Specifications

41
500AI
Dive Mode Bar Graphs (Fig. 42)
As your depth and/or elapsed dive time increase, the Nitrogen Bar Graph will
fill with segments (green toward red) to represent the absorption of nitrogen;
and if FO2 was set for a value other than 'Air', the O2 Bar Graph will fill with
segments (green toward red) to represent oxygen accumulation for that dive,
or 24 hour period, whichever is greater.
The Tank Pressure Bar Graph will recede from green toward red as breathing
gas is consumed. Segments of the Ascent Rate Indicator will fill (and recede)
as your ascent rate increases (and decreases) throughout the dive.
WARNING: Every effort should be made to keep all of the bar
graphs in the green throughout your dives to reduce your risk
of exposure to decompression sickness and oxygen toxicity.
ENTERING DECOMPRESSION DIVE MODE
The 500AI provides information that will help you avoid or, if necessary, man-
age emergency decompression.
The Decompression Dive Mode activates when the No Decompression Limits
are exceeded and the Nitrogen Bar Graph enters the red decompression zone
(Fig. 43a). Decompression Dive Mode is described on page 57.
Fig. 43 - Decompression
Dive Mode
Fig. 42 - Bar Graphs
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