8. Diving with two gas mixtures
Changing the gas mixture
Switch depth
DEPTH
Switch to gas d
MOD gas d
After immersion, Aladin 2G automatically
selects gas 1.
WARNING
When during an ascent the switch depth is
reached (MOD gas d), an audible warning goes
off and "GAS d", its MOD and O
30 seconds.
Procedure:
1. Switch to the regulator with gas d and
start breathing.
2. Confirm the change by pressing
within 30 seconds. "GAS d" and the
oxygen fraction of gas d is displayed for
5 seconds without blinking.
To interrupt the switch process at any
point, press
.
DEPTH
Change to gas d confirmed
52
4s
DIVE TIME
NO
S
L
O
W
% blink for
2
DIVE TIME
NO
S
L
O
W
No change of gas mixture:
If a diver fails to confirm the change of
gas mixture or interrupts the switching
procedure by pressing
displays "GAS 1", the MOD and the oxygen
fraction for 5 seconds. Aladin 2G continues
to calculate with gas 1 only and adapts the
decompression calculation accordingly.
)
NOTE:
If after the decompression calculation
has readjusted itself to reflect the
failed switch the diver goes again
below the switch depth (MOD of
gas d), Aladin 2G will revert to the
decompression
calculation
considers gas d also, since upon
ascending again the diver will have
a renewed opportunity to perform
the switch once the switch depth is
reached.
DEPTH
DIVE TIME
NO
S
L
O
W
Failed or interrupted switch
MOD gas 1
Belated change of gas mixture:
A diver can catch up on a required change
to gas d until he reaches the surface.
1. Initiate the switching process by press-
ing
. Aladin 2G displays "GAS d",
MOD and the oxygen fraction of gas d
blinking for 30 seconds.
2. Switch to the regulator with the deco
gas mixture and start breathing.
3. Confirm the change by pressing
. "GAS d" and the oxygen fraction of
the deco gas is displayed for 5 seconds
without blinking. The decompression
calculation will readjust accordingly.
(Press
to interrupt the switch
process at any time.)
, Aladin 2G
that
SCUBAPRO ALADIN 2G