51
III Uwatec
®
Aladin
®
Air Z
English
III
6 Diving in Mountain Lakes
In order to assure optimal decompression also at higher altitudes, the 3 m decompression stage is divided
into a 4 m stage and a 2 m stage (the prescribed decompression depths are in consequence 2 m, 4 m,
6 m, 9 m...).
Aladin
®
Air Z can be used as decompression computer up to an altitude of 4000
m. If atmospheric pressure is below 620 mbar (higher altitude than
4000 m above sea level), no decompression information is displayed any more.
The indication of the RBT is also impossible, since decompression data are
necessary for its calculation (tank pressure is still displayed, of course). Dive-
plan-mode can no longer be started, since no decompression information is
available. Beside the display of the altitude section 3, <HI> (=high) appears to
tell the diver that he will not get any decompression information for the dive.
Very small differences in the pressure sensors can cause an indication of diffe-
rent altitude sections of two dive computers at the same altitude on the frin-
ges of the altitude ranges. These differences are not meaningful and do not
interfere with the safety of Aladin
®
Air Z. But if an altitude section is displayed
at sea level or the altitude informations of two computers differ by more than
one altitude section (e.g. section 2 instead of 0), there may be a defect
of the computer. In this case, send your computer back to your retailer for
checking.
