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to represent readings your their area (see Basic Programming
Modes below).
Weather Data (LCD Section 2)
Indoor temperature and humidity are displayed simultaneously in
this section. Use the DISPLAY key to toggle through the displays
for other weather information:
- Outdoor temperature/humidity
- Outdoor wind chill
- Outdoor dew point
- Rainfall 24h
- Rainfall 1h
- Rainfall total.
Notes to Dewpoint and Windchill:
Air can at a certain temperature only carry a certain amount of
water (water vapor), which also increases and decreases with tem-
perature. If the air temperature decreases below the so called dew-
point (saturation point), the excessive water vapor will condense
and fall out in form of dew, fog or rain. At a temperature of e.g.
15°C and a relative humidity of 50% the dewpoint wi ll be about 5°C,
at 80% humidity about 12°C. At a relative humidity of 100% satura-
tion is reached, i.e. the dewpoint is 15°C. At a dew point below
freezing the fallout will become frost or snow.
Windchill has been introduced for battle planning during World War
II. It represents not the real measured but the one temperature a
person feels in open area under the influence of wind and cold.
Windchill is laid out in tables for various temperatures and wind
speeds. At an outdoor temperature of e.g. 8°C and c alm winds a
person moving at a speed of 6 m/s will already feel a windchill tem-
perature of 0°C.
Wind Data (LCD Section 3)
The current wind direction will be displayed on the LCD compass
on the wind section. Press the WIND key to toggle between wind
direction as numerical (e.g. 225°) and abbreviated characters (e.g.
