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What are the benefits of diving nitrox?


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37 replies to this topic

#31 TexasDiver

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Posted 03 January 2012 - 08:48 PM

You need a nitrox computer, should be able to find for $250---> $1500.00 ...

If you dont' have unlimited funds then when shopping Nx dive computers don't forget to check out consoles / combos that come with a Nx computer. I recently got the computer, hose, console, and gauge all for less than the price of the computer alone and got the shop to throw in a wrist strap, too. Removed the computer from the console and installed it on the strap, saved at least 25% and got spare parts to boot!

Take the e-Learning course online before you do anything. It isn't expensive and you'll learn in short order.

Edited by TexasDiver, 03 January 2012 - 08:50 PM.


#32 WreckWench

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Posted 04 January 2012 - 09:11 AM

NOTE ON E-LEARNING COURSES:

You'll still need to be tied to a dive shop when you take the class. If you don't specify one the system will do it for you. We have several we work with on SD so please let us know if you wish to go this route. The price is the same but we can offer you extra perks if you use our approved shops. It does not matter if the shop is near you or not...but it allows us to help with your cert process aka getting your card for you, we will do the practicals on trips for you such as ensuring you analyze tanks using different types of analyzer's and tables (skills you can't get online) and of course we'll dive with you on your first nitrox dives (no longer required but certainly good for reinforcement) and we'll ensure you have a nitrox computer to wear at no add'l charge and help you learn to set them etc. (Again no available online.)

So let us know if you want to do the e-learning option for Nitrox or any class and we'll send you a list of shops we support along with their e-learning links which automatically give them credit. :thankyou:

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#33 grim reefer

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Posted 04 January 2012 - 05:31 PM

The pp02 is determined by the fraction of O2 in the mix and the diving depth. The length of the dive has nothing to do with it. I think y'all might be talking about oxygen exposure.

For recreational diving the maximum operating depth is your primary concern. It's good to track the exposure but it's not usually much of a concern for recrational diving, and in practice most recreational divers do not even bother tracking it. I probably would track it if diving nitrox, many dives a day from a liveaboard. Every nitrox computer I have seen will track exposure for you.

Oxygen exposure tracking becomes critical when doing repetitive decompression diving. When in cave country I sometimes fill my doubles to 4000psi of EAN32 and carry another AL80 stage of EAN32 and make very long dives in the 100 ft range. This gives me *much* less decompression time than air would have. I then accelerate what decompression I do have to do with 100% O2. (See my avatar for a recent decompression stop). The downside of this is that the oxygen exposure can get quite high when doing a lot of repetitive dives. If I then takes a DCS hit (certainly very possible when doing decompression diving) the treatment options are a lot more limited since further O2 exposure in the chamber might not be a good idea due to whole body toxicity concerns.

Others may disagree, but IMO, nitrox is only becomes beneficial for recreational dives when you become limited by your NDL time and not by your air supply. For my breathing rate this started to happen in the 80-100 ft range, or even shallower with a lot of repetitive dives. So, recreational diving, I use nitrox when doing many repetitive dives over a short period of time or when diving in the 80-130 ft range.

Edited by grim reefer, 04 January 2012 - 05:38 PM.

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#34 Landlocked Dive Nut

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Posted 04 January 2012 - 06:38 PM

Yep, I watch my oxygen uptake as much as I watch my no-deco time and my gas supply! Even when I do resort-based diving, as I'm a Dive Nut and can do 4-5 dives a day there, too! :D
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#35 grim reefer

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Posted 04 January 2012 - 07:53 PM

Yep, I watch my oxygen uptake as much as I watch my no-deco time and my gas supply! Even when I do resort-based diving, as I'm a Dive Nut and can do 4-5 dives a day there, too! :D



Good point. Very well, then. I amend my post to read- it's critical for decompression divers and Dive Nuts who do 4-5 recreational nitrox dives a day to track their oxygen exposure :D

Edited by grim reefer, 04 January 2012 - 08:48 PM.

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#36 PlatypusMan

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Posted 04 January 2012 - 08:53 PM

Yep, I watch my oxygen uptake as much as I watch my no-deco time and my gas supply! Even when I do resort-based diving, as I'm a Dive Nut and can do 4-5 dives a day there, too! :D



Good point. Very well, then. I ammend my post to read- it's critical for decompression divers and Dive Nuts who do 4-5 recreational nitrox dives a day to track their oxygen exposure :D



You know those Cochran computers the Wreckwench makes available for trip participants who request them? They keep track of OTU and CNS exposure, in case you want to know that info.
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#37 Jerrymxz

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Posted 05 January 2012 - 07:39 PM

Yep, I watch my oxygen uptake as much as I watch my no-deco time and my gas supply! Even when I do resort-based diving, as I'm a Dive Nut and can do 4-5 dives a day there, too! :D



Good point. Very well, then. I ammend my post to read- it's critical for decompression divers and Dive Nuts who do 4-5 recreational nitrox dives a day to track their oxygen exposure :D



You know those Cochran computers the Wreckwench makes available for trip participants who request them? They keep track of OTU and CNS exposure, in case you want to know that info.


Another thing I like about the Cochran is it tracks your Time to Fly. It tracks your off gassing and calculates when you can safely fly but to increase safety it adds 12 hours to the calculation. Thatís how I monitor my nitrogen loading throughout a week of diving. If I get the Time to Fly up over 24 or 36 hours Iím going to make some changes to my profiles.

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#38 peterbj7

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Posted 06 January 2012 - 09:45 AM

I don't think I've owned a dive computer that didn't do all of those things...




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