La Crosse Technology WS-9020U 915MHZ Weather Radio User Manual


 
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Note:
After initial set up of the intelligent weather station with the setting of the
relative value, readings for weather forecasts should be disregarded for
the next 12-24 hours. This will allow sufficient time for the intelligent
weather station to collect air pressure data at a constant altitude and
therefore result in a more accurate forecast.
If the intelligent weather station is moved to another location
significantly higher or lower than its initial standing point (for example
from the ground floor to the upper floors of a house), set again the
relative air pressure value, and discard the weather forecast for the next
12-24 hours. By doing this, the intelligent weather station will not
mistake the new location as being a possible change in air-pressure
when really it is due to the slight change of altitude.
AIR PRESSURE TENDENCY INDICATOR
The air pressure tendency indicators are located on the left side of the
air pressure display, below the weather icons, and they work
independently from the weather forecast icons. The air pressure
tendency indicator pointing upward or downward directions is displayed
based on comparing the difference of the air pressure recorded during a
full hour time frame.
Note:
An upward air pressure tendency indicator means that there is an
increase in air pressure within the past 4 hours.
A downward air pressure tendency indicator means that there is
an decrease in air pressure within the past 4 hours.
AIR PRESSURE
The fifth section of the LCD shows the relative air pressure and the air
pressure history.
A
i
r
pressure over the last 12 hours
A
ir pressure
changes in hPa