GFG Instruments


Mead O’Brien designs and provides GfG fixed monitoring systems for O2, CO2, ammonia, toxic gases, and combustible gases including single and multiple controller installations and transmitters using the latest technologies. We also provide newly installed startups and execute system maintenance contracts with electronic reporting.


  • Fixed Monitoring Systems
  • Oxygen (O2)
  • Carbon dioxide (CO2)
  • Ammonia
  • Toxic Gases
  • Combustible Gases
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