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4 Functions during the dive
UWATEC
®
Smart dive computers
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 decompres
-
sion prognosis determined, ascent rate controlled and displayed and the correctness of the decompression
procedure supervised. In addition, Smart Z also shows the tank pressure and about 2 minutes into the dive
the Remaining Bottom Time (RBT) is displayed.
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 if the
diver descends again below 0.8m (3 feet) within 5 minutes.
While the dive time is running, the colons on the right of the figures are
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). At a diving
depth of less than 0.8 m (3 ft) the display shows "– – –".
Depth measurement is based on freshwater. Therefore,
Smart Z shows a slightly greater depth when diving in
salt water, depending on the salinity of the water. No
calculation however is affected.
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English
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
If the maximum depth set with SmartTRAK has
been reached (default 40m/130 feet), the current
depth will flash and the ascent arrow will be
displayed.
Ascend until the ascent arrow disappears.
4.5 Temperature
Smart Z permanently displays the temperature, under water and on the sur-
face as long as the computer is turned on.
4.6 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.
Smart Z provides an audible alarm if the ascent rate is 110% or greater. The
intensity of the alarm increases in direct proportion to the degree that the
prescribed ascent rate is exceeded.
