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3. Meridian as a dive computer
SCUBAPRO MERIDIAN
3. Meridian as a dive computer
Along  these  lines,  Meridian  employs  a 
variable ideal ascent rate: its value ranges 
between 7..20m/min / 23..66ft/min and the 
actual breakdown by depth range is listed 
in the chart below.
DEPTH ASC SPEED
m ft m/min ft/min
0 0 7 23
6 20 8 26
12 40 9 29
18 60 10 33
23 75 11 36
27 88 13 43
31 101 15 49
35 115 17 56
39 128 18 59
44 144 19 62
50 164 20 66
If the ascent rate  is  greater than 110% of 
the ideal value the SLOW symbol appears. 
For  ascent rates  higher  than  140%,  the 
SLOW symbol starts to flash.
Slow symbol
Meridian  also  provides  an  audible  alarm 
in  case  of  ascent  rates  exceeding  110%: 
the intensity of the alarm increases in direct 
proportion  to  the  degree  that the  ideal 
ascent rate is exceeded. 
In  case  of  a  fast  ascent,  Meridian  may
require a decompression stop even within 
the no-stop phase because of the danger 
of microbubble formation. 
From  great  depth  a  slow  ascent  may 
cause  heightened  saturation  of  tissues 
and  an  extension  of  both  decompression 
duration and total  ascent  time.  At  shallow 
depth,  a  slow ascent  may  shorten the 
decompression duration. 
Excessive  ascent  rates  for  longer  periods 
are entered in the logbook. 
WARNING
The ideal ascent rate must not be exceeded at
any time since this could lead to microbubbles
in the arterial circulation which could cause
serious injury or death.
The alarm persists for as long as the ascent 
rate  is  110%  or  more  of  the  ideal  ascent 
rate.
3.11.8 MOD/ppO
2
WARNING
• The MOD should not be exceeded.
Disregarding the alarm can lead to oxygen
poisoning.
• Exceeding a ppO
2
of 1.6bar can lead to
sudden convulsions resulting in serious
injury or death.
If you exceed the MOD, the depth will start 
to flash and in the bottom row the MOD is 
displayed so you can see by how much you 
have exceeded it. In addition, Meridian will 
beep  incessantly. Both  the  flashing  of  the 
depth value  and the beeping will  continue 
for  as  long  as  you  stay  deeper  than  the 
MOD.
3.11.9 CNS O
2
= 100%
WARNING
When the CNS O
2
reaches 100% there is
danger of oxygen toxicity. Start procedure to
terminate the dive.
Meridian tracks your oxygen uptake via the 
CNS  O
2
clock.  If  the  calculated  value  of 
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  • Hi. What is error message E37 on the Meridian. Just did a dive and computer would not go into dive mode. When I came out it said E 37 Submitted on 27-4-2024 at 12:45

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