What is ppo2 Max?

Asked by: Lily Young

PPO2 is the maximum partial pressure of oxygen we want to have during the dive.

What PPO2 is the limit?

Acceptable exposure levels



For in-water oxygen decompression, guidelines recommend limiting a resting free-swimming diver’s PPO2 level to a maximum of 160kPa, or 1.6bar.

What is PPO2 for on dive computer?

For example, a diver breathing air (21 percent O2) at 132 feet (5 ata) is breathing a partial pressure of oxygen (PPO2) of 1.05. This would be equivalent to breathing 105 percent oxygen at the surface.

How is the PPO2 of a breathing gas calculated SSI?

10. How can the ppO2 of a breathing gas be calculated? A. Multiply ambient pressure by the fraction of oxygen (FO2) found in the breathing gas.

How deep can you dive with Trimix?

90 metres/300 feet

The Tec Trimix Diver course takes experienced tec divers and turns them into extreme divers who go deeper and visit pristine sites where few others will ever go. During the course, you’ll make dives as deep as 90 metres/300 feet, but once you earn this tough certification, there are few limits.

What is o2 toxicity?

Oxygen toxicity is lung damage that happens from breathing in too much extra (supplemental) oxygen. It’s also called oxygen poisoning. It can cause coughing and trouble breathing. In severe cases it can even cause death.

What should I set my PO2 to?

As of September 5, 2015, the NOAA Diving Program’s maximum oxygen partial pressure (PO2) level was reduced from 1.6 ATA to a maximum of 1.4 ATA. This PO2 level is currently the standard in the military and other federal, civilian and the vast majority of academic diving programs.

Is it worth getting nitrox certified?

Is a nitrox certification “worth it”? If you fancy staying down longer and getting back in the water sooner, then yes; getting nitrox certified is worth it. You can take more photos, wave to more turtles, and spend more time exploring at depth. Many divers wait too long to try nitrox.

Why is nitrox better for diving?

Divers who use nitrox absorb less nitrogen, making them stay underwater for longer. They’re also less likely to get decompression sickness. It’s worth noting that older divers and those who’ve experienced decompression sickness or physical injuries can reduce no-decompression limits with the gas.

How long can you dive at 30 feet?

Well strictly speaking they are time limits i.e (NDL limits) on dives to 12 meters (30 feet) however you’d need to be in the water for close to 4 hours on the first dive for this to be an issue.

Why do divers breathe trimix?

And, finally, there is the so-called “helium penalty.” Current decompression theory suggests that breathing trimix increases decompression obligation. This is due to helium’s propensity to enter body tissues quickly (due to its lightness) and exit them quickly on ascent.

What is hypoxic trimix?

Trimix is a breathing gas consisting of oxygen, helium and nitrogen and is used in deep commercial diving, during the deep phase of dives carried out using technical diving techniques, and in advanced recreational diving.

How do you blend trimix?

So if you want to blend in nitric 32. You need to know how much oxygen you need and that's pretty simple the oxygen pressure you need is simply 14 of the desired fuel pressure.

What is the difference between heliox and trimix?

Nitrox is used for relatively shallow recreational dives, heliox is used for deep diving, and trimix is used for dives to depths at which the high-pressure nervous syndrome may be expected and for short, deep dives.