On 25 Jan. 2018 8:07 pm, "Willem Ferguson" <[email protected]> wrote:
I am working on the user manual. Because of UI changes, this includes replacing all the images in the section dealing with the dive planner. I am trying to get the recreational planner to work and I have a problem. See attached image. If the initial cylinder pressure is not set, then the planner provides a dive at the specified depth and duration is determined by the NDL, limited by the present cylinder size and initial air pressure. So I select a 12 litre 232 bar cylinder and do not set the initial cylinder pressure. 1) The ceiling and profile do not approach the NDL limits based on dive tables, even with GF=90/90. Hi Willem, In the example you provide, the air NDL at 30m is 13min with gf 35/75. This looks about right to me. From memory the Buhlmann NDL (gf 100/100) is ~17min, and the PADI and navy tables are 2-3 minutes longer. Reducing the gf to 35/75 would reduce the NDL. 2) Even more important, at the bottom it says that the dive requires 1245 litres of gas, more than is in the cylinder. But this is wrong because the 12 litre 232 bar cylinder takes 2784 litres. That looks like a bug. I'm guessing the calculation here assumes the starting pressure was zero. If you don't enter a starting pressure, the planner should assume cylinder working pressure.
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