ Positive Safety Option
■ Detection of Toxic 0-300ppm / Explosive Gas(es) 0-20%LEL /
■ 4-20mA signal sensor input
■ 3 Alarm Stages - 1st & 2nd Pre Alarm and Main Alarm
■ IP44 Protective Rating
■ CE Certied and approved to EN61010-1 and EN50270
■ 2 Year Guarantee - 3 Year by Registering at duomo.co.uk
OPERATION
The GS100M can be congured to detect explosive or toxic
gases. An LED display indicates sensor statuses and faults. When
the connected sensor detects the presence of the target gas a
proportional 4-20mA signal is sent to the detector.
The GS100M 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-o󰀨 valve (SSOV). A separate volt-free sensor
fault relay actuates if the correct return signal is not sensed by the
detector.
SPECIFICATION
Power
Power Supply
230V AC 50Hz ± 10%
Secondary Battery 12V DC ± 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 Specication
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
Conguration
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 Specication
No. of Remote Sensors 1
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, Certications and Guarantee
Approvals EN 61010-1 EN50270
Guarantee 2 Year as Standard
3 Year by Registering at www.duomo.co.uk
Conventional
4-20mA
IP44
EN61010-1
EN50270
1
Zone / Sensor
Positive
Safety

Duomo GS100M Specifications