Sainlogic SC089 User Manual page 36

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 CHANNEL/+ 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 CHANNEL/+ or MAX/MIN/- key for three
seconds to increase or decrease rapidly.
Press the ALARM key to reset current value.
Discussion: The rain collector is calibrated at the factory
based on the funnel diameter. The bucket tips every 0.01" of
rain (referred to as resolution). The accumulated rainfall can
be compared to a sight glass rain gauge with an aperture of at
least 4".
Note: that debris and insects can collect inside the tipping
mechanism (they make a good spiders nest). Carefully remove
the funnel and inspect the tipping mechanism for debris prior
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