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AD_ward9 · 18th April 2006, 16:53

Quote: (Originally Posted by Genesis)

Here's an interesting idea... on deco have the unit time "air breaks" for you, and alternate between a low and high setpoint (e.g. 1.3 and 0.4)

I wonder if that would keep the O2 toxicity risk under control, while still giving the advantages of relatively-high PO2 deco?

That is a good idea. We will put that in. Green blob again for that!

So, when you get to 90% CNS using the accelerated method, the system will tell you it is putting in an "Air break" and do just that, allowing the PPO2 to be breathed down to 0.4, until CNS drops to 85%, whereupon it will increase the PPO2 to your set point again.

You will need to breathe the loop down. This will take 10 to 12 minutes if you are on deco.

Any other suggestion on the limits? Should low point be 0.7?

Cheers,

Alex

18th April 2006, 16:53	#5 (permalink)
AD_ward9 So much more to learn Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Jun 2005 Location: Scotland Posts: 1,875	Re: CNS Calculation and Verification Model Quote: (Originally Posted by Genesis) Here's an interesting idea... on deco have the unit time "air breaks" for you, and alternate between a low and high setpoint (e.g. 1.3 and 0.4) I wonder if that would keep the O2 toxicity risk under control, while still giving the advantages of relatively-high PO2 deco? That is a good idea. We will put that in. Green blob again for that! So, when you get to 90% CNS using the accelerated method, the system will tell you it is putting in an "Air break" and do just that, allowing the PPO2 to be breathed down to 0.4, until CNS drops to 85%, whereupon it will increase the PPO2 to your set point again. You will need to breathe the loop down. This will take 10 to 12 minutes if you are on deco. Any other suggestion on the limits? Should low point be 0.7? Cheers, Alex
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