Oceanic VT 3, Operating Manual

Page: 82 / 164

82
You should immediately initiate a controlled Ascent while monitoring your Tank Pressure.
However, there is no reason to panic, the VT3 has allowed for the Air necessary for a safe
Ascent including the No Deco Safety Stop, if set On, and any Decompression Stops
required.
Example:
• You set the End Pressure Alarm for 300 PSI (20 BAR)
• You are at a Depth of 60 FT (20 M)
• Air Time Remaining decreases to 0:00
• You Ascend at a maximum rate of 30 FPM (10 MPM)
• You surface with 300 PSI (20 BAR) pressure still in your Tank
ASCENT RATE ALARM
Alarms associated with Ascent Rate are based upon 2 sets of
speeds which change at a reference depth of 60 FT (18 M).
WARNING: At depths greater than 60 FT (18 M),
Ascent Rates should not exceed 60 FPM (18 MPM).
At depths of 60 FT (18 M) and shallower, Rates
should not exceed 30 FPM (9 MPM).
The Audible will sound, the red LED will flash, and the message
SLOW > SLOW will scroll on/off at the top of the screen (Fig.
67). The Audible and LED will stop when acknowledged with
the A button or when the Ascent is slowed. The message will
continue to scroll until Ascent is slowed.
Fig. 67 - Ascent Rate Alarm