Vaisala RG13, RG13H Technical data
Vaisala Rain Gauge RG13, RG13H
www.vaisala.com
Features/Benefits
Designed to measure rainfall
▪
and precipitation in remote and
unattended locations
Provides accurate
▪
measurements with long term
performance
Requires no regular
▪
maintenance
Economical and proven in
▪
operation
The Vaisala Rain Gauge RG13, RG13H
uses a tipping-bucket mechanism to
produce a contact closure every time
it receives a predetermined small
quantity of rainfall (0.2 mm).
The body and funnel of the gauge
are of aluminium alloy. An accurately
machined septum-ring at the top
gives an aperture of exactly 400 cm
The tipping-bucket mechanism is
mounted inside the body on a cast
aluminium-alloy base equipped with
xing slots, three levelling screws
and a spirit level.
The mechanism consists of a divided
bucket pivoted at its centre. Rain
collects in the upper half. When
this is full, the mechanism tilts and
discharges the collected water,
allowing the other half of the bucket
to begin lling.
2
A siphon device is tted to the base
of the funnel to control the rate of
ow into the buckets. By ensuring
a constant ow rate into the tipping
bucket, calibration is made easier and
accuracy improved. The alternate
lling and discharging continue as
long as rain is falling, and at each
tilt, a magnet momentarily closes the
.
contacts of a reed switch.
In the rain gauge of type RG13H, a
heater element is provided inside
the body in order to melt snow. The
heater switches on at temperatures
below +4 °C.
Technical Data
Diameter of aperture 225 mm
Area of aperture 400 cm
Rainfall capacity unlimited
Sensitivity (rainfall per pulse) 0.2 mm
Dimensions
Height 390 mm
Diameter 300 mm
Weight 2.5 kg
Operating temp. range -40 ... +60 °C
Heating connection/disconnection at +4 °C
Heating power 40 W (1 A / 40 VDC)
Accuracy 1 % (at 25 mm/h)
Resolution 0.2 mm
(also 0.1 mm and 0.5 mm
available)
2
For more information, visit
www.vaisala.com or contact
us at sales@vaisala.com
Ref. B010195EN-D ©Vaisala 2010
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copyrights retained by Vaisala and its individual partners. All
rights reserved. Any logos and/or product names are trademarks
of Vaisala or its individual partners. The reproduction, transfer,
distribution or storage of information contained in this brochure
in any form without the prior written consent of Vaisala is strictly
prohibited. All specifications — technical included — are subject
to change without notice.
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