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Certification card
Relationship between dive profile and nitrogen accumulation during descent
Relationship between dive profile and nitrogen accumulation during ascent
Leisure diving and dive table
Leisure diving and dive computer
How the dive computer works 1
How the dive computer works 2
How the dive computer works 3
Make a dive plan
Dive computer display 1
Dive computer display 2
Precautions for use
Emergency response
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■Descent and absorption of nitrogen
When you start descending, nitrogen will dissolve into your body at a rapid rate.
After that, the dissolution rate of nitrogen gradually becomes slower, and after a certain period of time, the nitrogen will no longer dissolve. |
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■Ascent and nitrogen discharge
When you start ascending, nitrogen is rapidly discharged from the body.
After that, the discharge rate of nitrogen gradually decreases, and after a certain period of time, nitrogen is no longer discharged. |
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■Nitrogen saturation
The state where nitrogen is neither absorbed nor discharged is called a saturated state.
The time for the tissue to become saturated is calculated by multiplying the time for the tissue to become half the nitrogen in the saturated state (halftime) by 6.
The time to saturate varies depending on the tissue, 0.5 hours for blood with a half time of 5 minutes and 72 hours for fat with a 720 minute half time.
It is said that the human body has tissues with slow dissolution of nitrogen and tissues with fast nitrogen penetration, and there are about eight types of tissues with saturation times of 18 minutes to 72 hours. |
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