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4 Functions during the Dive
III Uwatec
®
Smart dive computers
English
4.1 Immersion
After immersion, starting at a depth of about 0.8 m (3 ft), all diving functions are monitored, i.e. depth
and dive time displayed, maximum depth stored, saturation of tissues calculated, no-stop time or decom-
pression prognosis determined, ascent rate controlled and displayed and the correctness of the decom-
pression procedure supervised. The Smart Com shows in addition the tank pressure and the Remaining
Bottom Time (RBT).
4.2 Dive time
The whole time spent below a depth of 0.8m (3 feet) is displayed as dive time
in minutes. The time above 0.8m (3 feet) is counted as dive time only then, if
the diver descends within 5 minutes below 0.8m (3 feet).
While the dive time is running, the colon on the right of the figures is flashing
in one second intervals. Maximum dive time displayed is 199 minutes.
If a dive lasts longer than 199 minutes the dive time display starts
again at 0 minutes.
4.3 Current depth
Current depth is given in 10 cm-increments (1 foot). On switching
on and at a diving depth of less than 0,8 m (3 ft) the display shows
<– – –>.
Depth measurement is based on freshwater. Therefore,
Smart shows a slightly greater depth than actually true
when diving in salt water, depending on the salinity of
the water.
III
4.4 Maximum depth
Maximum depth is only displayed if it exceeds the current depth by more than
1 m (3 feet) (maximum indicator function).
Set maximum depth reached
The maximum depth set with SmartTrak has been
reached (default 40 m / 130 feet). Ascend until
the ascent arrow disappears.
4.5 Ascent rate
Optimal ascent rate varies depending on depth between 7 and 20 m/min (23
and 67 ft/min). It is displayed as a percent of the reference variable ascent rate.
If the ascent rate is greater than 100% of the set value, the black arrow
<SLOW> appears. If the ascent rate exceeds 140%, the arrow starts flashing.
The Smart provides an acoustic alarm if the ascent rate is 110% or greater. The
intensity of the alarm increases in direct proportion to the degree that the pre-
scribed ascent rate is exceeded.
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