# What does PO2 mean in diving?

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## When diving at 33 feet what happens to PO2?

So, if we descend to 10 meters/33 feet on air, our PO2 rises to . 42 ata (fraction of oxygen .

## What is PO2 in nitrox?

PO2 is the partial pressure of oxygen. P is the absolute pressure (depth divided by 10+1) The forward slash / is divided by. FO2 x P = PO2 = Fraction of oxygen x pressure = partial pressure of oxygen = Oxygen Dose. PO2 / FO2 = P = partial pressure of oxygen / Fraction of oxygen = pressure = Depth.

## How does PO2 change with increasing depth?

Put simply, as your depth increases, there is a corresponding increase in the partial pressure of oxygen. At the surface we are naturally adapted to PO2 at . … Therefore, when breathing compressed air at 66 feet, we are breathing in three times as much oxygen as we did on the surface.

## How deep can you dive without decompression?

There’s a bit of physics and physiology involved in a full explanation, but the short answer is: 40 metres/130 feet is the deepest you can dive without having to perform decompression stops on your way back to the surface.

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## What should I set my PO2 to?

In many cases, the default setting for the percentage of oxygen will be 21% while the default setting for PO2 is often 1.4. If you do not check these settings and adjust them to your dive plan you will not be getting the full benefit of the capabilities of your computer and Nitrox.

## What does PO2 mean?

Values of partial pressure of oxygen (PO2) and of carbon dioxide (PCO2) were measured by means of blood gas electrodes.

## What is the mod for 32 nitrox?

Nitrox MOD Table

in feet (saltwater) in meters (saltwater)
30% 121 43.3
31% 116 41.6
32% 111 40.0
33% 107 38.5

## What is the MOD for 36% nitrox?

Based on the 1.4 ATA limit, a nitrox mix with 32 percent oxygen has an MOD of 112 feet, and 36-percent nitrox has a maximum depth of 95 feet.

## What may happen if you go too deep or stay too long?

What may happen if you go too deep or stay too long during a dive? -However, if your dive lasted for a long time, or you made a deep dive, the dive computer will indicate that you must stop at a particular depth to allow the excess nitrogen in your body time to escape without causing problems.

## At what depth is nitrox toxic?

However, when diving on nitrox, the potential for oxygen toxicity lurks well within the depth range of recreational diving: the maximum depth on 32 percent nitrox is 121 feet; on 36 percent nitrox, it’s just over 100 feet. Many divers regularly cruise at these depths and even deeper without giving it a second thought.

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## What’s decompression sickness?

Decompression sickness is a disorder in which nitrogen dissolved in the blood and tissues by high pressure forms bubbles as pressure decreases. Symptoms can include fatigue and pain in muscles and joints.

## Why does partial pressure increase with depth?

Dive to just 10 meters deep and that pressure is doubled – because water is much denser than air, it exerts a much greater compressive force on your body. For every additional 10 meters deeper you dive, the pressure on your body increases by 1 bar.