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LAMBRECHT meteo
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AEM
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ARCO
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The external connection is carried out via a central connector which is located in the housing base. For further details
about the electrical connection please see section “Electrical connections“.
The typical power supply requirements of the sensor are 24 VDC with a current consumption of 20 mA. The input
range is 6.5...32 VDC. The heater of the ARCO is supplied with 24 VDC and has a current consumption of less than
0.9 A at 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 RS485 standard in talker mode. The line drivers are capable of
transmitting data over cable lengths up to 1,220 meters (4,000 feet). The cable lengths are dependent on the quality
of the cable used. As soon as the power supply of the sensor is switched on, the sensor automatically sends cyclic
data.
4.8.3 Safety regulations
Because the wind sensor is often mounted in exposed 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!
5 Maintenance
5.1 Regular maintenance and calibrations
The wind sensors require very little maintenance and are designed for a long service life. Regular visual checks are
recommended, regarding dirt build-up on the surface caused by the weather. Whenever this is the case, we strongly
recommend to clean it. A regular visual and functional check of the wind sensor 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 specific 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 offer you
our professional maintenance and calibration services.