SG500 – Methane or LPG Gas Sensor

Gas Detection

When the SG500 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 pre-alarm 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.

Product Details

  • Detects either Natural Gas or LPG
  • 4-20mA signal
  • IP30 enclosure
  • Nemoto catalytic sensor technology
  • Low cost
  • Sensor active indicator
  • Compatible with BX116, BX444M, GS300M, GS100M and BX150
  • Comes with 2 year warranty (applicable for a 12 month extension)



Onsite Diagnostics

If you require onsite diagnostics or technical assistance with any of our products please give us a call

01905 797989

More Support

Duomo (UK) Ltd. offer detailed technical advice and support for our entire product range. Whether it's pre or post sales information you need we are here to help. If you can't find the information you need online then contact us direct.



Service Request

We recommend Duomo Gas Detection products are serviced at least annually to ensure efficacy and extend sensor life. Our qualified team of engineers are available Nationwide.

All rights reserved © Duomo 2019.