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Sensor range for use with GS300Mc

SGF104 Oxygen Sensor

SG895 ATEX Sensor

SG500 Methane or LPG Sensor

Technical Specification

Gas(es) Detected

Methane, LPG, Ammonia, Hydrogen, Acetylene, Gasoline, 

Methanol, Ethanol, White Spirit, Acetone, Hexane, 

Ethyl Acetate, Toluene

Dimensions

Width 100mm 

|

 Height 133mm 

|

 Depth 70mm

Sensor Technology

Pellistor

Settings

0-20% LEL (0-300ppm for Carbon Monoxide)

Output Signal

4-20mA

Sensor range

0 - 100% of LEL or diff. in ppm

Working Temperature

-10°C to +70°C

Autosetting

Yes

Protective Rating

IP65

Approvals

ATEX RATED EN60079-0, EN60079-1, EN61241-0 & 

EN61241-1 Compliance

Technical Specification

Gas(es) Detected

Oxygen

Dimensions

Width 100mm 

|

 Height 100mm 

|

 Depth 60mm

Sensor Technology

Optical (Fluorescence based)

Settings

19.5 or 18.5% of O

2

 (depletion), 22.5, 23.5% (excess)

Output Signal

4-20mA

Sensor range

0-25%

Working Temperature

-30°C to +60°C

Autosetting

Yes

Protective Rating

IP64

Approvals

EN50104 and EN50270 Compliant

Technical Specification

Gas(es) Detected

Methane or LPG

Dimensions

Width 110mm 

|

 Height 50mm 

|

 Depth 35mm

Sensor Technology

Catalytic

Settings

N/A

Output Signal

4-20mA

Sensor range

0-20% LEL

Working Temperature

-0°C to +40°C

Autosetting

No

Protective Rating

IP30 (Enclosure)

Approvals

N/A

Calibration Gas

Available in 12L & 110L Cannisters

Valves and other spares  also availa-

ble

4-20mA

4-20mA

4-20mA

IP64

IP65

IP30

10+ 

Gases

LPG

Methane

O

2

Summary of Contents for GS300Mc

Page 1: ...ks 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 ...

Page 2: ...ring on or off Please note GS300Mc will only be able to detect O2 and no other gases when set to on The GS300Mc has one fault relay that breaks the connection in case of system failure This can be used to constantly monitor the operation of the controller remotely eg through a BMS The relay driving technology de energized when triggered will ensure a prompt indication even in case of mains power f...

Page 3: ... and the Main Alarm relay is actuated 11 FAULT LED illuminates to Indicate short circuit sensor fault loss of signal incorrect sensor connection or failure In case of sensor failure LED will flash when relevant sensor is scanned 12 LEL EXPLOSIVE LED illuminates when internal DIP switch CO GAS for a sensor is moved to GAS Explosive position As the sensor value is displayed the corresponding LED for...

Page 4: ... until full operation phase LCD Display Interface Warm up Phase Normal Condition Alarm Condition Toxic ppm setting Alarm Condition Explosive LEL setting Fault Condition A Green backlit digital display indicates normal condition The display shows an absense of a gas leakage at sensor 1 A Red backlit display indicates there is an alarm condition ppm parts per million label shows a sensor is for dete...

Page 5: ...osition the GS300Mc is configured to indicate oxygen levels The function is determined by setting either excess oxygen or oxygen depletion on the sensor itself Duomo SGF104 Example shows oxygen monitoring ON IMPORTANT NOTE If Oxygen setting is selected it is not possible to connect any other types of sensors for any other gases For example natural Gas or CO Right switch on any of the 1st 3 double ...

Page 6: ...s advisable The wiring should be performed by a qualified person in accordance with current regulations The plug in terminal rail makes installation easy and quick Do not mount close to any heat source or in an area where moisture is likely to effect operation The IP rating of this unit is IP44 Sensors should be positioned as shown below If you require any guidance on this please call Duomo techni...

Page 7: ...ange 0 300ppm Working Temperature 10 C to 60 C Autosetting Yes Protective Rating IP55 Approvals EN50270 EN45544 1 3 Compliant Technical Specification Gas es Detected Carbon Monoxide Dimensions Width 100mm Height 100mm Depth 60mm Display N A Sensor Technology Electrochemical Settings Preset to TWA and STEL Standards Output Signal 4 20mA Sensor range 0 300ppm Working Temperature 15 C to 40 C Autoset...

Page 8: ...liance Technical Specification Gas es Detected Oxygen Dimensions Width 100mm Height 100mm Depth 60mm Sensor Technology Optical Fluorescence based Settings 19 5 or 18 5 of O2 depletion 22 5 23 5 excess Output Signal 4 20mA Sensor range 0 25 Working Temperature 30 C to 60 C Autosetting Yes Protective Rating IP64 Approvals EN50104 and EN50270 Compliant Technical Specification Gas es Detected Methane ...

Page 9: ...1st ALARM outputs listed in step a are all deactivated Relay LED and Terminal connections Pre Alarm no 2 relay actuated 2nd ALARM LED illuminates and Terminal 8 and 9 will be connected c At 20 LEL 300ppm reading The Main Alarm relay is actuated MAIN ALARM LED illuminates and Terminal 10 and 11 will be connected and terminals 10 and 12 will be broken and the audible alarm will continue to sound Wit...

Page 10: ...n the open position The function of the alarm relays both the Pre Alarm and the Main Alarm can be checked by pressing the TEST button on the detector fascia Check that the main alarm action is configured for a latching alarm Switch 2 on 5th DIP switch See Configuring the GS300Mc There is no supply to the solenoid valve The Main Alarm relay is a volt free contact therfore you must connect the live ...

Page 11: ...sful A Duomo Commissioning Certificate is provided A certificate from the original maufacturer ensures that the commisioning or servicing carried out is at a high professional standard by a competent and qualified service engineer It is prudent to make electrical connection to the detector terminal plus when withdrawn and leave the plug off the detector so that the Duomo Engineer is the first to p...

Page 12: ...estershire WR9 9AH GAS SAFETY CONTROLS DuomoUK linkedin com company duomo uk GS300Mc 20072021 rev7 This document is protected by copyright No changes by others are permitted without prior authorisation by Duomo UK Ltd Duomo UK Ltd reserve the right to modify and revise this datasheet without notification ...

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