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RonMicjan · 9th January 2007, 04:55

Quote: (Originally Posted by Mixaddict)

I guess I should have qualified my question with stating:

1. "How deep would you be willing to dive air on OC in warm, clear, still water, moderate work load when no helium is available?"

2. "How deep would you be willing to dive with air dil on CCR in warm, clear, still water, moderate work load when no helium is available?"

Thanks for your input.

Regards,
Randy

doing the math...at 155 fsw on a ccr at 1.2 PO2, you are diving air, with the same level of narcosis, anything deeper than that at 1.2, you are getting MORE narced on the CCR than you would on air, if you bump the PO2 setpoint up to 1.3, then you are equilivant to air at 172fsw. you can also bump to 1.4 for your max depth to manage the narcosis.

pick the equilivant air depth you are comfortable with and chose setpoint and depth accordingly. anything below 100fsw END for me and I add helium to maintain that END. If no helium, I would not usually go below the 150ish range.

9th January 2007, 04:55	#7 (permalink)
RonMicjan Cap Ron scourge of the NW Current Rebreather/s: Megalodon Dolphin Home Build Other Rebreather/s: Sport Kiss Classic Kiss Dolphin Home Build Join Date: Feb 2005 Location: Cape Disapointment, The Graveyard of the Pacific Posts: 1,100	Re: Deep air on OC vs. CCR Quote: (Originally Posted by Mixaddict) I guess I should have qualified my question with stating: 1. "How deep would you be willing to dive air on OC in warm, clear, still water, moderate work load when no helium is available?" 2. "How deep would you be willing to dive with air dil on CCR in warm, clear, still water, moderate work load when no helium is available?" Thanks for your input. Regards, Randy doing the math...at 155 fsw on a ccr at 1.2 PO2, you are diving air, with the same level of narcosis, anything deeper than that at 1.2, you are getting MORE narced on the CCR than you would on air, if you bump the PO2 setpoint up to 1.3, then you are equilivant to air at 172fsw. you can also bump to 1.4 for your max depth to manage the narcosis. pick the equilivant air depth you are comfortable with and chose setpoint and depth accordingly. anything below 100fsw END for me and I add helium to maintain that END. If no helium, I would not usually go below the 150ish range. __________________ Marine rescue, towing and salvage. Interfering with natural selection since 1983. www.tmishop.com Diving bits etc. www.seatowpdx.com The Summer Job
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