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

gkndivebum · 2nd August 2007, 20:29

As many have mentioned, gas consumption is largely dependent on profile,
setpoint and one's own metabolism. Scrubber duration is also a function of
temperature and workload.

For some data points, diving here in Hawaii on a typical shallower-than-130
reef dive for 75-90 minutes I'll use anywhere from 400-600 PSI of O2 and
300-500 PSI of diluent. Water temperatures here range from 75F in the
dead of winter to 81F in late September/early October. I generally get
10 hours of duration using 6-12 Sodasorb under these conditions.

Initially my diulent use was a bit higher until I got into the "zen" of
diving the rig and proper counterlung volume management. 99% of my
diving is using 1.2 for a setpoint; rarely I'll use 1.4 or for an
extremely shallow dive 0.7.

2nd August 2007, 20:29	#16 (permalink)
gkndivebum PRISM diver Current Rebreather/s: Prism Topaz Other Rebreather/s: Join Date: Feb 2005 Location: Kona, HI Posts: 63	Re: How many hours from a Prism with 19 cft tanks? As many have mentioned, gas consumption is largely dependent on profile, setpoint and one's own metabolism. Scrubber duration is also a function of temperature and workload. For some data points, diving here in Hawaii on a typical shallower-than-130 reef dive for 75-90 minutes I'll use anywhere from 400-600 PSI of O2 and 300-500 PSI of diluent. Water temperatures here range from 75F in the dead of winter to 81F in late September/early October. I generally get 10 hours of duration using 6-12 Sodasorb under these conditions. Initially my diulent use was a bit higher until I got into the "zen" of diving the rig and proper counterlung volume management. 99% of my diving is using 1.2 for a setpoint; rarely I'll use 1.4 or for an extremely shallow dive 0.7. __________________ Best regards - gkn -- Gerard K. Newman - Kona, HI
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