7
4 6 8 10 12 14 16 18 20
0
20
40
60
80
T
ime in Mi
nutes
Loop Current in mA
An output of 8 mA indicates a
20 minute time period in rain
detector mode.
Figure 8
Rain Detector Mode Transfer Function
Figure 9
Rain Detector Timer Calibration
4
Current
12
8
mA
20
16
Loop
Bucket Tips
Time in Minutes
20 40 60 80 100
120 140
0
20 min.
20 min.
20 min.
