Dear Dave,
The level of CO2 is not worth a sensor - you can tell immediately that it
is high, when you felllike there is not enough gas in the workld for you to
breath.
Units that have a high O2 content intending to "average" a lower output
are nothing more than metabolic roulette , in both the hyperoxic and hypoxic
directions.
Units using electronics must be made properly. This leaves one unit - the
military MK16 of EX19, or the civiallian versios thereof - the Biomarine stuff.
If a company cannot make a single working product that is not a piece of
shit, what makes you think they should build rebreathers?
A far better question is, "what do you use a rebreather for?"?? If you
join the miltary, they will give you one, and train you properly. They will
also
give you guns and other things.
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