024A-L Wind Direction Sensor
Reliable, Accurate Wind Direction
Compatible with most Campbell Scientific data loggers
weather aplicaciones soportadas water aplicaciones soportadas energy aplicaciones soportadas gas flux and turbulence aplicaciones soportadas infrastructure aplicaciones soportadas soil aplicaciones soportadas


The 024A, manufactured by Met One, is a wind vane that measures wind direction only. It can be used in tandem with the 014A Wind Speed Sensor. However, this combination has been largely replaced by the 034B, which monitors both wind speed and wind direction.

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Detailed Description

The 024A Wind Vane measures wind direction from 0 to 360 degrees with a 5 degree accuracy specification. Wind direction is sensed with a 10 kohm potentiometer. With the precision excitation voltage from the data logger applied to the potentiometer element, the output signal is an analog voltage that is directly proportional to the azimuth of the wind direction.


Sensor Vane
Measurement Description Wind direction
Operating Range 0 to 360°
Threshold 0.45 m s-1 (1.0 mph)
Accuracy ±5°
Operating Temperature Range -50° to +70°C (assumes non-riming conditions)
Delay Distance < 1.5 m (5 ft)
Damping Ratio
  • 0.25 (standard)
  • 0.4 (optional fast response)
Resolution 0.5°
Height 33.8 cm (13.3 in.)
Length 44.7 cm (17.6 in.)
Vane Height 30.5 cm (12 in.)
Vane Width 7.6 cm (3 in.)
Weight 450 g (1 lb)


Sand, Dust, and Fungus MIL-E-5272
Salt Spray MIL-E-12934
Resistance 0 to 10 kΩ


Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.


Product Compatible Note
CR1000 (retired)
CR3000 (retired)
CR800 (retired)
CR850 (retired)

Additional Compatibility Information


The 024A can be attached to a crossarm via a 17953 NU-RAIL fitting or a CM220 Right Angle Mounting Bracket. Alternatively, the 024A can be attached to the top of a CM106B or a stainless-steel tripod via the CM216 Sensor Mounting Kit. The CM216 extends 4 in. above the mast of the tripod.

Data Logger Considerations

The 024A uses one single-ended input channel on the data logger. An excitation channel is required but due to the high impedance of the 024A, can be shared with other high impedance sensors.


The 024A is read by the BrHalf instruction in CRBasic and by Instruction 4 (Excite-Delay-Single-ended Measurement) in Edlog.

Casos de estudio

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