Cylinder Pressure Data - Suunto Favor Air User Manual

- the available no-decompression time in minutes is shown as NO DEC TIME. It is
calculated based on the five factors listed in Section 6.1, "Operating Principles".
- your present depth is shown in meters [ft].
- the personal/altitude adjustment setting (A0, A1, or A2).
- the cylinder pressure and air time. Discussed in section 3.4.2.
In the lower left corner the following information will alternate:
- the elapsed dive time in minutes, shown as DIVE TIME, for 11 seconds.
- the maximum depth during this dive in meters [ft], indicated as MAX, for about 3
seconds.
- the water temperature, with C for Centigrade [or F for Fahrenheit], for about 2
seconds.

3.4.2 Cylinder Pressure Data

The air pressure of your scuba cylinder in bars [psi] will be shown digitally in the lower
right corner of the display. Anytime you enter into a dive, the remaining air time
calculation begins. After 30 - 60 seconds (sometimes more, depending on your air
consumption), the first estimation of remaining air time will be shown in the center
window of the display. The calculation is always based on the actual pressure drop in
your cylinder and will automatically adapt to your cylinder size and current air
consumption.
The change in your air consumption will be based on constant one second interval
pressure measurements over 30 - 60 second periods. An increase in air consumption
will influence the remaining air time rapidly, while a drop in air consumption will increase
the air time slowly. Thus a too optimistic air time estimation, caused by a temporary
drop in air consumption, is avoided.
The calculations of the remaining air time include a 35 bar [500 psi] safety buffer. This
means that when the FAVOR AIR shows the air time to be zero, there is still about 35
bar [500 psi] pressure left in your cylinder depending on your air consumption rate. With
a high consumption rate the limit will be close to 50 bar [725 PSI] and with a low rate
close to 35 bar [500 PSI].
NOTE : Filling your BC will affect the air time calculation, due to the temporary
increase in air consumption.
NOTE: A change of temperature will affect the cylinder pressure and
consequently the air time calculation.
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