Average Gas Consumption

[scubadada]

More than 56,000 views and 743 votes in the poll

The median, mode, and weighted average remain 0.5-0.59 cu ft/min or 14.2-16.9 l/min

If you have not voted in the poll, please consider doing so. If your average RMV has changed, please change your vote.

Dive, dive, dive

 

[scubadada]

Now, more than 57,000 views and 10 more votes in the poll

The median, mode, and weighted average remain 0.5-0.59 cu ft/min or 14.2-16.9 l/min

If you have not voted in the poll, please consider doing so. If your average RMV has changed, please change your vote.

Best diving to all

 

[WillieJustice]

I'm probably screwing up the calculation, but I'm also pretty sure I use a cuft or more per minute. Latest dives were about 50 minutes and used 2500 psi in an 80 cuft tank.

 

[scubadada]

I'm probably screwing up the calculation, but I'm also pretty sure I use a cuft or more per minute. Latest dives were about 50 minutes and used 2500 psi in an 80 cuft tank.

Give us your average depth and we can check your calculation.

For an average depth of 50 ft, that would be an RMV of 0.51 cu ft/min/atm with an AL80

 

[Phteven]

This thread has made me very interested in keeping better logs of start/stop PSI and figuring out my consumption. I feel like mine is probably pretty high but in a couple of weeks I'm doing a liveaboard trip in australia and will take copious notes to see what I can find out.

On dives in french polynesia last year it looks like I was getting about 45 minutes on average on an AL80, but for one of those the guide had me use his octo for a few minutes instead of ending the dive early (gave me a little extra bottom time and then switched back to my own air for ascent, still surfaced with a safe amount… ).

 

[scubadada]

This thread has made me very interested in keeping better logs of start/stop PSI and figuring out my consumption. I feel like mine is probably pretty high but in a couple of weeks I'm doing a liveaboard trip in australia and will take copious notes to see what I can find out.

On dives in french polynesia last year it looks like I was getting about 45 minutes on average on an AL80, but for one of those the guide had me use his octo for a few minutes instead of ending the dive early (gave me a little extra bottom time and then switched back to my own air for ascent, still surfaced with a safe amount… ).

Just record your psi used, average depth, and dive time and you can calculate your RMV. Early in your dive career you stand a very good chance of improving your gas consumption with improved buoyancy, trim, propulsion, relaxation... Participate in the poll when you have an average number. You can always change your vote as you improve.