Uwatec Chromis Technical Information download pdf (Page 56)

SCUBAPRO MERIDIAN

7. Glossary

7. GLOSSARY

AVG: Average depth, calculated from the beginning of the dive or from the

time of reset.

CNS O

: 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 1, Gas d: Refers to the main gas (1) and the decompression gas (d) when using

the multi gas option of the ZH-L8 ADT MB PMG algorithm.

Local time: the time in the local time zone.

Max depth: Maximum depth attained 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

) reaches the maximum allowed level

(ppO

max). Diving deeper than the MOD will expose the diver to unsafe

ppO

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.

: Oxygen.

: Oxygen concentration used by the dive computer in all calculations.

PDIS: Proﬁle Dependent Intermediate Stop is an additional deep stop which

is suggested by Meridian at depth where 3rd, 4th or 5th compartment

starts off gassing.

PMG: Predictive Multi Gas, refers to the algorithm capable of including up to

two different Nitrox mixes in its decompression calculations.

ppO

: 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

higher than 1.6bar is considered dangerous.

ppO

max: The maximum allowed value for ppO

. Together with the oxygen

concentration it deﬁnes the MOD.

Press: The act of pressing and releasing one of the buttons.

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