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>In a message dated 95-11-02 16:55:18 EST, you write:
>
>>
>>Pumping Data, fill your cylinder in this sequence to these pressures.
>> Press Press Temp
>> (atm) (psi) ('C)
>>O2 74 1087.9 33.7
>>AIR 240.0 3533.3 71.5
>>
>>After cooling back to 20' C,
>>pressure should fall to 204.4atm, 3005.0psi.
>>
>>
>
>Where do the temperatures come from? Whats the assumed fill rate? I could
>get my temp monitor accessory out for my trusty fluke but I doubt thats what
>you have in mind.
>--
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>
The current model makes several "Wrong" assumptions, but we have to put in
some numbers.
20'C is the entrance temp of the gas entering the cylinder (we know this is
tooo low).
Fill rates are moderate, but we seem to be underestimating the thermal rise
in the cylinder.
If you have an ability to take internal cylinder temps, that would be of
great interest to us!!
Christopher M. Parrett, President, Abysmal Diving Inc.
Makers of ABYSS, Advanced Dive Planning Software.
6595 Odell Place, Suite G. Boulder CO, 80301
Ph, 303-530-7248, Fx, 303-530-2808
ftp://abysmal.com/users/abysmal http://www.emi.net/gulfstream/abyss/abyss.html
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