What's fun is having to clear your ears in the morning when you get up if you have done more than one dive on a higher oxygen content gas. 
First Time Nitrox Diving
- Thread starter bdizzle
- Start date
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GillScales
Contributor
Iirc most places on st croix use air. Go with cane bay or order your tanks the day before So the shop you're using can get em filled there.
ianr33
Contributor
1) Assuming your mix is no more than 32%, do not go deeper than 110 feet
2) Make totally certain your computer is set correctly before each dive. (Some computers have an annoying habit of resetting to 79%N2 for deco calculations and 50% O2 for oxygen toxicity calculations if you do not manually set the O2% before each dive)
3)Have Fun!
2) Make totally certain your computer is set correctly before each dive. (Some computers have an annoying habit of resetting to 79%N2 for deco calculations and 50% O2 for oxygen toxicity calculations if you do not manually set the O2% before each dive)
3)Have Fun!
As others have said, don't be nervous. Just be aware. You should always check your depth constantly anyway. Go out and have fun. Computer diving will make it fairly simple. 1.4 is fine. 1.3 will just make your MOD shallower. Always check your computer in between dives and you will be fine. Nothing worse than having to sit at 60 ft because you forgot to change your o2 setting.
Nothing to be nervous about, bdizzle. And let fisheater's critical comments slide right off. Diving nitrox feels no different--at least during the dive--from diving air. If you did your course planning dives by using the tables rather than by using the computer, I can understand how setting your computer up might raise questions you didn't get answers to during your time with your instructor. Essentially, dive computers have the option of resetting the ppO2 fraction manually just in case you want to. Unless you have a well thought-out reason for setting it at a fraction other than 1.4, as some technical divers do for decompression stops, just go with 1.4 since it's the recreational standard, industry wide.
Here are a couple of SB threads you might find interesting:
http://www.scubaboard.com/forums/ad...06-oxygen-partial-ppo2-setting-dive-comp.html
http://www.scubaboard.com/forums/ba...-pressure-do-you-use-nitrox-calculations.html
Here are a couple of SB threads you might find interesting:
http://www.scubaboard.com/forums/ad...06-oxygen-partial-ppo2-setting-dive-comp.html
http://www.scubaboard.com/forums/ba...-pressure-do-you-use-nitrox-calculations.html
Any way to find out of the oceanic vt4 is one of these "resetting" computers?
During my class I used tables rather than the computer. Been reading up on the settings and functions for nitrox diving.
I appreciate all the great responses from you guys...thank you!
During my class I used tables rather than the computer. Been reading up on the settings and functions for nitrox diving.
I appreciate all the great responses from you guys...thank you!
Oceani a all have that feature on it.
Just noticed this in the manual. the FO2 50% default option...on or off. Currently set to Off. Thank you for your help Wei
Look for something in the nitrox menu that says fo2 50 on/off. That is the feature. On will reset the nitrox mix to 50 after each nitrox dive. Off will leave it at the nitrox mix you set at the beginning of the day. Pretty easy to get around.
Good deal. I used to teach with oceanic computers so if you have questions just ask.
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