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-Press the
SET
key tenth to select the ABS pressure unit, pressure value
and hPa digits will start flashing, press the
WIND/+
or
PRESSURE/-
key to
select unit (hPa, inhg,mmhg)
-Press the
SET
key eleventh to select the REL pressure unit, pressure
value and hPa digits will start flashing, press the
WIND/+
or
PRESSURE/-
key to select unit (hPa, inhg,mmhg)
1)
Viewing Absolute vs. Relative Pressure
To switch between absolute and relative pressure, press and hold the
[PRESSURE -] button for two seconds.
Absolute pressure is the measured atmospheric pressure, and is a function
of altitude, and to a lesser extent, changes in weather conditions.
Absolute pressure is not corrected to sea-level conditions.
Relative pressure is corrected to sea-level conditions.
2)
Rate of Change of Pressure Graph
The rate of change of pressure graphic is shown to the left of the barometric
pressure and signifies the difference between the daily average pressure
and the 30 day average (in hPa).
3)
Viewing Pressure History
Press the [PRESSURE -] button to view the 12 hour, 24 hour, 48 hour and
