oxygen window

[liamm]

with the recent threads about deco mixes ive been reading around and got myself a bit confussed about the oxygen window concept. Can anyone point me in the direction of a a decent paper/article that covers it?

Apologies to Garf and Mark who explained this to me just over a month ago, and i did understand it at the time but .......

the reasoning behind the question is that i'm about to commit to purchase a deco cylinder as opposed to just borrowing one and if i go for a 50% set up my regs are 0k but if i go for 80 / 100% i need to get a new setup for my deco cylinder or find someone who is prepared to o2 clean my mk2. (i appreciate that its supposed to be simple to do but i dont really trust myself yet) Before i committ to the richer setup i want to be sure that it fits my needs.

...... that and i'm trying to look busy at work.

[liamm]

I should probably expand a bit. My reasoning for going towards a richer setup is that for the next while most of my deco will be fairly short and not too deep - 35m - and i think that 80 / 100 will be more efficient at this range. Also next summer most of my diving will be ina fairly remote part of donegall (north west coast of Ireland) and it would be useful if i had my own o2 incase it all goes wrong.

[nigelH]

Be careful, there are about three different definitions of 'oxygen window' addressing different aspects of decompression knocking about, so it is a term best avoided or you just end up talking at cross purposes. Everybody seems to think theirs is 'right'. The best is a highly technical exposition of blood chemistry that goes right over the head of a mere jobbing physicist like me, the normal one is just the difference between ppInert and absolute pressure. I forget the third.

[Garf]

Originally Posted by liamm

with the recent threads about deco mixes ive been reading around and got myself a bit confussed about the oxygen window concept. Can anyone point me in the direction of a a decent paper/article that covers it?

Apologies to Garf and Mark who explained this to me just over a month ago, and i did understand it at the time but .......

the reasoning behind the question is that i'm about to commit to purchase a deco cylinder as opposed to just borrowing one and if i go for a 50% set up my regs are 0k but if i go for 80 / 100% i need to get a new setup for my deco cylinder or find someone who is prepared to o2 clean my mk2. (i appreciate that its supposed to be simple to do but i dont really trust myself yet) Before i committ to the richer setup i want to be sure that it fits my needs.

...... that and i'm trying to look busy at work.

Not sure why you need to know about the O2 window for this to be honest Liam, perhaps you are getting a little mixed up.

Go read this, it may help...http://www.yorkshire-divers.com/foru...e&articleid=14

[liamm]

You're right- i dont really need to look at it - but i've developed an embarrasingly geeky interest in deco theory. I think its a case of a little bit of knowledge has got me confussed so id like to be able to get my head around it.

[Garf]

you have a pm then!