© Adolf Thies GmbH & Co. KG · Hauptstraße 76 · 37083 Göttingen · Germany
021814/03/21
Phone +49 551 79001-0 · Fax +49 551 79001-65 · [email protected] · www.thiesclima.com
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3 Setup and Mode of Operation
The wind transmitter can be supplied with direct voltages from 3.7V up to 42V at very low
power consumption. All of the electronics is a streamlined, low power design. Supply of the
optional heater is provided separately with a direct or alternate voltage of 24V. The heater
will most probably prevent icing/clogging of the wind transmitter First Class even under ex-
treme meteorological conditions.
The external parts of the device are made from corrosion resistant anodized aluminum.
Highly efficient labyrinth seals and O-rings protect the sensitive parts on the inside of the de-
vice from humidity and dust influences. It is assembled on a mast pipe, the electric connec-
tion is in the lower part of the sensor.
Wind Velocity:
A cup star with ball bearing and low inertia and 3 cups from carbon fiber reinforced plastic is
rotated by the wind. The velocity is sensed opto-electronically, translated into a square signal
with frequency proportional to the velocity and measured 4 times per second. The measured
frequency is converted into a wind velocity with the standard curve. An adaptation of this
standard curve can be done with calibration values from a programmable calibration table
(
Standard curve and calibration tables).
The compensation depending on the air pressure which is calculated with the help of the cali-
bration table.
All corrected wind velocity values are available as instantaneous values. The Instantaneous
value is the gliding mean value of the last second.
For the calculation of mean value, gust, minimum value, standard deviation and intensity of
turbulence the source can be selected by the command „MS“.
The following figures show the described connection.