On 12 October 2015 at 18:21, Sergey Starosek <[email protected]>
wrote:

> Robert, Rick,
>
> On Sun, Oct 11, 2015 at 10:44 PM, Rick Walsh <[email protected]> wrote:
>
>> The cylinder pressure graph should start to flatten when starting
>> ascent.  Assuming a constant SAC, gas consumption varies with depth.  Is
>> that what you're referring to?
>>
> See another image attached (rec model, 1 min descent to 30 min, 17 min at
> 30 m, SAC set to 17/15 l/min). See the pressure graph spike (in red circle).
>
> Sergey
>

Yes, now I see what you mean.  I can reproduce it if the bottom time
exceeds the NDL in recreational mode.  I'm not sure about the cause.

Cheers,

Rick
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