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Tek-Talk: Discuss Normoxic Trimix in the Technical and Specialist Diving Forums forums: With a minimum of 20% of O2 and max of 40% He, what's the range of diving within these limits? ...

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Old 04-03-07, 08:32 PM
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Normoxic Trimix
With a minimum of 20% of O2 and max of 40% He, what's the range of diving within these limits?

Apologies but not hot on trimix at the mo

Cheers,

Ian
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Old 04-03-07, 08:35 PM
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20/40 at 60m = 1.39ppO2, END is 32m
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Old 04-03-07, 08:40 PM
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Quote:
Originally Posted by warmwaterdiver
20/40 at 60m = 1.39ppO2, END is 32m
Cheers shipmate!
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Old 04-03-07, 09:30 PM
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Quote:
Originally Posted by warmwaterdiver
20/40 at 60m = 1.39ppO2, END is 32m

is it now
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Old 04-03-07, 09:33 PM
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Quote:
Originally Posted by gobfish1
is it now
Would appear to be, yes...

Edit: but yes, depends on whether you consider O2 narcotic or not... but 32m END accounts for the more conservative use of the assumption so a good place to start from if you're not sure.
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Old 04-03-07, 09:36 PM
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I make the END 25.4m, but then I have never calculated O2 as narcotic.

If you assume O2 is as narcotic as N2 then the END is 32m

Juz
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Old 04-03-07, 09:43 PM
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think were more than halfway there now,
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Old 04-03-07, 09:47 PM
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to calculate it 1.4(ppo2)/0.20(%o2) = 7(depth in bars ie 60m)

END = %n2/depth in bars = ppn2
0.4/7 = 2.8
end = 2.8/0.79 = 3.5 bar = 25m
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Old 04-03-07, 09:51 PM
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If you assume O2 is as narcotic it would be , what

come lads ,


up 4 it tell them
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Old 04-03-07, 10:03 PM
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