INSTALLATION GUIDE In order to achieve validate and reliable
data from the sensors adequate place and installation is
needed. To this purpose, Installation Guides were developed
by the World Meteorological Organization and the U.S. National
Weather Service. Following please find some recommendations:
Speed and wind direction:
ˇ The standard height for wind measurement is 10 meters
over ground level. In some particular applications (as in
forestall fires), it is 6 meters.
ˇ The distance between the sensor and any obstruction (natural
or artificial), should be at least 10 times the height of
ˇ If the sensor is mounted on top of a building, it should
be installed 1.5 times the height of the building to avoid
the distorted air flow.
ˇ In tall buildings, this is not always possible to accomplish,
so it is recommended to attach it to a pole 3.5 to 5 meters
high and on the side from where the strongest wind flow
ˇ If the sensors are mounted on a tower, over a stand, the
stand should be 2 times the diameter or diagonal of the
tower in length. It is also recommended to install it on
the side from where the strongest wind flow comes.
Temperature and humidity:
ˇ The standard height for installing these sensors is of
1, 25 to 2 meters, over the ground level, however because
of special requirements other heights can also be used.
ˇ The floor bellow the sensors should be natural soil or
grass, but never concrete or asphalt.
ˇ The area bellow the sensor should be open at least 9 meters
in diameter, and hills, slopes and holes should be avoided.
ˇ The distance between the sensors and any obstruction (natural
or artificial), should be at least 4 times the height of
ˇ If it is mounted on a tower, the stand should be at one
time the diameter or diagonal of the tower.
ˇ Temperature sensors should have the aspiration entrance
ˇ It is convenient to locate the sensor over a high platform
or on top of a building.
ˇ The place should be free of any obstruction that may cause
shadows over the sensor.
ˇ Colored walls should be avoided, as well as artificial
ˇ Precipitation sensors should be mounted in a way that
the base remains horizontal. It is normally installed with
the mouth 1.5 meters from the ground.
ˇ The area around the sensor should be natural vegetation
or crushed stone. Pavement should be avoided because it
can cause splashing.
ˇ The distance between the sensor and any obstruction to
the wind should be at least two times the height of the
ˇ In open areas, the use of wind stoppers is highly recommended.
1380 - C1093AA0 Buenos Aires - Argentina
Phone/Fax:(54-11)5272-5104 Líneas Rotativas - Fax: (54-11) 4383-7206
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