Dive Time Remaining; No Decompression Dive Time Remaining - Oceanic DATA PLUS Owner's Manual

DIVE TIME REMAINING

One of the most important pieces of information on the Data Plus 2 is the pat-
ented Dive Time Remaining numeric display. To numerically display Dive Time
Remaining, the Data Plus 2 constantly monitors two critical pieces of informa-
tion; no decompression status and oxygen accumulation status. The Dive Time
Remaining display will indicate the time that is more critical for you at that par-
ticular moment (i.e.; whichever time is the least amount available of the two).
The time being displayed is identified by the No Decompression Dive Time icon
(Fig. 7a), or the O2 Time icon (Fig. 8a). This unique feature has been granted
U.S. Patent No. 4,586,136.

No Decompression Dive Time Remaining

No Decompression Dive Time Remaining is the maximum amount of time that
you can stay at your present depth before entering a decompression situation.
It is calculated based on the amount of nitrogen absorbed by twelve hypotheti-
cal tissue compartments. The rates each of these compartments absorb and re-
lease nitrogen is mathematically modeled and compared against a maximum al-
lowable nitrogen level. Whichever one of the twelve is closest to this maximum
level is the controlling compartment for that depth. Its resulting value will be
displayed numerically (Fig. 7b) along with the No Decompression Dive icon and
graphically as the Tissue Loading Bar Graph.
Data Plus 2
FT
FT
MAX
Fig. 7 - Dive Time Remaining
(No Deco Time is Less)
FT
FT
MAX
O
2
Fig. 8 - Dive Time Remaining
(O2 Accum Time is Less)
a
b
a
7