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LUNA 2.0 AI USER MANUAL
3 .14 Diving with MB-levels
Microbubbles are tiny bubbles that can build up inside a diver’s body during a dive and normally dissipate naturally
during an ascent and on the surface after a dive. Dives within no-stop times or the observance of decompression
stops do not prevent the formation of microbubbles in the venous blood circulation.
Dangerous microbubbles are those migrating into the arterial circulation. The reasons for the migration from the
venous blood circulation to the arterial circulation can be because of a build-up of microbubbles collecting in the
lungs. SCUBAPRO has equipped the LUNA 2.0 AI with technology to help protect divers from these microbubbles.
With the LUNA 2.0 AI you can choose – according to your specic needs – a MB-level that will provide a level
of protection from microbubbles. Diving with MB-levels includes additional ascent stops which slow the ascent
process, giving the body more time to desaturate. This works contrary to the formation of microbubbles and may
increase safety.
The LUNA 2.0 AI features 6 microbubble levels (L0- L5). Level L0 corresponds to SCUBAPRO’s well-known
decompression model ZH-L16 ADT PMG and does not require additional stops due to microbubble formation.
Levels L1 to L5 offer additional protection from microbubble formation, with level L5 offering the highest level and
most protection.
Similar to the display of information during decompression dives or dives within no-stop time, the LUNA 2.0 AI
displays the depth and duration of the rst level stop as well as the total time of ascent as soon as the MB no-stop
time has run out. As the MB no-stop time is shorter than the ordinary no-stop time, you will be required to perform
a stop sooner than a diver using level L0.
If you ignore a required stop, the LUNA 2.0 AI will simply step down to a lower MB-level. In other words, if you
choose level L4 prior to the dive, and during the dive you ignore the L4’s recommended stops, the LUNA 2.0 AI will
automatically adjust the setting to level L3 or lower.
Comparison of dives with MB-level L0 and MB-level L5
When two LUNA 2.0 AI dive computers are used simultaneously, with one unit set to a MB-level of L5 and the other
to a MB-level of L0, the no-stop time for the L5 unit will be shortened and more stops will be required before the
L5 diver has the same obligation of a decompression stop as the L0 diver. These additional stops help dissipate
microbubbles.
L0
L5
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