DAVIS Rain Collector II for GroWeather, EnviroMonitor, Weather Monitor and Wizard - Manual (Page 4)

Rainfall Calibration Number
4
5. Slide the magnet, with the exposed end of the magnet first, into the open slot
of the metric measurement adapter.
Separate magnet from one end cap
Insert magnet with other end cap into metric measurement
adapter
6. Insert the metric measurement adapter between the arms of the tipping
bucket, with solid side of the metric measurement facing up.
Open plastic arms to insert metric measurement adapter,
with adapter in “V” position
Although the rain collector is now ready to take accurate metric
measurements, the console does not register the rain collector measurement
weight has changed. The rain measurement type must be changed on the
console.
Rainfall Calibration Number
Each station uses a rainfall calibration number (CAL) to determine how much
water each bucket tip (i.e., pulse) represents.
Calibrated Rainfall = Number of pulses x (1/CAL)
The default rainfall CAL of 100 works for the 0.01" rain collector. If you have a
0.01" rain collector you do not need to adjust CAL at all.