Suunto SS020392000 Scuba Diving Equipment User Manual


 
3.22 Tank pressure
When using the optional Suunto Wireless Transmitter, the pressure
of your tank is shown in the lower left of the display.
Whenever you start a dive, the remaining air time calculation
begins. After 30-60 seconds, the first estimation of remaining air
time is shown in the left center of the display.
The calculation is always based on the actual pressure drop in your
tank and automatically adapts to your tank size and current air
consumption.
The change in your air consumption is based on constant one
second interval pressure measurements over periods of 30–60
seconds. An increase in air consumption decreases the remaining air
time rapidly, while a drop in air consumption increases the air time
slowly. In this way, an overly optimistic air time estimate, caused by
a temporary drop in air consumption, is avoided.
The remaining air time calculation includes a 35 bar (500 psi) safety
reserve. This means that when the instrument shows the air time to
be zero, there is still a small reserve.
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