before throwing insults you may need to look within yourself with fellow experienced engineers here when showing your immaturity and plain inexperience , so other words look ,learn and take note from these good people instead of trying to look big and at the same time looking/sounding like an idiot 😉
you still haven't answered my question and you keep swerving the question .
what are you looking for when FGAing a gas fire ?
maybe a little help … how does O2 effect your readings ?
what about levels of CO ? 🙂🙂🙂