Mares Nemo - Dive - Nitrox (EAN)

EN
Dive - Nitrox (EAN)
Due to the lower percentage of nitrogen in the breathing mix, oxygen-
rich mixtures make it possible to extend the no-decompression limits, as
compared with the same dive with air. However, the higher oxygen
content in the mix exposes the diver to oxygen toxicity hazards which
are not generally encountered in recreational dives with compressed air.
In Nitrox mode, Nemo computes oxygen toxicity on the basis of the dive
time, the depth and the oxygen percentage setting, providing indications
which enable the diver to remain within the safe limits for oxygen exposure.
To do a Nitrox dive, it is necessary to select Nitrox in
the Set Dive - Mode menu. Nemo handles Nitrox dives
in a similar manner to compressed air dives, with the
same functions and procedures for selecting the Dive
mode. The only differences between compressed-air and
Nitrox dives concern the monitoring and display of
Nitrox dive parameters in addition to the normal air dive
parameters (discussed in the preceding section).
The following section only describes the dive parameters
specific to Nitrox dives, and the differences in the
display layouts.
WARNING
Before the dive, make sure you have
correctly set up all the Nitrox dive
parameters: percentage of oxygen in the
mix and limit for the partial pressure of
oxygen, which together determine the
maximum depth of the dive.
WARNING
It is essential to correctly set the oxygen
percentage in the mix to ensure correct
readouts of:
- no decompression time remaining;
- decompression stop times;
- alarm on exceeding the maximum
permitted PPO
2.
WARNING
The use of oxygen rich mixes exposes the
diver to different hazards from those
associated with compressed air. The diver
should be aware of these risks and
understand how to avoid them.
WARNING
Nemo should be used for diving with
oxygen rich mixes (Nitrox) only by divers
who have the necessary certification.
Lack of appropriate diver training may
result in possibly serious injury.
WARNING
The user is advised to carefully read the
section on compressed air diving before
reading the section on Nitrox dives.
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