Measuring the co2 flow rate is an idea I hadn't considered! I only want to know when beer is being poured and not actually how much has been poured so measuri

Measuring the co2 flow rate is an idea I hadn't considered! I only want to know when beer is being poured and not actually how much has been poured so measuring co2 may be a bit simpler for cleaning and actually wiring up too (although the wiring issue is specific to my setup)