hey Tyler, I've only done a few deepish dives in a range that i'd expect air dill not to drop my po2 adequately. Certainly going deeper than 200 will require hypoxic dill and trimix. Getting all the added certifcation may turn out to be of limited value to me though since the places i'd like to do long deep dives are on reefs that are so remote that getting anything other than compressed o2 and air is problematic... but that's really a subject for another post.
What attracts me to the needle valve on the Pelatian is that it sounds like a great way to tweek the o2 flow to match changing needs. Rapid descents were just one area I would find this convenient. I have my IP set to deliver just under my metabolic rate so that I hardly have to inject at all while at a constant depth, the downside to that is that it rises above 1.3 when i'm descending quickly even with adding dilluent. While that only happens for a short time, and i'm told many folks with eCCR's experience this as well, it would still be nice to have more control of... and then there is the advantage of removing the whole depth limit thing altogether.
Mod 2 and 3 are likely an inevitability and I guess i'm mostly looking down the road, for to the configuration in mCCR I will likely want so that I can make most of the big changes now and grow accustom to them before adding all the other additional complexity of multiple gas mixes and so on.
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Quote: (Originally Posted by
Tyler S.)
Gill I dont understand your po2 issues on deep dives. I dont have any problem on descent, what dil are you using? The dil should be doing its job by diluting the o2 thats being bled in, you should never have to turn your o2 off, unless you are at 200' on air dil
. I dont know about the Pelagian scrubber as I didnt see it torn apart. The needle valve kicks arse