ALADIN ALADIN AIR Z O2, Operating Manual, Page: 44 / 104

44
1 Terminology/Symbols
III Uwatec ® Aladin ® Air Z O
2
Tank pressure: Only available if a pressure transmitter is used.
RBT: (Remaining Bottom Time) time, for which the gas
mixture supply is sufficient at the current depth, until
ascent must be started (only with pressure transmitter).
Illustration on page 43 and explanation on page 65.
1.4 Nitrox information (O
2
information)
For dives with compressed air in normal recreational diving nitrogen is the decisive gas for the decom-
pression calculations. When diving with nitrox, the toxicity of oxygen rises with the increase of the portion
of oxygen and increasing depth and can limit dive time and the maximum depth. Aladin
® Air Z O
2
inclu-
des this in the calculations and displays the necessary information:
<O
2
%>: The Oxy2 is fitted “in line“ to the inhalation hose of the semi closed
rebreather (SCR) and measures the actual oxygen fraction of the inspired gas
mixture. This is the basis for the calculation of both oxygen toxicity and decom-
pression. The Aladin
® Air Z O
2
warns the diver acoustically and optically if the
oxygen fraction is lower than 19%.
<O
2
%MIX> Percentage of oxygen: For open circuit systems (pressure transmitter) the
percentage of oxygen in the Nitrox mixture has to be entered manually. It can
be set between 21% (normal compressed air) and 99% O
2
.
<pO
2
> Partial pressure of oxygen: When used with an Oxy2 the Aladin ® Air Z O
2
shows the actual value.
tank data
bar
D