can be measured by the piezoelectric rain gauge, but the raindrops
landing may have two impacts on the monitoring panel so that the
measured rainfall value is larger; for minimal rainfall intensity, due
to the vertical momentum is too small, so that the measured rainfall
value is small. Therefore, it is necessary to calibrate the
piezoelectric sensors for different rainfall intensities depending on
the environment in which they are located.
WS90 and WS85 are weather stations equipped with piezoelectric
rain gauges. To make your rain data more accurate, you can
calibrate the rain sensor accuracy by yourself:
1. A reference is needed to record the rainfall value, and it is also
important to be able to record the rain rate. Our WH40 rain sensor
can be used for this purpose.
2. You can set five rain gain parameters: Piezo Rain1: Rain5. We
usually leave Rain1 as it is unless you can confirm it consistently
produces the same result, and then you can adjust this.
3. Please ensure that you record rain data as follows: set rain4 gain to
6/7.5, which equals 0.8. For easier management, set rain2, rain3, and
rain5 all to 0.8 for now. Only when different rain rates are recorded,
divide the ws90 rain by 0.8 to get 1.0 rain, and then recalculate
(reference/ws90/0.8) to precisely adjust the corresponding rain gain
setting.
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