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Re: [PSUBS-MAILIST] test of CO2 safety hardware - any volunteers?



If tested well, and found to work, this could serve as
a backup unit to a commercial device, or even just as
a novelty, but I agree in should be looked into. My 2
cents.

Dewey
--- Pierre Poulin <pipo305@hotmail.com> wrote:
> Erik,
> 
> I will try it. I just need some time. I will try it
> mainly for curiousity 
> and discution. I think that's all this group is all
> about! To get new things 
> developed and discussed.
> 
> Pierre Poulin
> 
> 
> 
> >From: Erik Muller <emuller@naic.edu>
> >Reply-To: personal_submersibles@psubs.org
> >To: personal_submersibles@psubs.org
> >Subject: Re: [PSUBS-MAILIST] test of CO2 safety
> hardware - any volunteers?
> >Date: Wed, 18 Feb 2004 12:23:52 -0400
> >
> >Gail,
> >Many of the points you made are true. Let me
> address them one at a time:
> >
> > >I'm wondering how accurate and useful a device
> like the one you describe 
> >would be.
> >Indeed, as am I. This is why I am calling for
> people with air-tight hulls 
> >to test the system. I am not suggesting that it be
> implemented on anyones 
> >machine before testing its efficiency and it is
> developed.
> >
> > >With reliable professionally-made devices being
> available, why would you 
> >want to entrust something as important as life
> support to a $0.50 
> >expedient?
> >That is true: you need to fold in the reliability
> of your equipment is to 
> >the decisions you make in piloting and using your
> craft. However, to take 
> >this question to the (unreasonable) extreme: why
> would you build your own 
> >submarine when you can buy a perfectly operational
> one, brand-new for a few 
> >hundred thousand or million? The fun is in the
> manufacture and learning how 
> >it all works. However, care needs to be taken when
> using new systems in 
> >that they are tested properly. Perhaps the 50c
> device works well enough as 
> >a first order indicator. I dont know. I think it is
> worth finding out. I DO 
> >know that it tests positive for a single breath,
> which has more that enough 
> >oxygen remaining in it to be comfortable. If
> anything, I think this will be 
> >an overly-conservative indicator. I can cite the
> age-old 'NASA vs USSR - 
> >high tech gravity-proof-pen vs  ordinary pencil'
> example as a great case 
> >where cheaper is better. This might turn out to be
> one such case.
> >
> > >From what I've learned, CO2 levels are taken care
> of by the scrubber, and 
> >it's pretty easy to verify whether or not that's
> working.  So this home 
> >made CO2 sensing device doesn't sound necessary.
> >
> >Sure, but some people dont have a scrubber in your
> machine. Others have 
> >different systems to help reduce CO2 pp. Scrubbers
> are not part of 
> >everyones hardware. I have not planned for one
> since my dives will be 
> >short.
> >
> > >Speaking for myself, I think I'd prefer the
> professional instrument. 
> >Thats fine. Then this system is not for you. Some
> people dont have the 
> >money, or want to try to make it all from the
> ground up (i.e. some people 
> >like to grow their own for the fun of it). Im not
> insisting that this 
> >system be immediatly implemented by all. Just that
> it is a system that 
> >MIGHT be useful to SOME people, and is worth
> testing. Nothing more. If 
> >tests show  that it is unusable, then we have
> learned something. If tests 
> >show that it IS useable, then we have also learned
> something. Its a win-win 
> >world in this case.
> >
> >There is a commercial in australia which says: 'you
> will never know if you 
> >never go'. If its not tested, we will never know if
> it is useable, or not. 
> >People have been objecting to my suggested
> technique for about a week, yet 
> >no-one has tested it. I would really prefer that
> people object with numbers 
> >or solid data, rather than opinions. The proof is
> in the pudding. We grow 
> >by testing and learning. <insert other assorted
> feel-good anthropic cliches 
> >here>.
> >
> >Anyhow. thats enough from me.
> >EM.
> >
> >
> 
>
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