Search found 3 matches

by samcantrell
Fri Sep 07, 2012 7:13 am
Forum: General
Topic: SAC rate calculations
Replies: 6
Views: 9851

Re: SAC rate calculations

I was at an average depth (per the Cobra) of 17.11 feet with a max of 23.
by samcantrell
Fri Sep 07, 2012 6:03 am
Forum: General
Topic: SAC rate calculations
Replies: 6
Views: 9851

Re: SAC rate calculations

I don't believe that the calculation is correct (or at least, I'm interpenetrating the data wrong). I'm using the formula: (psi used ÷ working pressure) X tot. cyl. cap. ____________________________________ ÷ min. = Cubic feet per min SAC (depth in feet + 33) ÷ 33 For a dive with psi used = 1450.37 ...
by samcantrell
Wed Sep 05, 2012 8:39 pm
Forum: General
Topic: SAC rate calculations
Replies: 6
Views: 9851

SAC rate calculations

How is SAC calculated?
I get SAC of 0.44 for a dive with an average depth of 16.5 feet, max 23, delta air 1160 and a dive time of 17.6 min.
MacDive shows a SAC of 0.15. (I wish it was that low!)

How is this calculated? What's going on?

Thanks