Manual
Combined Wind Sensor ARCO-Modbus
(14581) ARCO-Modbus
Manual
The reference point can be selected using a topographical
map (1:25000). The exact position of the reference point is
determined using an amplitude compass that can be adjusted
horizontally on a stand.
The compass declination has to be considered!
A functional check at three points off set by 90° directions is
recommended.
Follow all safety instructions while setting up the
sensor on to a mast.
2.8.2 Power and signal connection
If the sensor is mounted in the correct manner and con-
nected with the right cable (accessory), you can attach the
wires for the power supply and signal outputs to the data
acquisition equipment (computer).
The ARCO sensor requires a 4-pole M12 plug connector.
The cable shield should be connected with both ends at the
ground wire (PE).
To reduce the risk of inductive interference the sen-
sor must be properly grounded (screening on both
sides).
The external connection is carried out via a central connec-
tor which is located in the housing base. For further details
about the electrical connection please see section "Electrical
connections“.
The typical power supply of the sensors is 24 VDC with a
current consumption of max. 920 mA (incl. heating). The
input voltage range can be 20...28 VDC. The heating of the
ARCO-Modbus has a heating power of 2-9 W.
Under most climatological conditions the heating prevents
blocking of the moving sensor parts. Neither the cup rotor nor
the wind vane are heated. In the case of icing or formation
of ice on the moving sensor element the function is restricted
for the period of icing.
The output signal of the sensor conforms to the Modbus RTU
to RS-485 standard.
2.8.3 Safety regulations
Because the wind sensor is often mounted in ex-
posed locations at dangerous heights the installation
personnel have to pay attention to the relevant safety
regulations. During the electrical installation work the
external circuitbreaker must be switched off .
It is not permitted for unauthorized persons to open
the housing!
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Maintenance
3.1
Regular maintenance and calibration
The sensors are very low-maintenance and designed for a
very long lifetime. Regular visual checks are recomended,
regarding dirt build-up on the surface caused by the weather.
Whenever this is the case, we strongly recommend that you
clean it. A regular visual and functional check of the wind sen-
sor is recommended.
If reference measurements are necessary, it must be
stringently noted that a comparison of the measured
values is given only if the measurements take place
under same conditions. I.e. the reference equipment
must be used very close to the sensor!
The sensor is a measuring instrument and thus user specifi c
standards apply regarding the period of recalibration.
Manufacturer's recommendation: 2 years.
For the long-term assurance of the function and accuracy of
the proposed components, we are pleased to off er you our
professional maintenance and calibration services.
3.2
Visual check and cleaning
The use of the sensor under the respective environmental
conditions requires certain actions. It is thus recommendable
to clean the outside of the housing and shelter within specifi c
intervals. The intervals are dependant on the environmental
conditions and the degree of soiling. We recommend a regular
visual and functional check.
In case you should be faced with any specifi c problems, which
you are unable to solve, please contact the LAMBRECHT
meteo service:
Tel.:
+49-(0)551-4958-0
Fax:
+49-(0)551-4958-327
E-Mail: [email protected]
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Transport
In case it is necessary for you to ship or transport the sensor, it
must be carefully packed to prevent damages during transport.
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