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Wind sensors with CANopen output

FSG Fernsteuergeräte (Germany) provides anemometers that detect wind speeds up to 50 m/s and wind directions from 0° to 360°. The wind speed is measured by means of a magnetic system; alternatively, users can choose a tachometer generator-based model.

THE DIRECTION OF THE WIND IS INDICATED by a wind vane. The anemometer is available in two versions for installation on mobile crane jibs and for pedestal or standpipe installation. Featuring an encapsulated housing, all versions are suitable for rugged environments: with a magnetic measuring system, they reach IP66 protection, with a tachometer generator the protection class is IP64. An optional, thermostat-controlled heater allows for use in temperatures as low as -50 °C.
The cups, which are available with rigid or elastic arms and the bearing cover, are also suited for safe outdoor use. Additionally, the company provides models for gas hazardous areas and models with high-quality surfaces. Users can select between a 4 mA to 20 mA output with a two or three wire connection, a CANopen digital output, or a Profinet interface (optionally with Profisafe protocol). Typical applications include safety and monitoring systems for cranes and excavators as well as ski lifts, cable cars, and meteorological stations.

The magnetic measuring system allows an absolute wear-free and non-contact signal recording, even reliable under extreme environmental conditions. A corrosion-resistant cross arms- driven permanent magnet creates a signal change within the magnet sensor located inside a generally closed aluminum casing. A downstream processor converts the magnet pulses into an analogue measuring signal or digitally coded (pulse output or CAN signal). A tacho-generator incorporated into an aluminum casing is driven by the wind speed. The output signal, being proportional to the wind speed, is taken in form of a voltage in two-wire circuit.

Anemometers are used for detecting and, in connection with the appropriate indicator, monitoring a maximum wind velocity. They are used mainly in safety and monitoring systems of cranes and excavators, on ski-lifts and cable-cars, wind energy plants as well as in meteorological stations. The indicator contains an electronic LED circular bar graph display with a maximum limiting position contact, adjustable from outside. The measuring value is represented in form of a green bar graph display. By a read-out potentiometer on the front side the limit value mark can be preselected within the chain of diodes.

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