2. A reference will be needed to record the rainfall
value, and also it is quite important to have the
ability to record the rain rate. For this, our WH40
rain sensor can be used for this purpose.
3. There are five rain gain parameters you can set:
Piezo Rain1: Rain5. So we leave Rain1 as it is
unless you can confirm it made constantly same
result, and then you can adjust this.
4. Have rain data recorded, like this: we set rain4 gain
to 6/7.5 = 0.8. For easier handling, you can set
rain2:rain3:rain5 all the 0.8 for the time being. Only
when different rain rates are recorded, you have the
WS90 rain divided by 0.8 to get 1.0 rain, and then
have the (reference/WS90/0.8) calculated again,
and fill up the corresponding rain gain setting
precisely.
Figure 9: Rainfall values recorded for WH40 and
WS90
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