22
DD-MM format)
- Press the
SET
key seventh time to select year.
- Press the
SET
key eighth time to select month.
- Press the
SET
key ninth time to select day.
Note: Press the
WIND/+
or
PRSSURE/-
key to set the value.
Note: If user to change minute value, second will auto clear to 0.
6.4.4
Pressure
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 72
hour pressure average.
4)
Relative Pressure Calibration Discussion
To compare pressure conditions from one location to another, meteorologists
