On 19 January, 2015 - Davide DB wrote: > On Fri, Jan 16, 2015 at 7:35 PM, Robert Helling <[email protected]> wrote: > > Hi, > > > > On 16 Jan 2015, at 15:44, Anton Lundin <[email protected]> wrote: > > > > As a side-note, I think the o2 consumption should default to something a > > tad higher, about 1000ml or so is probably a good default, and i don't > > know which pscr who have a 1/10 dump ratio, but the rb80 have 1/8 dump > > ratio and my guess is that it and its clones are the most common pscr on > > the market. > > RB80/RB2000 has a 1:10 ratio not 1:8 so the various clones available: > RON, Satori, NT1, Hyperion ecc... > The Tres Presidentes I own has a 1:8 ratio so dump ratio should be set via UI. >
Hmm... As i read http://www.halcyon.net/RB80 it says "8:1 ratio provides substantial gas extension" Is that old info or should i read that in some other way? > > another question: With a pSCR it could be possible to get into a low pO2 > > situation, so in planning a dive we should warn in that case as we do for > > high pO2. Which value is the minimal acceptable? Wikipedia mentions 0.16bar. > > > > Yes the O2 drop effect bring to have a MiOD (Minimum Operative Depth) > for every gas. > 0,16 is minimum PO2 to sustain life. Usually all tables reports MiOD > for 0,16 and 0,21. > 0.16 Is a good warning limit, but you should be really careful with such low po2's. Don't try to walk stairs, or climb a ladder breathing that. You can do a bit of work breathing such a low po2, if you're acclimatized to it, ex. skiing in the alps, but its quite tiresome. //Anton -- Anton Lundin +46702-161604 _______________________________________________ subsurface mailing list [email protected] http://lists.subsurface-divelog.org/cgi-bin/mailman/listinfo/subsurface
