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English
CHROMIS USER MANUAL
7. GLOSSARY
AVG: Average depth, calculated from the beginning of the dive or from the
time of reset.
CNS O
2
: Central Nervous System oxygen toxicity.
DESAT: Desaturation time. The time needed for the body to completely eliminate
any nitrogen taken up during diving.
Dive time: The time spent below a depth of 0.8m/3ft.
Gas: Refers to the main gas that is set for the ZH-L8 ADT MB algorithm.
Local time: the time in the local time zone.
Max depth: Maximum depth reached during the dive.
MB: Microbubble. Microbubbles are tiny bubbles that can build up in a
diver’s body during and after a dive.
MB level: One of the six steps, or levels, in SCUBAPRO’s customizable algorithm.
MOD: Maximum Operating Depth. This is the depth at which the partial
pressure of oxygen (ppO
2
) reaches the maximum allowed level
(ppO
2
max). Diving deeper than the MOD will expose the diver to unsafe
ppO
2
levels.
Multi gas: Refers to a dive in which more than one breathing gas is used (air and/
or Nitrox).
Nitrox: A breathing mix made of oxygen and nitrogen, with the oxygen
concentration being 22% or higher. In this manual, air is considered as
a particular type of Nitrox.
NO FLY: Minimum amount of time the diver should wait before taking a plane.
No-stop time: This is the time that a diver can stay at the current depth and still
make a direct ascent to the surface without having to perform
decompression stops.
O
2
: Oxygen.
%O
2
: Oxygen concentration used by the dive computer in all calculations.
PDIS: Profi le Dependent Intermediate Stop is an additional deep stop which
is suggested by Chromis at depth where 3rd, 4th or 5th compartment
starts off gassing.
ppO
2
: Partial pressure of oxygen. This is the pressure of the oxygen in the
breathing mix. It is a function of depth and oxygen concentration. A
ppO
2
higher than 1.6bar is considered dangerous.
ppO
2
max: The maximum allowed value for ppO
2
. Together with the oxygen
concentration it defi nes the MOD.
Press: The act of pressing and releasing one of the buttons.
Press and
hold:
The act of pressing and holding one of the buttons for 1 second before
releasing it.
INT.: Surface interval. Elapsed time since your last dive has ended.
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