How To Use the testo 310 Combustion Analyzer 

I have been looking all over the internet trying to figure out whether it uses the probe to measure ambient CO or if the unit has a separate sensor. If the probe is being used to take the measurement you would not be able to have it inserted in the flue. The way they seem to have it is that you must do ambient CO and draft pressure separate before you take your flue gas analysis if you want them on your receipt. The analyzer will remember these readings once taken. This video is just a basic tour it doesn't cover the nitty gritty of this tool and it's workings and shouldn't be labeled how to use it lol

Been training for 3 weeks have been zeroing out side .. gonna fix that when I get out on my own.