Suunto Cobra2 User Manual download pdf (Page 53)

Multi level dive

A single or repetitive dive that includes time spent at various depths and whose

no decompression limits are therefore not determined solely by the maximum

depth attained.

Nitrox

In sports diving, refers to any mix with a higher fraction of oxygen than standard

air.

NOAA

United States National Oceanic and Atmospheric Administration.

No decompression time

The maximum amount of time a diver may remain at a particular depth without

having to make decompression stops during the subsequent ascent.

No decompression dive

Any dive which permits a direct, uninterrupted ascent to the surface at any

time.

NO DEC TIME

Abbreviation for no decompression time limit.

OEA = EAN = EANx

Abbreviations for oxygen enriched air nitrox.

OLF

Abbreviation for oxygen limit fraction.

OTU

Abbreviation for oxygen tolerance unit.

Oxygen tolerance unit

Used to measure the whole-body-toxicity.

Oxygen limit fraction

A term used by Suunto for the values displayed in the oxygen toxicity bar graph.

The value is either the CNS% or the OTU%.

Oxygen percentage or oxygen fraction in the breathing gas. Standard air has

21% oxygen.

Oxygen partial pressure

Limits the maximum depth to which the nitrox mixture can be safely used. The

maximum partial pressure limit for enriched air diving is 1.4 bar. The contingency

partial pressure limit is 1.6 bar. Dives beyond this limit risk immediate oxygen

toxicity.

Abbreviation for oxygen partial pressure.

RGBM

Abbreviation for Reduced Gradient Bubble Model.

Reduced Gradient Bubble Model

Modern algorithm for tracking both dissolved and free gas in divers.

Repetitive dive

Any dive whose decompression time limits are affected by residual nitrogen

absorbed during previous dives.

Residual nitrogen

The amount of excess nitrogen remaining in a diver after one or more dives.

SURF TIME

Abbreviation for surface interval time.

Surface interval time

Elapsed time between surfacing from a dive and beginning a descent for the

subsequent repetitive dive.

Tissue group

Theoretical concept used to model bodily tissues for the construction of

decompression tables or calculations.

Whole-body toxicity

Another form of oxygen toxicity, which is caused by prolonged exposure to

high oxygen partial pressures. The most common symptoms are irritation in

the lungs, a burning sensation in the chest, coughing and reduction of the vital

capacity. Also called Pulmonary Oxygen Toxicity. See also OTU.

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Suunto Cobra2 User Manual Page 53

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