Specifications

67
500AI
When PO2 reaches a value of 1.60 ATA, the Audible Alarm will emit a double
beep then one beep per second* as a warning until the level of PO2 decreases
below 1.60 ATA. Also, the large red segment of the O2 bar graph, the PO2
value, and PO2 symbol will flash continuously (Fig. 76).
*If the Audible Alarm feature was set to OFF, only a double beep.
WARNING: In the event that you enter High PO2 Dive Mode,
you must immediately focus on reducing the partial pressure of
oxygen by slowly ascending to a shallower depth at a safe rate
in accordance with your nitrox training. If you continue the
dive at your current depth, or descend deeper, your exposure to
CNS oxygen toxicity will increase.
HIGH OXYGEN ACCUMULATION
It is important that you understand that conducting repetitive dives using en-
riched nitrogen-oxygen (nitrox) mixtures can lead to oxygen buildup, reducing
oxygen tolerance while increasing the risk of pulmonary oxygen toxicity.
AERIS strongly recommends that you avoid exceeding oxygen expo-
sure limits, and reminds you that nitrox diving requires special train-
ing and understanding of the effects of oxygen toxicity.
Fig. 76 - High PO2 Alarm
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