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6 Recommendation Side Selection / Standard Installation
In general, wind measuring instruments are supposed to record wind conditions over a large
area. According to international regulations, the surface wind should be measured at a height
of 10m above even open terrain, in order to achieve comparable values. An open terrain is
defined as terrain where the distance between the wind-measuring instrument and the next
obstacle is at least ten times the height of this obstacle (acc. to VDI 3786 sheet 2 as well as
Guide to Meteorological Instruments and Methods of Observation, Sixth Edition, WMO-No.
8). If this regulation cannot be fulfilled, the measuring instrument should be installed at a
height at where the measurement values are not influenced by any local obstacles. In any
case, the measuring instruments should be installed at a height of 6 ... 10m above the mean
height of the buildings or trees in the vicinity. If it is necessary to install the instrument on a
roof, it should be installed in the center of the roof in order to avoid any preferential
directions.
7 Installation
Attention:
Storing, mounting, and operation under weather conditions is
permissible only in vertical position, as otherwise water can get
into the instrument.
Note
:
When using fastening adapters (angle, traverses, etc.) please take a possi-
ble effect to the measuring values by shading into consideration.
Attention:
The device may only be supplied with a power supply of
the "Class 2, limited power".
© Adolf Thies GmbH & Co. KG · Hauptstraße 76 · 37083 Göttingen · Germany
Phone +49 551 79001-0 · Fax +49 551 79001-65 · info@thiesclima.com · www.thiesclima.com
021814/03/21
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