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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