Quote: (Originally Posted by
caveseeker7)

Before Closed Circuit Research's Ouroboros and Sentinel CCRs that technology was used in the Cis-Lunar MK-5p, not only for the O2 and dil inside the case, but with optional pressure transducer also the two tanks that can be mounted on the outside.
And as was pointed out last week, all that info available on the CL hasn't stopped anyone from diving it with the O2 turned off, at least two accidents?
Ignoring one alarm is just as easy as ignoring another.
I've come very close to blacking out in the shallows because I was stupid enough to be trying to put my fins on with dil in the loop, the DSV in and the O2 off (0.13 was the highest reading on the display). It scared the shite out of me, more than anything else that's happened to me on a rebreather. Would an alarm have helped? I doubt it, I would probably have thought "will you shut the f*** up, I'm only going to be a second...".
Perhaps a breathalyser in the DSV as well to check for alcohol? Or a sensor in the pee valve to check for dehydration?