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3. Meridian as a dive computer
3. Meridian as a dive computer
37
English
SCUBAPRO MERIDIAN
3.9 SOS
If  you  stay  above  a  depth  of  0.8m/3ft  for 
more  than  3  minutes  without  observing  a 
prescribed  decompression  stop,  Meridian 
will  switch  into  SOS mode.  Once  in  SOS
mode  Meridian  will  lock  up and  will  be 
inoperable as a dive computer for 24 hours. 
If  it  is  used  for  diving  within  the  24hours 
of  an  SOS lock,  it  will  automatically 
switch  to  GAUGE  mode  and  provide  no 
decompression information.
WARNING
• Violating a mandatory decompression
obligation may result in serious injury or
death.
• Serious injury or death may result if a diver
does not seek immediate treatment should
any signs or symptoms of decompression
sickness occur after a dive.
• Do not dive to treat symptoms of
decompression sickness.
• Do not dive when the dive computer is in
SOS mode.
SOS
The  display  shows  the  same  information 
as in presence of  desaturation, but at the 
lowest row SOS is displayed.
3.9.1 Desaturation reset
Meridian allowsyou to reset the desaturation 
in the dive computer. Any tissue saturation 
information from a recent dive will be reset 
to  zero  and  the  dive  computer  treats  the 
next  dive  as  a  non-repetitive  dive.  This  is 
useful when the dive computer is loaned to 
another diver who has not dived in the last 
48 hours. 
F
NOTE: After a desaturation reset the
change between the modes: GAUGE,
APNEA and SCUBA are possible
immediately. However, since the
GAUGE and APNEA modes are not
tracking your tissue nitrogen loading,
it is recommended to keep the initial
intervals between changes on modes.
WARNING
Diving after having reset the desaturation
is extremely dangerous and is very likely to
cause serious injury or death. Do not reset the
desaturation unless you have a valid reason to
do so.
F
NOTE: Removing and replacing the
battery will not reset the desaturation.
Meridian stores tissue saturation
information in non-volatile memory.
For the time during which the dive
computer is without battery, the
desaturation calculation is frozen and
resumes from where it had left off as
soon as a new battery is installed.
3.10 Diving with nitrox or with
another decompression
gas
Nitrox  is  the term  used  to  describe
breathing gases  made  of  oxygen-nitrogen 
mixes with oxygen percentage higher than 
21%  (air).  Because  Nitrox  contains  less 
nitrogen  than air,  there  is  less  nitrogen 
loading  on  the  diver’s  body  at  the  same 
depth as compared to breathing air.
However,  the  increase  in  oxygen 
concentration in Nitrox implies an increase 
in oxygen partial pressure in the breathing 
mix  at  the  same  depth.  At  higher  than 
atmospheric  partial  pressures,  oxygen 
can have toxic effects on the human body. 
These can be lumped into two categories:
Sudden  effects  due  to  oxygen  partial 
pressure over 1.4bar. These are not related 
to the length of the exposure to high partial 
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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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