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Divetalking » Adv. Open Water, Article, Dive Planner, Divetalking, Education, Enriched Air, Featured, NItrox, RDP, Recreational Dive Planner, Reference, Report, Specialties, Training » Understanding Enriched Air Nitrox

Understanding Enriched Air Nitrox

There are three cards, available. Two cards are Recreational Dive Planner, RDP for 32% and 36% Nitrox, the two most common mixes.

The third card contains tables for calculating mixes other than 32% and 36% and your Oxygen Exposure. Guess what? There are formulas you may use as well… Oh goodie….

If understanding dive tables is something you need to learn or brush up on, visit an article by clicking on Understanding the Recreational Dive Planner, RDP before continuing.

From this point on it will be presumed you know how to use the air tables. The two cards for 32% and 36% work exactly the same way but there is one card that may look new. It is this one

This card contains on one side, the Equivalent Air Depth, EAD

EAD Table

The EAD is used to Assist in calculating your NDL for a given percent of Oxygen in your cyinder as well as your PPO at depth. You may also figure your MOD from this table. This table exists because there are no printed cards for every single blend of Nitrox. Just two of the most common mixes, 32% and 36%. If you have a different mix, this is the card and table you will use.

Flip the card over and you get your Oxygen Exposure Level.

OET

The Oxygen Exposure Table keeps tract of your Oxygen load. It will also be used to plan your dives and verify you are where you’re suppose to be after performing your dives. To assure you are within your limits and warn you when you come to close to those limits.

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