Uwatec Aladin 2G User Manual download pdf (Page 28)

5.3 Desaturation time, No-fly time and No-dive warning

5 minutes after a dive Aladin shows the time of day, the "do not fly time", the

no-dive warning (if applicable), the current altitude range and the prohibited

altitude range (->29).

No-fly time is the time in hours that should pass before a flight and is dis-

played and adjusted until the value becomes 0 hours.

Flying while Aladin displays "do not fly" may lead

to serious injury or death from decompression

sickness.

If the "no-dive" warning is visible during the

surface interval, the diver should not undertake

another dive.

If Aladin detects a situation of increased risk (due to the potential of microbubble

accumulation from previous dives or a CNS

level above 40%), the no-dive

symbol will appear on the display. The duration of the no-dive warning is visible

in the dive planner menu. Aladin recommends this as minimum surface interval in

order to reduce the number of microbubbles and/or to reduce the CNS

level

below 40%.

You should not undertake a dive as long as the no-dive warning message is

displayed on the computer screen. If the warning is prompted by microbubble

accumulation (as opposed to CNS O

over 40%) and you dive anyway, you

will have shorter no-stop times or longer decompression times. Moreover, the

duration of the no-dive warning at the end of the dive can increase consider-

ably.

5 Functions at the surface

III UWATEC Aladin TEC 2G



S

L

O

Time of day

Residual nitrogen bar

Ascent to altitude

range 4 prohibited

Surface interval

WARNING

Residual nitrogen bar



S

L

O

CNS O

DESAT

Do not fly icon

No-fly time

Oxygen toxicity

Desaturation time

No-dive

warning

No-dive

warning

To check the remaining desaturation time

and oxygen toxicity press .

To check the elapsed surface

interval press .

Desaturation time is determined either by

oxygen toxicity, nitrogen saturation or the

regression of microbubbles, depending on

which requires the longer time.

5.2 Residual nitrogen bar graph

The segments in the residual nitrogen bar graph will gradually turn off as Aladin follows the offgassing of

your

tissues during your surface interval. There is a 1:1 equivalence in the meaning of the segments between

diving and surface. Thus, on a repetitive dive the bar will resume from its status on the surface just prior

to the dive. There are two exceptions however:

• the uppermost segment will stay lit until the desaturation time is completely extinguished. This is done

to show that there is desaturation time left and that a dive started at this point will be logged as a repeti-

tive dive. If the remaining desaturation time is very short, this segment could however at first disappear

during the dive;

• during the 24 hours of an SOS-lock, all segments will stay on.

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Uwatec Aladin 2G User Manual Page 28

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