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Discussion
: Wind speed and wind gust are adversely
affected by installation constraints. The rule of thumb is to
install the weather station four times the distance of the height
of the tallest obstruction (for example, a 6 m house would
require an installation 24 m away).
In many instances, due to trees and other obstructions, this is
not possible. The wind speed calibration allows you to correct
for these obstructions.
In addition to installation challenges, wind speed bearings (any
moving part) wears over time. To correct for wear, the
correction value can be increased until the wind cups must be
replaced.
Without a calibrated source, wind speed is a difficult parameter
to measure. We recommend using a calibrated wind meter and
constant, high speed fan.
Rain Calibration
In the calibration mode, press the
SET
button again and the
rain value will flash (the default is 1.00).
Press the
C
key or
MAX/MIN/-
key to adjust the
rain calibration factor from 0.75 to 1.25, where:
Calibrated Rain = Calibration factor x Measured Rain
Press and hold the
C
or
MAX/MIN/-
key for three
seconds to increase or decrease rapidly.
