41
Datamax Pro Plus
20
0 5
10
30 40 50 60
NO DECO
C Z
DECO
C Z
O
2
PSI
FT
FT
MAX
The Variable Ascent Rate Indicator™ shows how fast you are ascending.
When you exceed the maximum recommended ascent rate of 60 feet per
minute (18 meters per minute), the bar graph will enter the red (Too Fast)
zone (Fig. 44a). You will be alerted by all segments of the bar graph flashing.
The flashing will stop when your ascent rate is slowed.
ALTITUDE DIVING
The mathematical model within the Pro Plus accounts for the reduced No De-
compression dive time available at higher elevations based on NOAA (National
Oceanic and Atmospheric Administration) guidelines. When diving in high
altitude lakes or rivers from 2,000 to 14,000 feet (610 to 4,268 meters), the Pro
Plus will adjust automatically, providing corrected depth and reduced No De-
compression and Oxygen Exposure times.
Also, when above 2,000 feet (610 meters), depth calibration is automatically
changed to read in feet of freshwater rather than feet of seawater. If activated
above 14,000 feet (4,268 meters), the unit will perform a diagnostic check and
shutdown.
Fig. 44 - Ascent 'Too Fast'
a
