[PATCH] Fix up SAC calculations for ATM/bar confusion

Jukka jukka.lind at kolumbus.fi
Tue Feb 26 12:59:31 PST 2013

On 26.02.2013 17:44, Dirk Hohndel wrote:
> On Feb 26, 2013, at 7:26 AM, Jukka wrote:
>> Today it's well enough. But I've been torturing my spreadsheet to calculate "real" air volumes based on Van der Waals and any oxygen-nitrogen-helium-mix and any (constant) gas tempareture. The math is terrible and it'll take a few days (=nights).
> So do you think what we have now is "good enough" or do you want to push this even further?

Situation now is good enough for me and most divers. I think the 
accuracy without any doubt is good enough to plan safe dives and justify 
past dives. I don't do trimix, and in nitrox I trust others' blending.
Extra accuracy would not harm if it comes without cost. I know people 
who'd like to plan nitrox and trimix and do it as accurately as 
possible. I've studied Nigel Hewitt's pages (thanks Chris!) and I know 
accurate nitrox/trimix calculating could be made part of subsurface, if 
we want it. I'm don't mind if they are not taken to the master tree.
If no one doesn't do it faster, I'll anyway give the functions to 
calculate gas mixes(, but don't hold your breath). They could also be 
used for blending software.

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