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Idiomas disponibles
Idiomas disponibles
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Illustration 3: The weather trend indicators on the base station display
Meaning of the icons (from left to right):
sunny / partly cloudy / cloudy / rain / thunderstorm / snow
Weather frog
Illustration 4: The weather frog icon as weather trend indicator on the base station display
Meaning of the icons (from left to right):
summer temperatures, heat / comfortable temperatures / uncomfortable temperatures / winter temper-
atures, cold
18 Barometric / Atmospheric pressure
Atmospheric pressure (hereinafter referred to as "air pressure") is the pressure at any place on earth
caused by the weight of the layer of air above it. Air pressure is proportional to average pressure and
decreases gradually with altitude. Meteorologists use barometers to measure air pressure. Because
the weather is highly dependent on changes in air pressure, it is possible to make a weather forecast
from the measured changes in air pressure.
To obtain a generally valid air pressure, this is converted to sea level. This calculated value is then the
generally known barometric air pressure.
Find out the value of the air pressure above sea level (also corresponds to the relative air pressure of
your location) from the local weather service, the internet or other sources.
• In the normal display mode, press the HISTORY button to check the barometer reading for the last
12 hours.
• In normal mode, press and hold the HISTORY button to select the type of air pressure and press
the UP or DOWN buttons to select between absolute pressure and relative pressure.
• When entering the relative pressure mode, press the HISTORY button once to change the baro-
meter value. Press the UP or DOWN button to change the value.
NOTE
• The built-in barometer registers changes in absolute air pressure caused by the environment.
Based on the collected data, a forecast for the weather conditions in the next 12 hours can be
made. The weather indicators change according to the determined absolute air pressure after only
one hour of operation.
• High air pressure is always associated with nice weather, while low air pressure indicates rainy
weather.
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