73
ReACT Pro
FT
A
S
NITROXNITROX
OTL
As oxygen accumulation increases during a nitrox dive, DTR decreases before reaching the O2
saturation limit for that dive, or 24 hour period.
When O2 time becomes less than the NDL, calculations for the current depth will be controlled by
oxygen. Oxygen Time Remaining will then appear as DTR with the OTL icon (Fig. 78a).
ALTITUDE
Atmospheric pressure decreases as Altitude increases above sea level. Weather systems and am-
bient temperature also affect barometric pressures. Consequently, depth reading instruments that
do not compensate for the decrease in ambient pressure indicate depth readings shallower than the
depth they are actually at. The ReACT Pro automatically compensates for decreased ambient
pressures for Altitudes between 3,001 feet (916 meters) and 14,000 feet (4,270 meters). It's program reduces No Deco and O2
limits to add a larger zone of caution.
The ReACT Pro senses ambient pressure when it is manually activated, every 15 minutes while it is activated, or every 30 min-
utes when it is not activated. Beginning at 3,001 feet (916 meters), then at additional intervals of 1,000 feet (305 meters), it
will automatically recalibrate depth measurements and the No Deco and O2 limits. When returning to lower Altitudes, diving
should not be conducted until the unit automatically clears of any residual nitrogen and oxygen loading and resets to operate at
the new lower Altitude.
WARNING: Diving at high altitude requires special knowledge of the variations imposed upon
divers, their activities, and their equipment by the decrease in atmospheric pressures. Genesis
Scuba recommends completion of a specialized Altitude training course by a recognized training
agency prior to diving in high altitude lakes or rivers.
Fig. 78 - OTL as DTR
a
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