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LUNA 2.0 AI USER MANUAL
2.1.2.6 Enabling predictive multi-gas mode (PMG)
Predictive multi-gas (PMG) mode enables the use of multiple tanks (up to 3 tanks).
See chapter Diving with multiple gas mixtures to learn more about how to use this feature.
2 .1 .3 Apnea mode settings
A series of APNEA related settings are grouped in this menu.
2.1.3.1 Total Apnea exercise depth
To provide a scale of total pressure changes during an APNEA dive session, the LUNA 2.0 AI includes a total depth
counter. Using the pushbuttons you can set the total depth counter from 100m/300ft to 1000m/3301ft. When your
depth total has been reached the LUNA 2.0 AI noties you at the surface with an audible tone and a blinking “no
dive” symbol to let you know it is time to end the session and take a break.
2.1.3.2 Surface Interval Factor (SIF)
APNEA diving organizations provide various recommendations regarding surface intervals between dives based on
dive times or depths. The LUNA 2.0 AI integrates a surface interval counter which employs simple multiplication for
determining the surface interval in seconds. The LUNA 2.0 AI uses the following formula to make this calculation:
Surface interval before the next dive = pressure (depth) * square root of dive time * SIF.
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