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Let's put the O2 sensor nonsense in perspective.
The real reason to use them is to determine if what you
see is what you get. If your bottle has leaked O2 on
the way to the store, you wil be light and maybe bent.
If you overfilled, it will be way off. If you forgot,
as in trimix, you would be maybe hypoxic on the surface.
Maybe you put the 50/50 in the 35% bottle. In eny event,
these things are a check, and for the dives you and I
are doing, minor differeces are not critical, since
we do not press the limits (do we) and we know that
these deco models are so grossly padded that it
probably makes little difference what we are breathing.
Maybe all of you are hitting it a lot harder than me,
but this is what I use them for.
Several years ago, before I had a good working
knowledge of this, I was scared of getting bent or
getting killed by some bad mix. I would mix my gas,
and take it to have it analyzed by a mass spectrometer.
I would get out of the water cringing and waiting to
get bent.
Two weeks ago, someone stole my oxygen bottle
out of Wakulla ( I left in in overnight from the
previous dive). Not having O2, I just skipped the
twenty and ten foot stops, got out and went home.
I was in a hurry, and did not want to wait for the
surface crew to get another one out of my van. Guess
what? No problem. - George
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