(14523/14524) PRO-Modbus
Manual
Manual
Wind Sensors PRO-Modbus (14523/14524)
1.
Warranty
Please note the loss of warranty and non-liability by unau-
thorised manipulation of the system. You need a written
permission of the LAMBRECHT meteo GmbH for changes
of system components. These activities must be operated
by a qualifi ed technician.
The warranty does not cover:
1. Mechanical damages caused by external impacts (e. g.
icefall, rockfall, vandalism).
2. Impacts or damages caused by over-voltages or elec-
tromagnetic fi elds which are beyond the standards and
specifi cations in the technical data.
3. Damages caused by improper handling, e. g. by wrong
tools, incorrect installation, incorrect electrical installation
(false polarity) etc.
4. Damages which are caused by using the device beyond
the specifi ed operation conditions.
2.
Initial operation
The wind can be represented by a vector quantity. For a
complete description of the wind it is necessary to specify
its speed and direction. The two components are subject to
spatial and temporal variations; thus, strictly speaking, they
are valid only for the site where the measuring instrument is
put up. We therefore recommend to select the place of instal-
lation very carefully.
Selecting the place of installation
Generally, wind measuring instruments should not measure
the specifi c wind conditions of a limited area, but indicate the
typical wind conditions of a wider area. The values measured
at diff erent places must be comparable.
Thus, when installing the sensor you should make sure the
place of installation is not under the lee of great obstacles.
The distance between the obstacles and the sensor should
be 10 times the height of the obstacles (this corresponds to
the defi nition of an undisturbed terrain).
If an undisturbed terrain of this kind does not exist the sensor
must be put up at a height of at least 5 m above the obstacle
height.
If the sensor must be installed on a roof top the place of instal-
lation must be in the middle of the roof to avoid predominant
wind directions.
If you want to measure both wind direction and wind speed,
install the sensors at the same measuring point, if possible,
and make sure to avoid any mutual infl uence of the sensors.
A wind sensor pair easily meets this requirement since the
sensors are set up side by side. Their horizontal distance
should be approximately 1.5 m. The two sensors must be
staggered vertically so that the lower edge of the upper wind
speed sensor is 0.1 to 0.5 m above the upper edge of the lower
wind direction sensor.
Mounting of the cup rotor and the wind vane at the
sensor
The bores at the cup rotor and the wind vane are attached in
such a way that they can only be installed in a certain clear
position. All 3 screws must be used to fasten the cup rotor
resp. the wind vane. Thus the correct direction of rotation is
guaranteed. The necessary wrench is included in delivery.
3.
Maintenance
The sensor design permits long periods of maintenance-free
operation.
We recommend a regular visual verifi cation and functional test
of the wind sensors as well as a sensor calibration of both
sensor types at intervals of 2 years.
With problems, which you cannot solve, do not hesitate to
contact our LAMBRECHT meteo service under:
Tel.:
+49-(0)551-4958-0
Fax:
+49-(0)551-4958-327
e-mail: [email protected]
1
Halbrundschraube mit
Innensechskant
round head screw with
hexagon socket
M3x8 DIN7380
2
Schalenstern / cup rotor
3
Schalensternglocke / cup rotor
protective globe
4
Skt-Stiftschlüssel / hex head
wrench
4
2
3
1
3
1
4
2
1
Schraube mit Innensechskant
screw with hexagon socket
M3x12 DIN7380
2
Windfahne / wind vane
3
Windfahnenglocke / wind vane protective globe
4
Skt-Stiftschlüssel / hex head wrench
2
