Quote:
| Originally Posted by videogirl I'm currently doing a Nitrox Decompression course and may look at upgrading my computer to one that does gas switching in the near future. Can anyone recommend a specific computer? |
The problem with cheep gas switching computers is they dont show TTS (time to surface on all available gas) and / or dive planning on PC.
As a result i found my Vytec a tad useless. Id be at 45m with it telling me i ha two hours of deco on the 21% I was diving. Fortunatly i had a rough idea that i only needed 45mins deco if i did 45mins on the bottom so i could ignore it and it then becomes a very expensive depth and bottom timer.
You go to 36m and switch to 36% and it drops to say an hours deco which is still a mile out
Then you go to 10m and switch to 80% and at last it gives you a good TTS time. But it dosetn like you being at 10m and asks you to go to 6 or it extends deco.
So you see basicly they are crap at doing deco dives.
I ended up running tables and just clearing the 6m stop on the Vytec.
So my 2p is if your already doing accelorated deco, invest in a proper deco computer now.
For 250-350 look out for a Nitrox or OC trimix version of the VR3 mono screen V2.1 or above.
For £500 you can get the Shearwater GF S/H. Stunning computer but its a bit of a brick.
If not then look at doing ratio deco and just use a depth and bottom timer. For Back gas an single deco gas dives to max 55m it works realy well.
As previously mentioned
Computers fail so you need some form of redundancyy and ratio deco and a simple depth and bottom timer works out the chepest way to go about it.
I had a Vytec, then two VR3's, Sherawater GF and now I have a Shearwater Persuit and use ratio deco for redundancy.
ATB
Mark