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t: 

01905 797989

e: 

[email protected]

 | w: 

www.duomo.co.uk

1

FEATURES

 

Natural Gas or Propane detection sensor

 

Catalytic Sensor Technology

 

4-20mA signal sensor output

 

Automatic Calibration

 

Sintered Head

 

IP55 Protective Rating

 

CE Certified and approved to EN50194

 

2 Year Guarantee - 3 Year by Registering at duomo.co.uk

APPLICATION

Duomo is recognised within the gas industry for providing a 

comprehensive range of low cost, high reliability gas detection for 

many applications. We have installed and commissioned natural gas 

and carbon monoxide sensors in applications such as boiler rooms, 

kitchens, car parks, factories and shopping centres. The SGM595 

is the gas sensor used with the complete range of Duomo detector 

panels. All Duomo products are manufactured to meet relevant 

European Normatives and proposals for explosive and toxic gases.

OPERATION

When the SGM595 senses the presence of gas it sends a 4 - 20mA 

signal to the detector proportional to the level of gas. The detector 

then operates a prealarm relay - used for remote sirens or visual 

indicators if the level of gas continues to rise then the main alarm 

relay is activated to break the electrical supply to a safety shut off 

valve, and is fixed at 20% LEL of Natural Gas or LPG.

The SGM595 microprocessor conducts both self diagnostics and 

automatically calibrates the sensor when ambient conditions vary, 

thus avoiding false alarms. 

SGM595 

Natural Gas / Propane Sensor

4-20mA

IP55

Propane

Natural 

Gas

SPECIFICATION

Power

Power Supply

12-24V DC ± 10% from controller

Power Consumption

80mA at 13.8V

Relay contact range

Technical Specification

Gas(es) Detected

L.P.G or Natural Gas

Sensor Technology

Catalytic

Dimensions

Width 76mm 

|

 Height 176mm 

|

 Depth 57mm

LED indicator

Green: Power ON

Mounting

Wall Mounted

Output Signal

4-20mA

Device Precision

1% FS

Clean Air Shift

< ± 3% LEL

Reaction Time

<10 seconds

Autosetting

Yes

Working Temperature

-10°C to 40°C

Functioning Humidity
Protective Rating

IP55

Perhipheral Specification

Maximum Sensor Distance

100m

Cable Diameter for Sensors

1mm

2

 CSA 

(Screened and earthed at the controller end)

Compatibility

Controller Compatibility

All Conventional Duomo Controllers 

(Not Addressable BXI32)

Calibration Gas Compatibility

Duomo test Gases 

Approvals, Certifications and Guarantee

Approvals

CE Certification: No.96125

Guarantee

2 Year as Standard 

3 Year by Registering at www.duomo.co.uk

Expected Lifespan 5 years

Summary of Contents for SGM595

Page 1: ...rise then the main alarm relay is activated to break the electrical supply to a safety shut off valve and is fixed at 20 LEL of Natural Gas or LPG The SGM595 microprocessor conducts both self diagnostics and automatically calibrates the sensor when ambient conditions vary thus avoiding false alarms SGM595 Natural Gas Propane Sensor 4 20mA IP55 Propane Natural Gas SPECIFICATION Power Power Supply 1...

Page 2: ...maging the sensor Disabling the sensor or the controller must be carried out by a suitably trained technician Every year a more accurate check must be performed by qualified personnel Please call Duomo UK on 01905 797989 Overall Dimensions mm Important Notes IMPORTANT Assembly maintenance of the appliance must be carried out by qualified personnel and in accordance with applicable laws and regulat...

Page 3: ...ON LED This LED illuminates Green when power is ON and the sensor has a power supply from the controller Flashing red indicates gas is being detected Constant red indicates alarm state Constant Amber indicates fault condition DIAGNOSTIC PORT This can be connected to a A hand held datalogger that can printout information about the sensor serial number powering up information sensor condition alarm ...

Page 4: ...0V 230V 230V 230V 4 20mA Input Self Diagnostic Manual Test Internal Alarm Emergency Stop Function Alarm Stages Pre Alarm Main Alarm 1st Alarm 2nd Alarm Main Alarm 1st Alarm 2nd Alarm Main Alarm 1st Alarm 2nd Alarm Main Alarm 1st Alarm 2nd Alarm Main Alarm Pre Alarm Main Alarm O2 Monitoring Positive Safety IP Rating IP42 IP44 IP44 IP44 IP44 IP65 Extended Guarantee 3 Year 3 Year 3 Year 3 Year 3 Year...

Page 5: ...tory on 01905 797989 or email us sales duomo co uk Important Notes Always check the wiring before powering up the system When replacing sensors never seperate a sensing head from its PCB The sensor will have been calibrated using this particular board and therefore will not function correctly with any other Do not test this sensor with anything other than Duomo test gas Concentrations above this w...

Page 6: ...shooting and FAQs become apparent If your issue is not listed here please call Duomo UK on 01905 797989 and inform us so we can list your issue and associated solution here In case of alarm Extinguish any naked flames Do not switch lights or electrical devices on or off Open all windows and door to increase ventalation If the ALARM LED is off the levels of gas have dropped A responsible qualified ...

Page 7: ...g is successful 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...

Page 8: ...cestershire WR9 9AH DuomoUK linkedin com company duomo uk SGM595 11032021 rev2 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 GAS SAFETY CONTROLS ...

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