Tusa Element II, Owner'S Manual

Page: 55 / 116

55
M A
S
M A
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OXYGEN ACCUMULATION
If FO2 was set for a numerical value (Nitrox), the O2BG (Fig.
50a) will add segments to represent oxygen accumulation for
that dive, or 24 hour period, whichever amount is greater.
If O2 reaches 100% of the allowed limit (300 OTU), the graphic
O2 will replace NDC. High O2 is described later.
ASCENT RATE INDICATOR (ASC)
The ASC shows how fast you are ascending. When you exceed
the maximum recommended Ascent Rate for the depth you are at
(see chart on page 17), all segments of the ASC will flash (Fig.
51) and the graphic SLO will flash (Fig. 51a), replacing NDC
time (or GAU graphic). The flashing will stop and NDC time (or
GAU graphic) restored when the audible is silenced or your
Ascent Rate is slowed below the alarm value.
The Ascent Rate alarm is based upon 2 sets of speeds which
change at a reference depth of 60 FT (18 M).
WARNING: At depths greater than 60 FT (18 M),
Ascent Rates should not exceed 60 FPM (18
MPM). At depths of 60 FT (18 M) and shallower,
Rates should not exceed 30 FPM (9 MPM).
Fig. 50 - O2BG
a
a
Fig. 51 - ASC