Quote: (Originally Posted by
gallathan)
Ok, just trying to get a feel for this. I normally dive at 1.3 setpoint, but want to up my setpoint to 1.4 on deco. I know how to do this, but trying to get a rule of thumb/ feel for when to do this. I know if done to early, because I'm breathing out lots of inerts, it will be difficult to do this. I know the loop will 'stabilise' but I want to balance shorter deco vs loop stability.
It's trivial. The time savings is not that big a deal.
For example a 70m dive on 10/50 for 45 min at 1.3 atm yields a total runtime of 153 min with a cns of 77% whereas upping the setpoint to 1.4 atm on ascent brings the runtime to 146 min but runs the CNS% up to 84%. the 7min savings is not a big deal.
Now if you were running 1.2 atm set point and then ran your PO2 up to 1.4 you may save about 10% of your total time.
The small difference between 1.3 and 1.4 really is that... small.
Cheers