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AIR PRESSURE HISTORY (ELECTRONIC BAROMETER WITH BAROMETRIC PRESSURE
TREND)
The right side of the second section of the LCD shows the air pressure history bar graph.
The bar graph indicates the air pressure history trend over the last 12 hours in 5 intervals: 0h, -3h, -6h, -9h
and -12h. The “0h” represents the current full hour air pressure recording. The columns represent the “hPa”
(0, ±1, ±3, ±5) at specific time. The “0” in the middle of this scale is equal to the current pressure and each
change (±1, ±3, ±5) represents how high or low in “hPa“ the past pressure was compared to the current
pressure.
If the bars are rising it means that the weather is getting better due to the increase of air pressure. If the bars
go down, it means the air pressure has dropped and the weather is expected to get worse from the present
time “0h“.
Note:
For accurate barometric pressure trends, the weather station should operate at the same altitude for
recordings (i.e. it should not be moved from the ground to the second floor of the house). When the unit is
moved to a new location, discard readings for the next 12 hours.
ABSOLUTE/RELATIVE AIR PRESSURE
Press the SET button to toggle between relative (“
rel
”) and absolute (“
abs
”) air pressure displays.
Note:
Absolute pressure is the actual atmospheric pressure measured by the main unit. Relative pressure is
referred as sea level’s pressure and has to be adjusted first to your local altitude (see “
Relative air
pressure reference value setting).
INDOOR TEMPERATURE/HUMIDITY DATA
The indoor temperature and humidity data are automatically updated and displayed on the first section of
the LCD.
Air pressure trend over
the last 12 hours
Indoor
temperature
in ºC
Indoor relative
humidity in RH%
Absolute air pressure display
