Rebreather World - View Single Post

***jradomski*** · 21st May 2007, 17:18

Quote: (Originally Posted by Monsta)

Hmmm, i don´t think that this is my problem

For example: I´m at 9m - finished my stop - the unit switches to 4Min @6m - i go to 6m stay there for 10 Minutes, the HH-display always showed 6m, and this stop stays there, for sure the minutes count down but veeeeeery slow. It takes approx 3-4 Minutes to get one minute counted down. For now i´m pretty sure that after some time all deco can/will be cleared.

@tecdiverfl: Thats what i did, but it only helps at the 3m stop. My problems start already on the 9m or 6m stop

So if i would quit that stop with still one or more Minutes on the clock it wont switch to the next stop (tried this already

)

Martin

Martin,
TTS prediction is based on current loop content, so when you are deeper than the actual ceiling the deco is being calculated on a leaner gas than you woul attain..

for example say the ceiling was 3m, but you were at 9m and your sp is 1.3..
at 9m you have 68% oxygen in the loop.. so your 3m TTS will also be calculated with having only 68% o2, not the "100%" you would have if you had a 1.3 at 3m.. its the same as calculating the deco with a po2 of .89

21st May 2007, 17:18	#10 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Join Date: Mar 2005 Location: "Da" Bronx Posts: 3,113	Re: Hammerhead in open water Quote: (Originally Posted by Monsta) Hmmm, i don´t think that this is my problem For example: I´m at 9m - finished my stop - the unit switches to 4Min @6m - i go to 6m stay there for 10 Minutes, the HH-display always showed 6m, and this stop stays there, for sure the minutes count down but veeeeeery slow. It takes approx 3-4 Minutes to get one minute counted down. For now i´m pretty sure that after some time all deco can/will be cleared. @tecdiverfl: Thats what i did, but it only helps at the 3m stop. My problems start already on the 9m or 6m stop So if i would quit that stop with still one or more Minutes on the clock it wont switch to the next stop (tried this already ) Martin Martin, TTS prediction is based on current loop content, so when you are deeper than the actual ceiling the deco is being calculated on a leaner gas than you woul attain.. for example say the ceiling was 3m, but you were at 9m and your sp is 1.3.. at 9m you have 68% oxygen in the loop.. so your 3m TTS will also be calculated with having only 68% o2, not the "100%" you would have if you had a 1.3 at 3m.. its the same as calculating the deco with a po2 of .89 __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
(Offline)