Dody
Contributor
Thanks for your advices.1 - that is not gas management. it is good that you are always aware of your current gas pressure but you will eventually have enough experience to know roughly how much gas you are using at a given depth. then when you look at your gauge, it will only be to confirm what you already know. you should also practice calculating your SAC rate and re-evaluating those calculations as you progress.
As for gas management, I do that too. I monitor my SAC during all my dives and study it relatively to my shape, the dive conditions,... Today, I can safely say that in normal conditions (no near panic and no fight againt strong current that I have never experienced), my SAC is between 11 and 16 l/min and it depends mostly on my fitness and my stress level (breathing control). I also mentally calculate my air consumption based on the depth. In fact, when I did my deep diving course, I computed an Excel spreadsheet calculating available air time based on depth, variable SAC and cylinder pressure. So even when I dive to 35 meters, I know how fast I consume air et double check with my gauge. I plan to buy a transmitter though. My computer is compatible.