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In the NITROX mode, the default setting for MIX1 is standard air (21% O
2
). It remains
in this setting until the O
2
% is adjusted to any other percentage of oxygen (22% -
100%). The default setting for maximum oxygen partial pressure is 1.4 bar, however
you are able to set it in the range of 0.5 - 1.6 bar.
MIX2 is set to OFF by default. To set MIX2 , refer to Section 6.2.4. Gas change and
multiple breathing gas mixes. Oxygen percentages and maximum oxygen partial
pressures for MIX2 are stored permanently.
NOTE
If MIX2 is set OFF, the computer will retain the manually entered
values for the oxygen percentage and maximum oxygen partial
pressure for MIX1 for about two hours, after which it will revert to
the default settings. If MIX2 is set ON, the computer will retain
the settings until changed.
If MIX2 or MIX3 are set to off and have an oxygen content of value
of 21%, the computer will retain the manually entered values for
the oxygen percentage and maximum oxygen partial pressure
for MIX1 for about 2 hours, after which it will revert to default
settings. If MIX2 or MIX3 have an oxygen content of 22% or
greater, the computer will retain the settings until changed.
6.2.2. Oxygen displays
When NITROX mode is activated, the display will show the information in the figure
below. In NITROX mode, the maximum operational depth is calculated based on set
O
2
% and PO
2
values.
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