SAC and Gas Consumed Calculation

Tomaz Canabrava tcanabrava at kde.org
Tue Feb 11 14:30:29 UTC 2014


My subsurface-programming-computer is at work compiling 16gbs of software,
but it`s easy to do.
look for DiveItem on models.cpp and on `data` function add a:

if (role == ToolTipRole ){
    return tr(" text here ");
}
On Tue, Feb 11, 2014 at 8:00 PM, Dirk Hohndel <dirk at hohndel.org> wrote:

> On Tue, 2014-02-11 at 12:46 -0800, Linus Torvalds wrote:
> > On Tue, Feb 11, 2014 at 12:18 PM, Rick Walsh <rickmwalsh at gmail.com>
> wrote:
> > >
> > > Also helps explain why I've found consumption, measured the
> > > easy/wrong/padi/my way appears better when using aluminium tanks
> filled to
> > > 200-210 bar (aka ~3000psi) as opposed to steel tanks at 230-240 bar. I
> > > thought it was all down to being more relaxed and breathing slower in
> easy
> > > diving conditions in warm tropical waters, where AL80s are the norm.
> >
> > I'm sure it's a combination of the two. In fact, I'd expect the effect
> > of "easy diving in warm tropical waters" to be much more.
> >
> > I certainly notice that my SAC rate in nice diving in warm waters
> > tends to hover around 12l, while the technical diving during my trimix
> > course was almost double. Oops.
>
> First time we had twins on our backs we pointed out to the instructor
> that at twice the SAC rate the twins don't really offer a lot more TIME
> under water :-)
>
> By now my SAC rate with twins in cold water is only about 10-15% higher
> than in with an AL80 in warm water...
>
> > > Can a statement that gas incompressibility at high pressure is
> considered
> > > when calculating gas consumption be added to the manual so other
> > > ill-informed divers, like me, don't get confused?
> >
> > It might be a good idea. It would be possibly even better to have some
> > kind of "help when hovering over values" thing.
>
> Great idea.
>
> Willem, can you add this to the manual?
>
> Tomaz, could we do this in the dive list?
>
> /D
>
>
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