DAVIS Rain Collector with Grip Grooves and Bird Spikes User Manual

Rain Collector (# 7852 & 7852M)

This rain collector can be used with Vantage Pro2™ weather stations, including Vantage Pro2, Vantage Pro2 Plus, and the Anemometer/Sensor

Transmitter Kit.

Note: Model number 7852 is factory-calibrated to take rain measurements in 0.01 inches. The

metric version, 7852M, comes factory-calibrated to take measurements in 0.2 mm.

Components

The rain collector includes the following components. Please make sure you have all listed components before continuing.

• Rain collector cone latched onto base

• Base with tipping mechanism and 40’ (12 m) cable

• Four #8 x 3/4" screws

• Debris Screen

•16 3.5" bird spikes (optional).

Debris Screen

(ts snugly

inside cone)

TIPPING

MECHANISM

Base

14 Bird Spike

Sockets

RAIN CONE

Finger Grips

Optional

Bird Spikes

Latch

4 #8 X 3/4”

Screws

40’ Cable

Prepare the Rain Collector

Tools and Materials Needed

You may need some of the following tools and materials to install the rain collector.

•Drill with 3/32” (2 mm) drill bit

•Medium Phillips screwdriver

•3/16” (or 5 mm) wrench

•Cable clips or weather-resistant cable ties with screw holes or other means for mounting

•Small hammer (for optional bird spikes)

Rain Collector Internal Components

The illustration below shows the internal components of the rain collector, many of which are referenced in this manual.

Tipping

Spoons

Reed Switch

Drain

Screen

Magnet

+ -

Restraining

Post

Adjustment

Screw

Adjustment

Guide

Cable Slot

Base

Latch

Opening

Prepare the Rain Collector

1. Turn the rain collector upside down and remove

the cone from the base by rotating the base until the latches on the cone line up with the latch openings in the base then lifting the base away from the cone.

Bubble Level

Test the Rain Collector

Carefully cut and remove the

Tipping Spoons

plastic tie which holds the tipping spoons in place during shipping.

Plastic Tie

Test the Rain Collector

Before installing the rain collector, test the unit. If you are replacing a rain collector you previously installed, make a note of the total rainfall amount displayed. You may want to reenter this amount after you test the rain collector.

1. Open the transmitter shelter on the ISS. Remove the foam insert and feed the rain

collector cable up through the opening. Plug the cable to the appropriate connector in the sensor interface (See illustration on page 5.)

2. Press the RAIN

3. While watching the display on your console to see if it changes, slowly tip the

bucket until it drops to the opposite side. Each tip indicates 0.01" or 0.2 mm of rain. (It may take up to a minute for the first tip to register at the console.) If the display does not change, you may be tipping the bucket too quickly. Try again, more slowly this time.If the rainfall amount displayed on the console increases by the expected increment (either 0.01" or 0.2 mm) each time you tip the bucket, your rain collector is working properly.

DAY button on your console to display rainfall.

Install the Rain Collector

Note: Climbing on your roof may be hazardous. If you are uneasy about installing your unit

please have a qualified professional complete the installation. Davis specifically disclaims any liability for injury or loss resulting from the installation or use of the rain collector.

Choosing a Location for the Rain Collector

Keep the following in mind when choosing a location for your rain collector:

•You must mount the rain collector so that it is level. A built-in bubble level is attached to the base to simplify this process.

•Be sure there is an unobstructed path for water runoff from the drain screens.

•The rain collector contains a magnet-operated switch which may not operate correctly if you mount the rain collector on or near any object which is attracted to a magnet.

•Exposure to winds can reduce the measured rainfall amounts. Mount the rain collector where there are no obstructions of rainfall at low angles -- such as trees,

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