Design Aeris, Справочное руководство

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This is a feature of the decompression model that is the basis for multilevel diving, one of
the most important advantages that AERIS dive computers offer.
Oxygen Time Remaining (OTR)
Oxygen accumulation (exposure) during a dive, or 24 hour period, appears graphically
as the O2 Bar Graph (O2BG) or numerically as %O2. As time remaining before reach-
ing the oxygen exposure limit decreases, segments are added to the O2BG or %O2
increases.
When OTR becomes less than the NDC, and/or Air Time Remaining, calculations for that
depth will be controlled by oxygen. OTR will then appear as the DTR display.
As oxygen accumulation continues to increase, the O2BG will enter the Caution Zone.
Air Time Remaining (ATR)
- integrated model dive computers only
ATR is the time you can remain at your present depth and still surface with the tank pres-
sure reserve (End Gas Alarm Set Point) that you set prior to the dive.
ATR is calculated using a patented algorithm that is based on the diver's individual air
consumption rate and depth. Tank pressure is measured once each second and an aver-
age rate of consumption is calculated over a 90 second period. This rate of consumption
is then used in conjunction with a knowledge of the depth dependence to predict the air
required for a safe ascent including any required decompression stops.
(continued on page 18)