Quote: (Originally Posted by dave t)
The idea of three cells in a ECCR is voting logic, I dont see any difference in a manual CCR just the computer between your ears does the voting logic!
I agree!
With 3 cells, you do voting logic with your head. And you have redundancy. If one fails, you still have 2 and could continue the dive with confidence (if you had/wish to).
With 2 cells, you could do diluent flush to figure which one is good, but would you continue the dive or stay on the loop with 1 cell ? If yes, then how would you then know the single remaining cell will still be good in the next 5 minutes since you now have no frame-of-reference ? Or will you continuously do diluent flushes to check ?
Just IMHO...