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19 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 alti-
tude increases. Meteorologists 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.
To obtain a generally valid air pressure, this is converted to sea level, which is then the generally
known barometric air pressure.
• Press the DOWN button to change the unit from mb/hPa (millibar/hectopascal) to InHg (Inch of
mercury).
NOTE
1. The built-in barometer can notice the environmental absolute atmospheric pressure changes.
Based on the collected data a forecast for the weather conditions in the next 12 hours can be
made. For this purpose, the weather indicators change according to the determined absolute air
pressure after just one hour of operation.
2. High air pressure is always associated with good weather, while low air pressure indicates rainy
weather.
20 Set Time Zone
To set a different time zone, proceed as follows:
1. Press and hold MODE button for approx. 3 seconds to change to time setting mode.
2. Press the MODE button multiple times until the display shows the time offset 00 Hr.
3. Press UP or DOWN button to select the desired time deviation in hours (-12 up to +12 hours).
4. Finally press the MODE button to save the settings and exit the setting mode.
21 Technical data
Base station
Batteries
3x AA, 1.5 V
Radio controlled signal
DCF
Maximum number of sensors
3
Temperature unit
°C / °F
Temperature measuring range
-0°C – 50°C
Humidity measuring range
20% to 90% RH
Humidity resolution
1% HR
Barometer measuring range
800 hPa to 1100 hPa (23.62 inHg to 32.49 inHg
Time display
HH:MM
Time format
12 or 24 hours
Dimensions
165 x 130 x 30 mm (W x H x D)
Weight
268 g (without batteries) 336 g (with batteries)
Remote sensor
Batteries
2x AAA, 1.5V
Transmission frequency
433 MHz
Transmission measuring range
30 m
