Rain Gauge RG13, RG13H

Features

• Designed to measure rainfall /

liquid precipitation

• Tipping bucket principle

• Suitable for remote and

unattended locations

• Provides accurate measurements

• Economical and proven in

operation

• Robust system component

Vaisala Rain Gauge RG13 and Vaisala Rain Gauge RG13H with heating option are

designed for measuring liquid precipitation.

RG13(H) uses a pulse-based tipping-

bucket mechanism to produce a contact

closure every time it receives

a predetermined quantity of rainfall

(0.1 mm / 0.2 mm / 0.5 mm).

The body and funnel of the gauge are

aluminum alloy. The septum ring at

the top gives an aperture of exactly

400 cm2 (62 in2).

The tipping-bucket mechanism is

mounted inside the body on a cast

aluminum-alloy base that has fixing slots,

3 leveling screws, and a spirit level.

The mechanism consists of a divided

bucket pivoted at its center. Rain collects

in the upper half. When this is full,

the mechanism tilts and discharges

the collected water, so that the other half

of the bucket can start filling.

A siphon device is fitted to the base of

the funnel to control the rate of flow into

the buckets. By ensuring a constant flow

rate into the tipping bucket, calibration is

made easier and accuracy improved.

The heating turns on when

the temperature drops below +4 °C

(+39 °F).