| Re: Is Rebreather diving inherently more dangerous than OC?
Depends.
CNS hits are of course really bad but DCS hits can be too.
Why not dive with the "understated" PO2 and fly at a "claimed" 1.0 - 1.2? You're under 1.4 this way and yet your deco is computed for a 1.0 to 1.2, which gives you both the CNS safety AND the DCS margin......
If going "to the wall" is important, then you need exact numbers. But is that really a good idea to start with?
Between sensor and measurement uncertainty you likely have a 3-5% error anyway. O2 sensors are only guaranteed to 1% within a 1.0 PO2 and 2% at 2.0 PO2 in most cases anyway, and the additive error of any amplification and ADC stages in the middle likely pushes this into the 3-5% range in total.
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