ScubaCollie

23-08-2013, 07:29 PM

I qualified last year and did my pressure groups with Dive Tables.

I now have a computer 'Sunto Vyper' and it displays current depth, max depth, dive time, water temp, and no deco time.

I think I 'may' have fell into something tonight (not literally), I thought the benefits of a computer were to tell me my depth and safety stops and for when I finish a days diving I have all the details on it to complete my log book, however this evening ive been briefly discussing pressure groups with somebody and theyve said im on a computer. .......so ive been thinking that my computer doesn't tell me my pressure group does it?

But then I back tracked and thought about pressure groups and what they mean and about max bottom times etc., and realised that the dive tables tell you the max no deco bottom time you can dive......so therefore that no deco figure that keeps counting down on my computer is working out my pressure groups for me?

Therefore if I was to make 4 x dives in a day I dont need to work out my pressure groups with my tables, pen, and paper? Is it converting each dive of the multiple dives I do into presure groups and reducing my no deco dive time in each succeeding dive?

I.e if I do 1 x dive the no deco time may be xxxx but if I do the exact same dive profile half hour later the no deco time will be less due the new pressure group and the residual nitrogen left in my body?

I now have a computer 'Sunto Vyper' and it displays current depth, max depth, dive time, water temp, and no deco time.

I think I 'may' have fell into something tonight (not literally), I thought the benefits of a computer were to tell me my depth and safety stops and for when I finish a days diving I have all the details on it to complete my log book, however this evening ive been briefly discussing pressure groups with somebody and theyve said im on a computer. .......so ive been thinking that my computer doesn't tell me my pressure group does it?

But then I back tracked and thought about pressure groups and what they mean and about max bottom times etc., and realised that the dive tables tell you the max no deco bottom time you can dive......so therefore that no deco figure that keeps counting down on my computer is working out my pressure groups for me?

Therefore if I was to make 4 x dives in a day I dont need to work out my pressure groups with my tables, pen, and paper? Is it converting each dive of the multiple dives I do into presure groups and reducing my no deco dive time in each succeeding dive?

I.e if I do 1 x dive the no deco time may be xxxx but if I do the exact same dive profile half hour later the no deco time will be less due the new pressure group and the residual nitrogen left in my body?