tion about your dive and prompts you with safety stop information and warnings, if needed. When diving, there are two
screens you can toggle between, and you can switch to dierent gas mixes, when needed.
Primary Underwater Screen
The primary underwater screen in DIVE mode displays your depth, remaining no-decompression time, dive time, max
depth, mix P02, 02 percentage, mix number, and OLI (oxygen limit
indicator) and PGT (pressure gas in tissue) bar graphs, which are
graphic representations of your “CNS clock”.
1. Depth – This is your current depth.
2. Maximum Depth – This is the maximum depth you have
reached during your dive.
3. P02 – This is the partial pressure of 02 at your current depth.
It is based on the F02 settings for the mix selected.
4. 02 (OLI) Bar Graph – This is the oxygen limit index (OLI)
that calculates the cumulative eect of your exposure to
elevated partial pressures of oxygen (P02). This bar
graph can display up to nine bars. If all bars are displayed,
it means that you have used 100 percent of your “CNS”
clock triggering a visual warning. This graph increases when
you descend due to higher partial pressures and may decrease
when you ascend.
VISUAL WARNING
Oxygen Limit Index (OLI) Warning
The OLI warning accounts for the intensity and length of your exposure to partial pressures of oxygen. When 7 of the OLI
bars are displayed, the OLI graph ashes as a warning to ascend to a shallower depth. If you fail to heed this warning and
all 9 of the bars are displayed, the graph continues to ash until you ascend to a shallower depth and the graph drops to
seven bars.
5. Dive Time – This is the time spent (in minutes and seconds) underwater, measured from the time you descended
below 5 feet (1.5 meters).
6. Remaining No-Decompression Limit (NDL) – This is the time that is remaining (in minutes) before you reach the
no-decompression limit. This NDL time limit increases as you ascend and decreases as you descend.
7. Mix Number – This is the mix number for which the computer is currently calculating dive data.
8. 02 Percentage – This is the oxygen percentage programmed for the mix number that is displayed.
9. PGT Bar Graph – This is how much nitrogen the computer calculates your body has absorbed. There are a
maximum of 9 bars. If all 9 bars are displayed, it means that you are at or have exceeded the no-decompression
limit triggering a visual warning.
VISUAL INDICATOR
Pressure Gas in Tissue (PGT) Limit Indicator
The PGT limit indicator alerts you to the fact that you are approaching or have approached the no-decompression limit.
When 7 of the 9 bars are displayed, the PGT graph ashes to indicate that you must ascend to a shallower depth to avert a
decompression obligation. If all nine bars are displayed, the NiTek Q will change to the decompression mode.
When Diving
Do not “push” the no-decompression limits (NDL’s). Make safety stops before ascending. If you exceed the no-decom-
pression limits, check your breathing gas supply at all decompression stop depths.
14
CO8000 NiTek Q
www.DiveRite.com
DIVE MODE
Primary Underwater Screen
PGT
Bar
OLI
Bar
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