Nitrox Information (O Information) - SubGear XP10 Bedienungsanleitung

Terminology / Symbols
1.3 Nitrox information (O
For dives with compressed air in normal recreational diving, nitrogen is the decisive gas for the
decompression calculations. When diving with Nitrox, the risk of oxygen toxicity rises with the increase
of the fraction of oxygen and the increase of depth and can limit dive time and the maximum depth.
XP10 includes this in the calculations and displays the necessary information:
O % mix Fraction of oxygen: The fraction of oxygen in the Nitrox mixture can be set between
2
21% (normal compressed air) and 50% in 1% increments. Your selected mix will be
the basis for all calculations.
ppO max Maximum allowed partial pressure of oxygen: the higher the fraction of oxygen in
2
the mixture, the shallower the dive depth at which this value of the partial pressure
of oxygen is reached. The depth at which ppO
Operating Depth (MOD).
When you enter the settings for the gas mixture, XP10 will display the ppO
setting and the corresponding MOD. XP10 warns you audibly and visually once the
depth is reached at which the ppO
F
• Default setting of ppO
• The CNS O
CNS O % Oxygen toxicity: With the increased percentage of oxygen, the oxygen in the tissues,
2
especially in the central nervous system (CNS), becomes important. If the partial
pressure of oxygen rises above 0.5bar, the CNS O
of oxygen is below 0.5bar, the CNS O
to 100%, the closer the limit where symptoms of oxygen toxicity can occur.
Nitrox diving may only be attempted by experienced divers after proper training from an
internationally recognized agency.
18
information)
2
2
The value of ppO max can be set by means of Dive.Log or with "set 1" between
2
1.2 and 1.6bar (->32). It can also be changed at the time of setting the gas mixture
(->23).
% value/alarm is not influenced by the selected ppO
2
Depth
at which ppO
2
reaches 0.5bar
for three
commonly
used mixes
21% 13m (43ft)
32% 6m (20ft)
36% 4m (13ft)
! WARNING
2
reaches the maximum allowed value ->23.
2
max is 1.4bar.
value increases, if the partial pressure
2
value decreases. The closer the CNS O
2
CNS O %
2
decreases
CNS O %
2
increases
max is reached is called Maximum
max setting.
2
ppO
2
0.21bar
0.5bar
max limit
2
value is
2