Technical information

36
3. Meridian as a dive computer
SCUBAPRO MERIDIAN
3. Meridian as a dive computer
Current Altitude
Class
Ascent to Altitude
Class 4 prohibited
In the example above, the diver is presently
at Altitude Class 2 and should not reach
altitudes of class 4 (prohibited Altitude
Class).
Meridian has an audible altitude warning:
if you were to reach an altitude, that
according to Meridian, is incompatible with
your current residual nitrogen levels, it will
warn you with an altitude warning.
3.7.4 Decompression dives in
mountain lakes
In order to assure optimal decompression
even at higher altitudes, the 3m/10ft
decompression stage is divided into a
4m/13ft stage and a 2m/7ft stage in
Altitude Class 1, 2 and 3.
If atmospheric pressure is below 610mbar
(altitude higher than 4000m/13300ft), no
decompression calculation is carried out
by Meridian (automatic GAUGE mode). In
addition, the dive planner is not available in
this altitude class.
3.8 No-dive warning after a
dive
If Meridian detects a situation of increased
risk (due to the potential microbubble
accumulation from previous dives or a CNS
O
2
level above 40%), the NO DIVE symbol
will appear on the display to advise you
against performing another immediate dive
right away. The suggested time interval that
you should wait prior to diving is shown on
the dive mode display.
No-dive warning
WARNING
If the “no-dive” warning is visible during
the surface interval, the diver should not
undertake another dive.
If the warning is prompted by microbubble
accumulation (as opposed to CNS O
2
over 40%) and you dive anyway, you
will have shorter no-stop times or longer
decompression times. Moreover, the
duration of the microbubble warning at the
end of the dive can increase considerably.