User`s guide

Chapter 2 __________________________________________________________ Product Overview
VAISALA_______________________________________________________________________ 55
0105-017
Figure 46 Rain Gauge RG13
Rain Gauge RG13 has a body and funnel of aluminum alloy, with an
accurately machined septum-ring at the top to give an orifice of
400 cm
2
. Bucket mechanism is mounted inside the body on a cast
aluminum-alloy base incorporating fixing lugs, three leveling screws,
and a spirit level.
The rain gauge comprises a divided bucket assembly, which is pivoted
at its center like a seesaw. Rain collects in the upper half of the bucket,
which is adjusted to tilt when a predetermined amount of water has been
collected. The tilting action discharges the collected water, and
repositions the opposite half under the discharge nozzle ready for
filling. The bucket tips are monitored by means of a magnet, which
energizes a reed switch capable of a virtually indefinite amount of
operations. This system ensures that the tipping bucket has a long,
reliable working life.