Duomo GS300M Handbuch

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GS300M Gas Detection Controller

GS300M 3 Channel Gas Detection Controller

Channel

Conventional

Positive

Safety

4-20mA

IP44

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

& 2

■

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.

t: 01905 797989

e: [email protected] | w: www.duomo.co.uk

pre-alarm and main alarm

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

Emergency Stop Connections

Compatibility as Standard

Perhipheral Specification

No. of Remote Sensors

1-3

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, 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

CSA