Standard Setting - Davis Instruments Rain Collector II Installation Manual

Extending Cable Runs
To Clear Rainfall
Daily and total rainfall are independent of each other. You must clear each register
separately.
1. Press RAIN once or twice to select daily or total rainfall, as desired.
2. Press CLEAR and hold it down.
The display will flash several times and then the weather station clears rainfall.
Note: Performing a "total clear" on the weather station does not clear rainfall.
To Set Total Rainfall
You may enter a total rainfall amount to represent any rainfall which accumulated before
you obtained the Rain Collector II:
1. Press RAIN once or twice to select total rainfall.
2. Use ENTER to set the total rainfall amount. See "Using the Enter Key" in the weather
station manual.
Calibration of Older Model Weather Stations
This information applies only to users of the Weather Wizard II-S, Weather Wizard III,
and Weather Monitor II manufactured prior to April, 1993. To check if your station meets
this criterion, press the RAIN button on the console. If, when set to inches, the display
reads 0.0 (rather than 0.00), you have an older model station.

Standard Setting

When using the 0.01" setting of the Rain Collector II with an older model station, note
that the station is pre-calibrated for an earlier model 0.1" rain collector. To re-calibrate
your station, first set the display to inches, then change CAL to 0100. (See "Rainfall Cal-
ibration Number" on page 2 and/or your station user's manual for instructions on how to
change CAL.) Be aware that the console will revert to its default calibration (i.e., 0.1") if
it loses power.
Metric Setting
When using the 0.2 mm setting of the Rain Collector II with an older model station, note
that the station stores rainfall amounts in 0.2 mm increments but displays amounts
rounded to the nearest whole millimeter.
Note: Keep in mind when testing the rain collector with older weather stations that the display adds 1 mm for
each 5 tips of the bucket. Because the display rounds, however, the first change occurs after the bucket
tips 3 times (0.6 mm rounded to 1 mm).
10
Daily Rainfall Cleared