Safe Minutes (Dive Time Remaining); No Decompression; O2 (Oxygen Time Remaining) - Sherwood Scuba SAGE Manual

SAFE MINUTES (DIVE TIME REMAINING)

The Sage constantly monitors No Decompression status, O2 Accumulation, Air Time Remaining, and it will display whichever time is the least amount
available as Safe Minutes on the No Decompression Dive Main screen. Times other than No Decompression will be identified further with an O
ATR (Air Time Remaining) icon.

NO DECOMPRESSION

No Decompression is the maximum amount of time that you can stay at your present depth before entering decompression. It is calculated based on
the amount of nitrogen absorbed by hypothetical tissue compartments. The rates each of these compartments absorb and release nitrogen is math-
ematically modeled and compared against a maximum allowable nitrogen level.
Whichever compartment is closest to this maximum level is the controlling compartment for that depth. Its resulting value will be displayed simply as
Safe Minutes. It will also be displayed graphically as the N2 Bar Graph, see Bar Graphs later in this section.
As you ascend, the N2 Bar Graph will recede as control shifts to slower compartments. This is a feature of the decompression model that is the basis
for multilevel diving, one of the most important advantages that Sherwood dive computers offer.
SAFE MINUTES
26
87
DIVE TIME
0:43
FT
2349
GAS 1
NX 32
PSI

O2 (OXYGEN TIME REMAINING)

When set for nitrox operation, O2 SAT (Oxygen Saturation) and O
Saturation) is displayed as a percentage of allowed saturation identified by the O2 SAT graphic. The limit for O2 SAT (100%) is set at 300 OTU
(Oxygen Tolerance Units) per dive or 24 hour period. See the chart at the back of this manual for specific times and allowances. O2 SAT and O
SAFE MINUTES are inversely related; as the O2 SAT value increases the O
When the O SAFE MINUTES value becomes less than the No Decompression calculations for the dive, SAFE MINUTES (Dive Time Remaining) will
2
be controlled by O2 SAT and the O
DIVE ALT 2
SAFE MINUTES
58
O
2
02 SAT PO2
27% 0.71
32%
FO2
© Pelagic, 2017
the value is
No Decompression Time
SAFE MINUTES value will be displayed on the Dive Main screen, identified by the O
2
the value is
Oxygen Time Remaining
SAFE MINUTES will be displayed on the ALT 2 during a dive. O2 SAT (Oxygen
2
SAFE MINUTES value decreases.
2
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SAGE MANUAL
or
2
2
icon.
2
Doc. No. 12-7864-r06 (8/21/17)