Specifications

The ATMOS

senses ambient pressure when it is activated, every 15 minutes while it is activated,

or every 30 minutes when it is not activated. At an Altitude of 2,000 feet (610 meters), it will auto-

matically recalibrate itself to measure depth in feet of fresh water rather than feet of sea water. It will

then readjust the no decompression and oxygen limits at additional intervals of 1,000 feet (305

meters). Therefore, when returning to lower Altitudes, diving should not be conducted until the unit

automatically clears of any residual nitrogen and oxygen loading and resets to operate at the new

lower Altitude.

WARNING: The ATMOS

will not sense ambient pressures or provide Alti-

tude compensation when it is wet. DO NOT dive at any different Altitude until

the unit shuts off and is reactivated at the new Altitude.

If the unit is activated at elevations higher than 14,000 feet (4,267 meters), it

will perform a diagnostic check followed by immediate shutdown.

FLYING AFTER DIVING

In 1990 the Undersea and Hyperbaric Medical Society (UHMS) published a set of guidelines aimed

at minimizing the possibility of decompression sickness due to flying too soon after diving. The

UHMS suggests* divers using standard air cylinders and exhibiting no symptoms of decompression

sickness wait 24 hours after their last dive to fly in aircraft with cabin pressures up to 8,000 feet.

(2,440 meters). The two exceptions to this recommendation are:

 If a diver had less than 2 hours total accumulated dive time in the last 48 hours, then a 12 hour

surface interval before flying is recommended.

 Following any dive that required a decompression stop, flying should be delayed for at least 24

hours, and if possible, for 48 hours.

* excerpted from The UHMS Flying After Diving Workshop