Wednesday, June 19, 2019
  • Welcome to the DeeperBlue.com Forums, the largest online community dedicated to Freediving, Scuba Diving and Spearfishing. To gain full access to the DeeperBlue.com Forums you must register for a free account. As a registered member you will be able to:

    • Join over 40,000+ fellow diving enthusiasts from around the world on this forum
    • Participate in and browse from over 496,000+ posts.
    • Communicate privately with other divers from around the world.
    • Post your own photos or view from 7,300+ user submitted images.
    • All this and much more...

    You can gain access to all this absolutely free when you register for an account, so sign up today!

rebreather deco

mupwi

New Member
Nov 21, 2005
57
3
0
35
hi I am prety well read in terms of rebreathers and how they work technicaly.
My one question is when it comes to deco how do you calculate your no deco times or sit times when you have a constantly changing gas mix. Surly not with tables so do you just dive conservativly or are there special dive computers for this which can check your mix constantly
 

Jon

Dairyland diver
Supporter
Apr 7, 2001
4,080
470
188
52
Madison, Wisconsin
There are special tables that you use called constant PP02 tables. You can set your rebreather at a certain set point and run them off the tables if it's a full CCR. For a short dive you might set it at a 1.4 and for a longer dive you would set it lower- say a 1.0. Most people use the tables as back-up's and run a computer, or two, to manage their deco. There are also bail-out open-circuit tables in case the rebreather fails on the dive.

You should check out the Rebreather World website for more information.

Jon