Technical information

13
3 Aladin
®
Air Z O
2
– Reducing risks of Decompression Sickness
I Uwatec
®
Aladin
®
Air Z O
2
I
By considering your individual gas mixture depth and time profile, as well as workload and water tempe-
rature, the Aladin
®
Air Z O
2
can be considered a personal diving control instrument. Relying on the latest
results of medical and physiological research for its decompression modeling, the Aladin
®
Air Z O
2
differs
from other diving computers in a number of significant ways:
• Diving with SCR and Oxy2 enables the calculation of oxygen toxicity and decompression to be on
the basis of the actual composition of the inhaled gas.
• The Aladin
®
Air Z O
2
indicates on the lower display the actual oxygen percentage, the ppO
2
and if
needed O
2
attention messages and alarms.
• The workload is calculated from the difference between the automatically registered oxygen fraction
of the premixed gas and the actual oxygen percentage of the inspired gas mixture. The sensitivity of
the workload detection can be adjusted with DataTalk. Also the diver selected maximum O
2
consump-
tion supported by the SCR has to be programmed in with DataTalk.
• The ZH-L8 ADT decompression calculation model considers eight body tissues as well as the diver‘s
workload and ambient temperature. This allows for an even more precise calculation of a modelled risk
for decompression sickness which can lead to greater diving safety.
• The gas data – measured by an Oxy2 or a pressure transmitter – are transmitted by wireless to the Ala-
din
®
Air Z O
2
. Faulty transmission of data between the transmitter and Aladin
®
Air Z O
2
is prevented by
a number of precautions.
• If a pressure transmitter is used, the tank pressure can be easily checked at any time. By monitoring
the pattern of the changes in gas pressure, the Aladin
®
Air Z O
2
calculates the diver‘s workload and pro-
vides a prediction of the remaining time allowed at the current depth based upon tank pressure and gas
consumption. Thus the remaining bottom time (RBT) displayed on the Aladin
®
Air Z O
2
considers depth,
tank pressure, as well as gas consumption to give the diver a more accurate calculation of when the
ascent must be begun according to the decompression program.
If your diving cylinder is equipped with a reserve or “J“-type valve, make cer-
tain that the reserve function is in an open (down) position. Failure to keep
the reserve open will result in the improper calculation of the dive data which
depends on tank pressure.
• The Aladin
®
Air Z O
2
uses both optical and acoustic alarms. The acoustic alarm uses varied sound
signals to assist in establishing the reason for the alarm.
WARNING