3.4.5 Calibration Mode
While in Calibration mode, press RAIN1/+ or
RAIN2/- buttons can change the calibration
coefficient (range: 0.1-5.0; default: 1.00). Hold the
button for 2 seconds can change rapidly.
Before you calibrate the coefficient, please read the
following first:
Rain Gauge Accuracy Cross Check
To tell if the rain gauge is accurate or not, it is not
correct to compare to a rain meter nearby around.
Because it is not necessary having a same rain
intensity, even they are not far from each other. To
judge if your rain meter is correct or not, you may do
the following:
1. Use a narrowed neck bottle that can sit under the
rain gauge water outlet holes. Collect the water
during a rain event and measure its weight. E.g.
353 g.
2. 353 g equals 353 ml, divided by rain collector
size of 250 cm2, you get 353/250 = 1.412 cm =
14.1 mm.
3. Compare the rain readings from your console to
your local rain event reading, or a reading from a
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