Oxygen Fraction Setting Fo2 - Cressi ARCHIMEDE Manuel D'instructions

where PO2 stands for maximum partial Oxygen pressure
which, as we have already seen, can be set by the diver to
values ranging from 1.0 bar to 1.6 bar, with 0.1 bar increas-
es/decreases at a time by pressing the B (
i
By pressing the A ( ) button, you confirm the selected setting.
Press the M (Mode) to go back to the main screen (fig. 1).
IMPORTANT: the PO2 setting is kept until it is manually
reset by the diver on other values.
Related topics:
• 2.3.1. - Dive Parameter Setting.
• 3.5. - CNS Toxicity Display.
• 3.6. - PO2 Alarms.
3.4.2. - Oxygen Fraction Setting (FO2) in Nitrox.
IMPORTANT: Before every dive, always check the FO2
setting in your dive computer!
In order to set the exact Oxygen fraction contained in your
Nitrox, press the M (Mode) button until the (
displayed, as indicated in figure 3. At this point, parameters
can be changed according to the following procedure:
i
by pressing the A ( ) button, you select the dive parame-
ters in the following order for:
where FO2 is the oxygen percentage of our Nitrox supply.
NOTE: by keeping the B (
computer will automatically stop on the standard Nitrox 1
percentage (EAN32), or on the (
) button.
NOTE: when the oxygen percentage is changed, the dive
computer also tells you the maximum depth you can
reach with your Nitrox supply (MAX).
Press the B (
tions different from the standard one. With Archimede you can
set O2 fractions ranging from 21% (
increases of 1% at a time.
Finally, press the A (
you want to set which will be displayed on the screen.
Press the M (Mode) button to go back to the main screen (fig.1).
NOTE: you can also change the Nitrox setting even dur-
ing surface interval time (with desaturation under way).
This is a very important feature, specially for those who take
repeated dives in a day (e.g. instructors). You can change
your Nitrox supply, after a first dive with air, without having to
wait for desaturation to be completed.
) screen is
It is important that you follow and understand the following:
1 the Oxygen fraction setting is stored for the first 10 min-
utes of surface interval time from the end of the dive. Any
other dive within this interval will be interpreted by the
computer as a continuation of the previous dive, thus
assumed to be using the same cylinder and hence the
same Nitrox supply.
NOTE: FO2 CANNOT be changed within the first 10
minutes of surface interval from the end of the dive.
143
) button pressed, the dive
) setting.
) button, to manually set other oxygen frac-
i
) button to confirm the oxygen fraction
) to 50 %, with