Duomo SGM595 Manual

Duomo SGM595 Manual

Natural gas / propane sensor

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SGM595 Gas Sensor
SGM595 Natural Gas / Propane Sensor
4-20mA
IP55
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.
t: 01905 797989
e: sales@duomo.co.uk | w: www.duomo.co.uk
Natural
SPECIFICATION
Gas
Power
Propane
Power Supply
Power Consumption
Relay contact range
Technical Specification
Gas(es) Detected
Sensor Technology
Dimensions
LED indicator
Mounting
Output Signal
Device Precision
Clean Air Shift
Reaction Time
Autosetting
Working Temperature
Functioning Humidity
Protective Rating
Perhipheral Specification
Maximum Sensor Distance
Cable Diameter for Sensors
Compatibility
Controller Compatibility
Calibration Gas Compatibility
Approvals, Certifications and Guarantee
Approvals
Guarantee
1
12-24V DC ± 10% from controller
80mA at 13.8V
L.P.G or Natural Gas
Catalytic
Width 76mm | Height 176mm | Depth 57mm
Green: Power ON
Wall Mounted
4-20mA
1% FS
< ± 3% LEL
<10 seconds
Yes
-10°C to 40°C
IP55
100m
1mm
CSA
2
(Screened and earthed at the controller end)
All Conventional Duomo Controllers
(Not Addressable BXI32)
Duomo test Gases
CE Certification: No.96125
2 Year as Standard
3 Year by Registering at www.duomo.co.uk
Expected Lifespan 5 years

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Summary of Contents for Duomo SGM595

  • Page 1 Expected Lifespan 5 years 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...
  • Page 2: Important Notes

    When doing the electrical connections, follow the drawing closely. Any use of the detector for purposes other than the intended one is considered improper and as a result of which Duomo (UK) therefore disclaims any responsibility for possible damages caused to people, animals or objects.
  • Page 3 Upon completion of the install measure the DC voltage between terminals 2 and 3 in the sensor plug. This is located at the top right hand corner of the SGM595 printed circuit board. If the reading is not between 0.8 - 0.9vDC you will need to trim JP1.
  • Page 4: Compatible Controllers

    Main Alarm Main Alarm Main Alarm Monitoring Positive Safety IP Rating IP42 IP44 IP44 IP44 IP44 IP65 Extended Guarantee * 3 Year 3 Year 3 Year 3 Year 3 Year 3 Year t: 01905 797989 e: sales@duomo.co.uk | w: www.duomo.co.uk...
  • Page 5: Sensor Orientation

    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 will damage the sensor and shorten sensor life.
  • Page 6: Troubleshooting

    This is a working document and will be updated as new troubleshooting 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.
  • Page 7 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 power up the unit on site. This allows wiring to be checked prior to commissioning and avoids damage due to incorrect connection.
  • Page 8 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. 01905 797989 www.duomo.co.uk sales@duomo.co.uk...

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