Exhaust recycling and O2 sensor for submarine use

[Guy Hammer]

Andrew writes:
> I am also interested in any air quality monitoring ideas that you might
> have.

Um, hire a canary as First Mate? If the First Mate keels over it's time to
surface and ventilate... ;-)

(sorry, couldn't resist... :)

--
Guy Hammer, guyh at teleport.com
http://www.teleport.com/~guyh
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