Specifications
56
EMERGENCY DECOMPRESSION
The 500AI is a sophisticated instrument designed with capabilities that go be-
yond the range of recreational diving with compressed air. It will help you to
avoid and, if necessary, manage decompression.
NOTE: See pages 70 and 71 for additional safety information.
NITROGEN BAR GRAPH
The Nitrogen Bar Graph offers you a convenient way to consistently monitor
how close you are coming to the No Decompression Limit. As you use the
500AI and become familiar with the Nitrogen Bar Graph, you will notice that
it displays fewer segments for shorter dive times and shallower depths. Use
this feature to adjust conservatism to your diving needs.
CAUTION: Use the yellow Caution Zone (Fig. 62a) as a visual
reference to place a wider margin of protection between you
and the No Decompression Limit.
AERIS suggests keeping the Nitrogen Bar Graph in the green No De-
compression (NO DECO) zone during all of your dives, and that it al-
ways be in the 'green' when leaving the water.
Fig. 62 - Caution Zone
a
FT
MAX
FT
0
70
140
210
280
350
5000
4000
3000
2000
1000
0










