Technical information

17
4 Functions during the dive
UWATEC
®
Smart dive computers
English
III
4.7 Oxygen toxicity (CNS O
2
%)
Smart calculates oxygen toxicity from depth values, time and the gas mixture
and displays it in the location of the ascent rate. The toxicity is expressed in 1%
increments of a maximum tolerated value (O
2
clock). The symbol <CNS O
2
> is
displayed together with the percentage.
An audible attention signal goes off if oxygen toxi
-
city reaches 75%. The symbol <CNS O
2
> flashes
and the ascent arrow appears.
Ascend to shallower depth to decrease oxygen
loading.
When oxygen toxicity reaches 100%, an audible
alarm goes off every 4 seconds. <CNS O
2
>, the
precentage value and the ascent arrow flash.
Danger of oxygen toxicity!
Start ascent at once.
• During an ascent and if the CNS O
2
% value does not increase anymore (due to
a lower partial pressure of oxygen), the audible warning is suppressed.
• During the ascent, the display of the oxygen toxicity is replaced by the ascent
rate. If the ascent is stopped, the display changes back to the indication of the
CNS value.
4.8 COM Tank pressure
Tank pressure is indicated in the lower display.
The tank pressure is also used for the calculation of the remain-
ing bottom time (RBT) and the workload.
When the tank pressure reaches the set warning
pressure (SmartTRAK) an audible alarm goes off and
the tank symbol is shown.
Default value of the warning pressure: 100 bar
(1450 psi).
Do not dive any deeper. Start to ascend soon.
In case of increased workload, Smart COM displays
a lung symbol in the lower display and an audible
attention message occurs.
In order to prevent additional saturation, reduce
exertion, relax and breathe more slowly.
DIVE TIME
DEPTH
DECO INFO
MAX.DEPTH
CNS O
2
%
NO STOP
%
%
C
DIVE TIME
DEPTH
DECO INFO
MAX.DEPTH
CNS O
2
%
NO STOP
%
%
C
4 sec
DIVE TIME
DEPTH
DECO INFO
MAX.DEPTH
NO
CNS O
2
%
NO STOP
%
%
C
Oxygen toxicity
TANK DATA
RBT
bar
TANK DATA
RBT
bar
4 sec
TANK DATA
RBT
bar
4 sec
WARNING
WARNING
WARNING
WARNING