set nitrox mode with stinger suunto ?

[Mario]

Hello,

When setting the suunto stinger in Nitrox mode, is it needed to enter
just the percentage of O2 or also the value of PO2 ( partial pressure
O2) ? if so, why is it needed to enter also the partial pressure of O2
? isnt it related to the depth? if so couldnt it be calculated
according to the depth ?

Do also other dive computers require entering the partial pressure of
O2 ? also the aladin does ?

What about the dive alarm max depth, do you also set the max depth
alarm to the max depth of the entered % of Oxygen ?

Please feel free to give me your comments and recommendations in the
use of the stinger for Nitrox diving.

Thanks,

Mario

[Jammer Six]

In article <***@posting.google.com>, Mario
<***@hotmail.com> wrote:

€ Please feel free to give me your comments and recommendations in the
€ use of the stinger for Nitrox diving.

1. Learn to dive with a bottom timer.
2. Sell stinger on eBay.
3. Buy bottom timer.
4. Go diving.

You don't read manuals, do you?

[Michael Wolf]

Post by Mario
Hello,
When setting the suunto stinger in Nitrox mode, is it needed to enter
just the percentage of O2 or also the value of PO2 ( partial pressure
O2) ? if so, why is it needed to enter also the partial pressure of O2
? isnt it related to the depth? if so couldnt it be calculated
according to the depth ?
Do also other dive computers require entering the partial pressure of
O2 ? also the aladin does ?
What about the dive alarm max depth, do you also set the max depth
alarm to the max depth of the entered % of Oxygen ?
Please feel free to give me your comments and recommendations in the
use of the stinger for Nitrox diving.
Thanks,
Mario

The PO2 you're entering is the max. PO2 (as this depends on the agency
you're getting you cert. from). By setting this, you also set the max.
depth.

BTW there's some good computers out on the market which do the job just
as fine as the Stinger, but cost a bit less.

[chilly]

"Michael Wolf" <***@advalvasstopspam.be> wrote in message news:410f3f97$0$31488$***@news.skynet.be...
(snip)>

Post by Michael Wolf
BTW there's some good computers out on the market which do the job just
as fine as the Stinger, but cost a bit less.

Sure there are, but they don't have that sexy cachet.

[Michael Wolf]

Post by chilly
(snip)>

Post by Michael Wolf
BTW there's some good computers out on the market which do the job just
as fine as the Stinger, but cost a bit less.

Sure there are, but they don't have that sexy cachet.

There are ways to compensate for that...

[chilly]

Post by Michael Wolf

Post by chilly
(snip)>

Post by Michael Wolf
BTW there's some good computers out on the market which do the job just
as fine as the Stinger, but cost a bit less.

Sure there are, but they don't have that sexy cachet.

There are ways to compensate for that...

My point exactly. Some guys that need to compensate buy hot cars, others
may buy a fancy dive computer that doubles as a watch.

[Michael Wolf]

Post by chilly

Post by Michael Wolf

Post by chilly
(snip)>

Post by Michael Wolf
BTW there's some good computers out on the market which do the job just
as fine as the Stinger, but cost a bit less.

Sure there are, but they don't have that sexy cachet.

There are ways to compensate for that...

My point exactly. Some guys that need to compensate buy hot cars, others
may buy a fancy dive computer that doubles as a watch.

...and some simply don't need to compensate... ahum...

[chilly]

Post by Michael Wolf

Post by chilly
My point exactly. Some guys that need to compensate buy hot cars, others
may buy a fancy dive computer that doubles as a watch.

...and some simply don't need to compensate... ahum...

buffing your fingernails on your chest, are ya?

[Michael Wolf]

Post by chilly

Post by Michael Wolf

Post by chilly
My point exactly. Some guys that need to compensate buy hot cars,

others

Post by Michael Wolf

Post by chilly
may buy a fancy dive computer that doubles as a watch.

...and some simply don't need to compensate... ahum...

buffing your fingernails on your chest, are ya?

who? me???

[Mario]

interesting none of your answers clearly answer my question, I hope
there is some one that can seriously explain me the use of setting the
PO2 from 1.2 upto 1.6

thanks

Post by Michael Wolf

Post by chilly

Post by Michael Wolf

Post by chilly
(snip)>

Post by Michael Wolf
BTW there's some good computers out on the market which do the job just
as fine as the Stinger, but cost a bit less.

Sure there are, but they don't have that sexy cachet.

There are ways to compensate for that...

My point exactly. Some guys that need to compensate buy hot cars, others
may buy a fancy dive computer that doubles as a watch.

...and some simply don't need to compensate... ahum...
--
Michael Wolf
-----
Cthulhu For President.
Why settle for the lesser evil?
remove stopspam to reply

[Michael Wolf]

Post by Mario
interesting none of your answers clearly answer my question, I hope
there is some one that can seriously explain me the use of setting the
PO2 from 1.2 upto 1.6
thanks

As I said in my other mail: it's the max. PpO2. So, if you're PADI you
would set it on 1.4 and if you're IANTD you would set it on 1.6.

Lemme guess: you're not nitrox certified, are you?

Sigh...

[Pete Melbourne]

Post by Mario
interesting none of your answers clearly answer my question, I hope
there is some one that can seriously explain me the use of setting the
PO2 from 1.2 upto 1.6

Michael Wolf's first post answered it
--
Pete

news 'at' melbourne 'dot' me 'dot' uk

[Ron MacRae]

Post by Mario
interesting none of your answers clearly answer my question, I hope
there is some one that can seriously explain me the use of setting the
PO2 from 1.2 upto 1.6
thanks

Mario,
If you don't already know the answer then you haven't done a Nitrox
course, or you missed the single most important point.
To give you this piece of information, without the rest of the course to
make you aware of the caveats and why you would use different values, is
dangerous.
If you didn't understand Michael Wolf's explanation then I'm doubly worried
and less inclined to explain in detail.
If you want to know then do a nitrox course, otherwise forget it and leave
the computer in 'air' mode.

Sorry,
Ron MacRae

[mike gray]

Post by Ron MacRae
If you want to know then do a nitrox course, otherwise forget it and leave
the computer in 'air' mode.

Someone really needs to come up with a computer that automatically
defaults to Xenon mode.

This would be very attractive to those that like a big "safety margin"
and it would keep many others out of a lot of trouble.

[mike gray]

Post by Mario
interesting none of your answers clearly answer my question, I hope
there is some one that can seriously explain me the use of setting the
PO2 from 1.2 upto 1.6

Current thinking (Lambertson, NEDU) is that there is cumulative damage
from repeated exposure to hyperbaric O2.

If you plan to do, lifetime, more than a few thousand dives, you may
want to observe a 1.2 limit to reduce the cumulative damage.

If you plan to do, lifetime, less than a few thousand dives, you need
only be concerned with the single exposure limits of 1.6 or 2.0 or
whatever yer church preaches as a single exposure limit.

PADI and others recently reduced single exposure limits from a totally
arbitrary 1.6 to a totally arbitrary 1.4 in a totally knee-jerk reaction
to Lambertson's latest work. It is a totally meaningless gesture, but it
sounds totally cool, and that's what's really totally important in
recreational scuba.

[Mario]

I see, now it starts to be more clear.

But I am maybe confussed, doesnt the PO2 depends on the depth ? if it
depends just on the depth why doesnt the computer set it automatically
according to the depth ? or maybe PO2 depends also on other factors?
this is what I would like to understand better.

Thanks,

Mario

Post by mike gray

Post by Mario
interesting none of your answers clearly answer my question, I hope
there is some one that can seriously explain me the use of setting the
PO2 from 1.2 upto 1.6

Current thinking (Lambertson, NEDU) is that there is cumulative damage
from repeated exposure to hyperbaric O2.
If you plan to do, lifetime, more than a few thousand dives, you may
want to observe a 1.2 limit to reduce the cumulative damage.
If you plan to do, lifetime, less than a few thousand dives, you need
only be concerned with the single exposure limits of 1.6 or 2.0 or
whatever yer church preaches as a single exposure limit.
PADI and others recently reduced single exposure limits from a totally
arbitrary 1.6 to a totally arbitrary 1.4 in a totally knee-jerk reaction
to Lambertson's latest work. It is a totally meaningless gesture, but it
sounds totally cool, and that's what's really totally important in
recreational scuba.

[mike gray]

Post by Mario
I see, now it starts to be more clear.
But I am maybe confussed, doesnt the PO2 depends on the depth ? if it
depends just on the depth why doesnt the computer set it automatically
according to the depth ? or maybe PO2 depends also on other factors?
this is what I would like to understand better.

You do need to take a nitrox course.

The PO2 is the fraction of O2 in the mix times the depth in ATA.

At the surface (1 ata) breathing normal air (FO2 0.21) the PPO2 is 1.0 x
0.21 = 0.21 If you are breathing a 40% mix at the surface it is 1.0 x
0.40 = 0.40

At 33 fsw (2 ata) on normal air it is 2.0 x 0.21 = 0.42

At 33 fsw on 40% nitrox it is 2.0 x 0.40 = 0.80

[chandler]

Post by Mario
interesting none of your answers clearly answer my question, I hope
there is some one that can seriously explain me the use of setting the
PO2 from 1.2 upto 1.6

On all these newsgroups you are posting to no one could answer your
question?

[Jammer Six]

In article <***@posting.google.com>, Mario
<***@hotmail.com> wrote:

€ interesting none of your answers clearly answer my question, I hope
€ there is some one that can seriously explain me the use of setting the
€ PO2 from 1.2 upto 1.6

That's nice.

Let us know how all that hoping works out for you.

[yawn]

[Dillon Pyron]

Post by Jammer Six
€ interesting none of your answers clearly answer my question, I hope
€ there is some one that can seriously explain me the use of setting the
€ PO2 from 1.2 upto 1.6
That's nice.
Let us know how all that hoping works out for you.
[yawn]

Me thinks this is another one of those who decided they could sleep
through basic Nitrox theory. It's not that hard, but you do need to
be awake.

[Alun Harford]

Post by Mario
interesting none of your answers clearly answer my question, I hope
there is some one that can seriously explain me the use of setting the
PO2 from 1.2 upto 1.6

Hardly supprising.
It's OT in rec.scuba (it's not about US politics or guns), and most
people in other groups killfile anything posted to rec.scuba

Alun Harford

[Joe English]

Post by Alun Harford

Post by Mario
interesting none of your answers clearly answer my question, I hope
there is some one that can seriously explain me the use of setting the
PO2 from 1.2 upto 1.6

Hardly supprising.
It's OT in rec.scuba (it's not about US politics or guns), and most
people in other groups killfile anything posted to rec.scuba
Alun Harford

I'd answer him but I don't have a stinger