Quote: (Originally Posted by
graham_hk)
I fail to see how this is unique to mCCR - personally I wouldn't want electronics managing PO2 when I couldn't monitor it. Semi closed would be what I would choose to do.
Graham
I don't completely agree. Based on the sound of the solenoid and the volume changes in the loop (no changes if you stay at the same depth), you should be able to determine whether your controller is working or not. On the Inspo/Evo the buzzer will alert you for life critical situations. If you don't hear the solenoid for a while, then it's time to bailout because the solenoid firing is the only way to find out whether the controller is working or not without a visual reference.