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In message <199701121822.KAA22567@m2*.in*.co*>, George Irvine
<gmiiii@in*.co*> writes
Snip.....
>
> We had the only new rebreather technology, Stone had the only new attempt
at
>solving the sensor problem (blowing dry gas over them - he used to heat them,
>and before that he had Rosary Beads attached to them.
G
Interesting that you point this out - I'm sure most people do not
know the problems.
As regards the use of active oxygen control systems on closed circuit
rebreathers it's maybe worth remembering a conversation I had with
Drager in mid 1996.
You may or may not know that they dabbled in electronic C2 a couple of
years ago (SMS2000E) and decided not to persue the concept. They have a
100 metre semi closed self mixing gas unit (military) - the M100M. It
seemed a logical question as to why they never persued the electronic
avenue. The answer was short but interesting.......
"until such time that we can develop a suitably moisture
tolerant oxygen monitoring system we do not envisage entering the market
with rebreathers that have electronic control systems"
Food for thought........
Regards
Chris Hellas e-mail - chris@de*.de*.co*.uk*
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