Quote: (Originally Posted by
Steve)
A simple question. You are at 50m and your displays read 1.333 and 1.666. You flush with dil and the displays agree and both display 1.222. Which cell is the bad one?
My very simple newbie approach is to not use some standard extra lean diluent but rather so that the bottom dil pO2 is something close to the diving pO2. If the cells start to disagree a dil flush gives a hint which one is right. Turn the dive and go home.
Even if a dil flush shallower than bottom depth would yield a testing pO2 far under the "setpoint" another way of seeing it could be: Why abandon loop as long as the max/min readings are acceptable? That is, not way high and not so low that say your bailout is far richer.
I have not done Rebreather dives with more than around 30 min ascent time yet but if I did I would definately prefer 3 cells to reduce the guesswork when the cells start to play around.