Quote: (Originally Posted by
Drmike)
IMHO you should calibrate and/or flush O2 and validate before every dive with dry stabble cells. You shouldnt be getting such a big error due to wet cells - they shouldnt be getting wet.
I think there should be a 5% difference [1] between wet and dry cells. Ie cells calibrated dry underread by 5% on the bottom. And I don't mean wet as in flooded I mean breathing a loop at 100% humidity.
That said I like to calibrate in an "easy" environment rather than on a boat immediately post dive. Plus it tends to be a week or so between dives I would calibrate anyway.
But then, what's a ppO2 difference of 5% or so between friends? It makes bugger all difference to deco, for those with integrated computers, and for CNS it's not a huge issue either.
Janos
[1] - Source: The little table that comes with Analox analysers.