Flue gas analyser
A portable electronic instrument that samples flue gases to measure oxygen and carbon monoxide and calculate carbon dioxide, the CO/CO2 ratio and efficiency.
Engineers use an analyser to check combustion performance during commissioning and servicing, and to investigate carbon monoxide concerns. Analysers need regular calibration by the manufacturer or an approved service centre.
BS 7967 gives guidance on using portable combustion gas analysers in homes.
CO/CO2 ratio calculator
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A plain-language explanation, not a technical procedure or legal advice. Follow the current regulations, industry procedures and manufacturer’s instructions.