Quote:
| Originally Posted by Juz I
Ok, for the CCR example, Body is still at 1.2 PPN2, but because you are off gassing N2 INTO the loop, perhaps the loop has an increasing PPN2, so that the loop has a PPN2 of 0.7 for example |
Sorry. Just reread the question.
I would guess that on a 1.3 setpoint you're going to have a PPN2 of 0.3 no matter what you do. Irrespective of how much N2 is off-gassed, your PPO2 is fixed (by the controller), your loop volume is fixed (by the user venting as necessary) and so I don't see how the PPN2 can change.
Put it another way, if you're right, and N2 is off-gassed in significant quanitites into the loop, I would expect you to start your deco on minimum loop volume and after 50 minutes your loop volume would have increased
significantly. If it doesn't increase (which I guess it doesn't) then it's not a problem.
Laters,
Janos
PS - I'm a bit worried by the fact I can talk the talk without even owning a unit! Scary stuff. Probably means I'm talking crap too.