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When the amount of time remaining before reaching the Oxygen
Limit becomes less than the No Decompression Dive Time Re-
maining, calculations for that Depth will be controlled by Oxy-
gen. Oxygen Time Remaining will then appear as the Dive Time
Remaining display (Fig. 82a) as signified by the symbols O2 and
TIME. As Oxygen Accumulation continues to increase, segments
will add to the O2 Bar Graph.
Air Time Remaining
The ATOM
calculates Air Time Remaining using a patented
algorithm that is based on a diver's individual Air Consumption
Rate and Current Depth.
Tank Pressure is measured once each second and an average rate of Consumption is
calculated over a 60 second period. This Rate of Consumption is then used in conjunction
with a knowledge of the Depth dependence to predict the Air required for the diver to make
a safe controlled Ascent including any required Decompression Stops.
Air Consumption and Depth are continuously monitored and Air Time Remaining reflects
any change in circumstances. For example, when a buddy starts breathing from your
Octopus or you suddenly find yourself swimming against a strong current and begin breath-
ing more rapidly, the ATOM will recognize the change and adjust the Air Time Remaining
accordingly.
Air Time Remaining is the time you can remain at the present Depth and still safely surface
with the Tank Pressure Reserve that you selected during setup (End Pressure Alarm Setting).
Fig. 82 - O2 Time Remaining
a