This modell must be great with the Hogartian configuration.
If your bio-computer fails, just listen to your buddys computer. Can you
program your favorite tunes ??

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Atle Aamodt
Scandinavian Techdiver Website and Mailing-list
http://tekniskdykking.org
----------------------------------------------------------------------------
------------------------------
Homebulit rebreather
http://home.sol.no/~aaamodt/homebrew/index.htm
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----------
> From: David Strike <strikinc@oz*.co*.au*>
> To: techdiver@aquanaut.com; rebreather@nw*.co*
> Cc: aaamodt@on*.no*
> Subject: Re: Biological O2 sensor for Rebreathers
> Date: 15. januar 1998 22:44
> 
> 
> Atle,
> 
> You're skating on thin design patent ice with this one!  
> 
> You wrote:-
> >No batteries, no complicated electronics. Can be flooded for shorter
> >periodes.
> >It's cheap, it's small, it's user fiendly, it's accessible. It comes in
> >different colours. 
> >Just mount it in your mask and if it stops working; abort the dive.
> >
> >The answer is a Canary3000 BioX. This computer can be ordered from my
> >company LoboTech inc.
> > 
> >The problem might be dependability, guess you need to buy three of them
and
> >a larger mask
> >
> >Call now and get a coupon for birdseeds
> 
> The Polly-Gaff Gas Analyser made its debut in '96  (A snip from the
> inaugural release follows) with patents pending world wide.  Let's avoid
a
> nasty legal wrangle.  Just send huge sums of money to my Channel Islands
> bank a/c. :-)
> 
> Strike
> 
> ------------------------------------------------------------------
> 
> 
> The Polly-Gaff Gas Analyser
> The inherent problem with gas analysers is their frailty.  While primary
> diving equipment is designed to withstand the rigours of harsh
environments
> the support instrumentation is often less hardy.  
> 
> (A chunk snipped)
> 
> Invited to seek an inexpensive solution to the problem, Zymurgy Inc. -
the
> international consortium of diving technologists credited with designing,
> among other things, the Nitrox Snorkel and the 'Mollusc Fu-2' dive
computer
> - brought their vast expertise to bear.
> 
> Drawing on the lessons learned by other industry groups faced with the
> problem of maintaining life in potentially hostile atmospheres they came
to
> the conclusion that a biological monitoring device was the answer.
> 
> Faced with the ever present risk of drilling into pockets of poisonous
gas,
> coal miners of the last century were in the habit of carrying with them a
> canary in a cage.  With its high metabolic rate the canary would quickly
> succumb to the effects of changes to the atmosphere and provide the
miners
> with advance warning of impending danger.
> 
> Employing state-of-the-art plastics technology, Zymurgy Inc.'s design
team
> have created a small pressure-resistant bell jar with screw-in base
plate,
> 'O'-ring seals and a centrally located, non-return inlet valve to which
is
> attached a small hose that plumbs directly into the counter-lung of all
> currently available CC Rebreather models.  With an adjustable exhaust
valve
> located on the crown, the jar also contains a small wooden swing, and two
> small containers, one holding bird seed and the other filled with water.
> 
> Considerable research went into selecting the appropriate type of bird,
the
> team ultimately deciding on a miniature Australian parrot renowned for
its
> non-stop squawking.  
> 
> Once the parrot is introduced into the jar and the base securely sealed
the
> whole assembly is clipped to a gimbal mounting on the diver's left
shoulder
> in close proximity to his ear.  
> 
> Exhaustive tests on the 'Polly-Gaff' gas analyser showed that while the
> parrot was exposed to the same breathing mixture as the diver he
continued
> to chatter and squawk, a sound easily carried to the divers ear by virtue
of
> water's greater density.
> 
> When, however, the PO2 falls below 0.5 or rises above 1.4 Bars then the
> parrot will usually fall from its perch and cease to make any noise at
all,
> an immediate indication that drastic changes have occurred to the oxygen
> content of the breathing mixture.
> 
> Although a few wrinkles still remain to be ironed out it is thought that
the
> 'Polly-Gaff'  will, through its novel use of biological controls, add a
new
> dimension to deep diving research.
> 
> ---ENDS---
> 
> For further information contact Zymurgy Inc.  Fax. +61 (2) 9981-2950
> 
--
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