5.4 Warning of bubbles
Through repetitive dives microbubbles may accumulate in the lungs if the sur-
face interval is not long enough. Ignoring decompression stops or an excessi-
ve ascent rate can also lead to bubbles in tissues. In order to reduce the risk of
decompression sickness for future repetitive dives, the surface interval should
be planned long enough to reduce the risk of decompression sickness. If
Aladin
®
Pro Ultra calculates that the formation of microbubbles may occur
during the surface interval, it will advise a diver to extend the surface interval.
If the display <Atn> (=attention) is visible instead of the depth during the sur-
face interval (surface-mode), the diver should not undertake another dive.
Through the extension of the interval the diver may prevent a high concentra-
tion of bubbles in the lungs during the planned dive and avoid a higher risk
situation.See also page 70.
• If the dive has to be made during <Atn>-time, the <Atn> time of the following
dive can increase considerably.
• If the dive is made in spite of the display <Atn>, the diver must cope with a
clearly shorter no-stop time and an extension of decompression.
50
5 Functions at the Surface
III Uwatec
®
Aladin
®
Pro Ultra
h
h
DO NOT FLY
DESATURATION
depth
dive time
max. depth
deco info
%
O
2
2
% MIX
% MIX
CNS O
2
LIMIT