jwc3
Contributor
A Nitrox course will make all of this clear to you.
Agreed. Don't change your computer's default settings unless you're absolutely sure you know what you're doing.
Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
A Nitrox course will make all of this clear to you.
When the pO2>1.6 the risk of seizure is very high, although it is clear that many tech divers will expose themselves to these higher partial pressures. I think the record for an air dive is over 400 feet, which means pO2>13 if my math is correct. So clearly people can tolerate very high pO2 and survive but not without great risk.
QUOTE]
Actually that would be a pO2 of 2.75. 13 is the ATA (atmospheres of pressure). Multiply ATA x FO2 (0.21 for air) to get pO2.
I would echo everyone elses's comments:
1. O2 tox is a serious issue, but you can't always predict your individual response to high pO2's an it can change from day to day and dive to dive. In general, lower is less risky.
2. Take a nitrox class and ask lots of questions. My basic nitrox class gave a good overview for the Recreational diver, but Advanced Nitrox/Dec class was significantly better to help understand the implications for Technical diving. I didn't know what I didn't know
I didn't know what I didn't know
If i am diving recreationally, and at a max depth of 40m, does it not mean that i should set the ppO2 to 1.05bar i.e. 5 ata times by 21%?