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Functions during the dive
4.4.8 Partial pressure of oxygen (ppO
Max Operating Depth MOD
The MOD is a function of ppO
or exceeded Aladin TEC 3H sends an audible attention message and the MOD is displayed
(flashing) in the lower left corner.
Ascend to a depth shallower than the displayed MOD in order to diminish the danger of oxygen
poisoning.
The MOD should not be exceeded. Disregarding the warning can lead to oxygen poisoning.
4.4.9 Oxygen toxicity (CNS O
Oxygen toxicity
4s
26
max) / Maximum Operating Depth (MOD)
2
The maximum partial pressure of oxygen ppO
determines the Maximum Operating Depth (MOD). Diving deeper than the
MOD will expose the diver to oxygen partial pressures higher than the set
maximum level.
The ppO
max and consequently the MOD can be reduced manually
2
(->22, setting the gas mixture, point 5).
In addition the maximum allowed ppO
or with "set 1" between 1.2 to 1.6bar ->69.
When MOD is exceeded, alarm goes on and MOD value will replace tank
pressure value.
WARNING
max and the mixture used. If during the dive the MOD is reached
2
WARNING
%)
2
Aladin TEC 3H calculates oxygen toxicity based on depth, time and the
gas mixture and displays it in the location of the ascent rate. The toxicity is
expressed in 1% increments of a maximum tolerated value (O
The symbol "CNS O
" is displayed together with the percentage.
2
An audible attention signal goes off if oxygen toxicity reaches 75%.
The symbol "CNS O
2
oxygen loading and consider terminating the dive.
When oxygen toxicity reaches 100%, an audible alarm goes off every
4 seconds. "CNS O
oxygen toxicity!
Start procedure for terminating the dive.
F
• During an ascent and if the CNS O
anymore (due to a lower partial pressure of oxygen), the
audible warning is suppressed.
• During the ascent, the display of the oxygen toxicity is replaced
by the ascent rate. If the ascent is stopped, the display
changes back to the indication of the CNS value.
can be set by means of LogTRAK
2
WARNING
" flashes. Ascend to shallower depth to decrease
WARNING
" and the percentage value flash. Danger of
2
max (default 1.4bar)
2
clock).
2
% value does not increase
2
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