Rebreather World - View Single Post - How many hours from a Prism with 19 cft tanks?

Dsix36 · 10th September 2007, 01:02

Quote: (Originally Posted by warjarrett)

I just finished my first dive after training, and here is what I came up with. I dove a set point of 1.0, but manually kept PO2 between 1.0 and 1.2 (mostly 1.2). Max depth was 80 feet, and duration was 45 minutes. I was diving with OC divers, so we went up and down quite a bit (exhaling through my nose every ascent and using more dil every descent - good practice), and had to end the dive based on their air consumption. I was VERY tired after just this one dive... beginners discomfort I guess, and chose not to do a second. I did carry a 19 cuft bailout, went on it once just for practice. I used about 500 psi O2 and 1000 psi Dil, from 19s (3000 psi fills). I hope this consumption will go down as I get more dives in. At this rate of dil usage, I can only get 2 dives out of a dil tank fill -- there is no air compressor aboard the boat I dive.

I don't dive a Prisim, but my consumptions were a lot like yours when I first certified. I only have about 8 dives more than you do. Today I did 4 dives with a total bottom time of 3 hour and 55 minutes. I used 1000psi of Oxy and 900psi of Dil. I use Al20's and the dives were 60-80 ft deep. Your consumption will get better too.

10th September 2007, 01:02	#27 (permalink)
Dsix36 Going Down? Current Rebreather/s: Optima Other Rebreather/s: Join Date: Aug 2007 Location: Deerfield Beach, Florida Posts: 1,145	Re: How many hours from a Prism with 19 cft tanks? Quote: (Originally Posted by warjarrett) I just finished my first dive after training, and here is what I came up with. I dove a set point of 1.0, but manually kept PO2 between 1.0 and 1.2 (mostly 1.2). Max depth was 80 feet, and duration was 45 minutes. I was diving with OC divers, so we went up and down quite a bit (exhaling through my nose every ascent and using more dil every descent - good practice), and had to end the dive based on their air consumption. I was VERY tired after just this one dive... beginners discomfort I guess, and chose not to do a second. I did carry a 19 cuft bailout, went on it once just for practice. I used about 500 psi O2 and 1000 psi Dil, from 19s (3000 psi fills). I hope this consumption will go down as I get more dives in. At this rate of dil usage, I can only get 2 dives out of a dil tank fill -- there is no air compressor aboard the boat I dive. I don't dive a Prisim, but my consumptions were a lot like yours when I first certified. I only have about 8 dives more than you do. Today I did 4 dives with a total bottom time of 3 hour and 55 minutes. I used 1000psi of Oxy and 900psi of Dil. I use Al20's and the dives were 60-80 ft deep. Your consumption will get better too. __________________ THE MORE THAT I LEARN, THE MORE THAT I STILL NEED TO LEARN!!!!!!
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