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Carl G Heinzl writes:
> 
> Well, there are tables and computers for diving on air and there are
> different tables and computers for diving on nitrox but is there a way to 
> hop from one to the other???  

Nope.  This is yet another logistical consideration to consider.  A
fair number of folks use air tables/computers even when "enriched" :),
to get around just this point.

> It would certainly be nice to tell a computer - let's start diving but feed 
> it profiles (part of which is a profile of the different gases) from dives 
> previously done (without that particular computer).  This would be
> useful in the event that one computer dies and you weren't carrying
> your second one.

How would you get the profiles out of your downed computer, given the
very likely situation that you have not dumped your entire history
between EVERY dive of your trip, or that your computer dumps underwater?

> This bring up another goody that I'd like to see designed and built.  I
> would like a computer with a built in gas analyzer (it probably only has

There was just such a computer on the market for a brief time before
the company went under.  It had an optional O2 sensor which plugged
into your first stage, and which was used to determine the bi-mix
ratio.  You're still hosed as far as using ponies goes, but hey, just
another logistical consideration, right?  :(

I'm starting to talk myself out of technical diving.  Maybe I'd better
stop talking now.... :(

Cheers,

David Story                        NAUI AI Z9588, PADI DM 43922, EMT
story@be*.wp*.sg*.co*		    Better diving through lithium.

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