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The temperature and humidity trend indicator shows the
trends of changes in the forthcoming few minutes. Arrows
indicate a rising, steady or falling trend.
18 Barometric / Atmospheric
Pressure
Atmospheric Pressure is the pressure at any location on
earth, caused by the weight of the column of air above it.
One atmospheric pressure refers to the average pressure
and gradually decreases as altitude increases. Meteorolo-
gists use barometers to measure atmospheric pressure.
Since variation in atmospheric pressure is greatly affected
by weather, it is possible to forecast the weather by measur-
ing the changes in pressure.
1.
When the alarm time or date is shown, press the BARO
button to show the barometric reading.
2.
Press the BARO button again, to change the unit
between inHg / mmHg / hPa.
3.
Press the BARO button for 3 seconds to enter atmo-
spheric pressure setting mode.
4.
Press the +/CHANNEL or -/MEM button to switch
between absolute and relative pressure:
• ABSOLUTE: the absolute atmospheric pressure of your
location.
• RELATIVE: the relative atmospheric pressure based on
the sea level.
Set relative atmospheric pressure value
