I would like to see this thread open up It IMHO was very informative with a lot of unanswered questions on cell testing and pre dive protocol.
I dive a PRISM and the Unit will not calibrate unless you have 3 working senors and 98.3% or higher O2
One of my pre dive protocols (within 24hrs) is a mv check
If an O2 sensor is producing the proper mv out put can it still fail and not read over 1.6????
I personally believe sometimes less gadgets are better, and there are no shortcuts to ccr diving. If you do a mv check and a elevated PPO2 decent to 9m or a pressure pot test Murphy can still KILL you.
SHAME on any ccr diver who dosnt own a volt meter
(it was required for my PRISM Training).