The Aladin® Air Z O2 uses the decompression calculation model known as the ZH-L8 ADT. This model uses
eight compartments or “tissue“ groups with nominal half time periods from 5 to 640 minutes. This model
differs considerably from other models by its consideration of the following additional physiological
processes:
1.Blood perfusion to the body‘s organs is not constant. Skin and muscle tissues are in particular subject
to changes in blood perfusion, depending on temperature and workload. Changes in blood perfusion to
these organs change their nitrogen saturation tolerance. The model used by the Aladin® Air Z O2 takes
these effects into account and thus the “skin“ and “muscle“ compartments in the Aladin® Air Z O2 show
variable half-time periods and saturation tolerances. Decompression information is calculated according
to the diver‘s individual workload and decrease in skin temperature. The decrease in skin temperature is
based upon the water temperature and the dive time. By considering these changes in saturation, the
time that must be spent at the surface prior to flying may be considerably lengthened, depending upon
the depth, time, and temperature of a dive, as well as the diver‘s workload during that dive.