Sorry, but I do not agree, the example below highlights it,
I have a habit on engaged Trimix dives to check the setting of my OSTC by a simulation on V-Planner,
So, here is your example:
Depth 120 m - Time 11 min - GF 10/85
- 1st gas programming on OSTC 3 v2.97: according to your example with the 50/15 First at descent:
First: 50/15 - Transit: 10/70 - Deco1: 25/45 - Deco2: 50/15 - Deco3: Nx80
The OSTC gives us a DTR of 46 minutes! whom I will describe as fanciful, unless a mistake on my part ...
Notes: "Transit Gas" for me in Tek literature I don't know what it is! I know Travel Gas, Bottom Gas and Deco gas,
- 2nd programming of the gases on OSTC 3 v2.97: according to my programming without the first gas 50/15 in Travel, considering the results of DTR above,
First: 10/70 - Deco1: 25/45 - Deco2: 50/15 - Deco3: Nx80
The OSTC gives us a 139 minute DTR! which I will call coherent ...
Notes: It is clear that when you program on OSTC a Travel Gas First (here: 50/15) the calculation is wrong, in the current programming First Gas must be the Bottom Gas, reason of my request in the message previous,
Or you have to use the 50/15 in Travel gas and change it manually on the OSTC which is tedious downhill and creates a waste of time,
the ideal would be to give the choice to the diver Tek to program a Travel gas and the calculation isn't wrong, also reason of my request in the previous message,
The Travel Gas has an adjustable depth of change on the descent while the Deco Gas has a depth of change at the ascent, which justifies having two separate terms for the descent gas and the ascent gases,
The ideal also would be to be able to adjust each gas in one of the designations: Travel, Bottom, Deco, Disabled. Simple as that
- Check with V-Planner: with a conservatism of 3
Travel: 50/15 - Bottom: 10/70 - Deco1: 25/45 - Deco2: 50/15 - Deco3: Nx80
V-planner gives us a DTR of 124 mn! which I will describe as coherent with regard to my 2nd OSTC program which gives a DTR of 139 mn
As I use your example, of course I didn't work the choice of gases that could be improved ...
Hoping that this can be useful,
ClaudeDive ><)))))°> OSTC3 #2430 <°(((((><
Edited 3 time(s). Last edit at 02/13/2018 02:31AM by ClaudeDive.