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I think the REALLY important thing is for divers to learn and understand the idiosyncrasies of whatever particular rig they intend to dive (each model will have its own quirks). I think that slowly - very slowly - people are starting to understand the point you have been trying to make all along that, in order to train other people on these things, one has to own his/her own unit and spend a LOT of time on it. A big part of the reason for so much dive time on these things is to become intimately familiar with the idiosyncrasies (i.e., the various, and usually minor, failure modes) and how to deal with them. This is *especially* important for the instructors, so that each individual student doesn't have to learn them on his/her own. Rich On Wed, 2 Oct 1996, Roderick Farb wrote: > Rich, the thing about O2 sensors- believe it or not, I work with my > sensors a lot in the unit and in the pressure pot- both interfaced to my > Desert Star computer that output each MV and pO2- from 0.7 to 1.4- and I > am very familiar with their behavior and idiosyncrasies. I trust them and > the knowledge I have of them implicitly so that if, for ex., I have two > that I feel are not right and one that I felt was right on, I would turn > off electronics and manually dive it for whatever time was appropriate for > the depth- shallow forever, deep until I got shallow. For non-rebreather > divers and for non-diving-scientist-rebreather experts, this is a hard > concept to swallow. A physiologist/biochemist must know and trust buffers; > a CC rebreather diver must know and trust sensors. > > On Tue, 1 Oct 1996, Richard Pyle wrote: > > > > > > > Thanks. Hey, can you post the source of that stuff you use to disinfect > > the loop? I wan't to try some. > > > > Rich > > > > P.S. The real trick is to confirm that the senosrs are telling you the > > correct peotou. I talked to a couple of the USN guys about the > > condensation on the sensor thing, and they said they've never had it > > before. It might be because of the placement of the sensors within the > > Mk-16 unit, but it might be a dive duration ting. I only see the problem > > after about 90 minutes or more, and even then only rarely. > > > > On Tue, 1 Oct 1996, rfarb wrote: > > > > > Good post, Rich. Your rationalization works for me. And, on the > > > BioMarine, I've got four ways to notice whether I got the right amount of > > > peotouze. Rod > > -- > > Send mail for the `techdiver' mailing list to `techdiver@terra.net'. > > Send subscription/archive requests to `techdiver-request@terra.net'. > > > > Richard Pyle deepreef@bi*.bi*.ha*.or* ******************************************************************* "WHATEVER happens to you when you willingly go underwater is COMPLETELY and ENTIRELY your own responsibility! If you cannot accept this responsibility, stay out of the water!" *******************************************************************
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