11
Aladin
®
Pro Ultra …
I Uwatec
®
Aladin
®
Pro Ultra
English
I
Aladin
®
Pro Ultra considers the short term toxic
effect of oxygen (CNS damages) by means of the so
called „oxygen-clock“. It is based on a list which
shows the units of toxicity for oxygen per unit of
time and is dependent on the ppO
2
. The indication
of toxicity is shown as „CNS O
2
%“ (= relative toxi-
city of oxygen for the central nervous system). CNS
O
2
= 0% corresponds to the normal state before
the first dive, and CNS O
2
= 100% corresponds to
the critical upper limit. The list, initially published by
the US Navy, is nowadays known by the name
IANTD-list. We modified this list for the use with
Aladin
®
Pro Ultra in cooperation with Dr. Bill
Hamilton, Hamilton Research Ltd. (Tarrytown, NY),
a well-known specialist.
The long term kind of oxygen poisoning has prac-
tically no relevance for diving with independent
diving equipment and is therefore not considered in
the design of Aladin
®
Pro Ultra.
If nitrox is used for diving profound additional trai-
ning is needed because of the physiological pecu-
liarities of oxygen and the changing decompression
due to the reduced percentage of nitrogen.
Additional technical problems with the use and the
maintenance of parts of the equipment are additio-
nal potential dangers when diving with nitrox.
Therefore, we recommend strict adherence to the
following guidelines.
3 Safety Considerations
1.Only dive with nitrox if you have been trained thoroughly by a recognised
agency.
2.Only use Aladin
®
Pro Ultra with open breathing systems. Aladin
®
Pro Ultra
must be set for a determined gas mixture. In partially-open and in closed cir-
culation-systems, the gas mixture can vary considerably. The calculations may
yield results different from those necessary for the actual mixture.
3.Only use Aladin
®
Pro Ultra for diving with an independent breathing appara-
tus. Aladin
®
Pro Ultra is not designed for long-term exposures with Nitrox.
