03301-L Wind Sentry Vane
Reliable, Accurate Wind Direction
Sensor for only measuring wind direction
weather applications supported water applications supported energy applications supported gas flux and turbulence applications supported infrastructure applications supported soil applications supported


The 03301, manufacted by R. M. Young, is the wind vane included with our Wind Sentry Sets (03002, 03001). Although some customers have valid applications that require monitoring wind speed only (without direction), monitoring wind direction only (without wind speed) provides little useful information. For this reason, the 03301 is available for two purposes:

  1. As a replacement vane for a Wind Sentry Set that requires replacement of the vane only
  2. As an "upgrade" for a customer that originally purchased only the anemometer and now wants to add the vane to make a complete Wind Sentry Set



Sensor Vane
Measurement Description Wind direction
Operating Temperature Range -50° to +50°C (assuming non-riming conditions)
Mechanical Range 360°
Electrical Range 352° (8° open)
Sensor Balanced vane; 16 cm turning radius
Accuracy ±5°
Damping Ratio 0.2
Delay Distance 0.5 m (1.6 ft ) 50% recovery
Starting Threshold
  • 0.8 m s-1 (1.8 mph) with 10° displacement
  • 1.8 m/s (4 mph) with 5° displacement
  • Precision conductive plastic potentiometer (10 kohm resistance)
  • 1.0% linearity
  • Life expectancy is 50 million revolutions.
  • Rated 1 W at 40°C, 0 W at 125°C.
Transducer Excitation Requires regulated dc voltage (15 Vdc maximum)
Transducer Output Analog dc voltage proportional to wind direction angle with regulated excitation voltage supplied by the data logger
Vane Length 22 cm (8.7 in.)
Weight 170 g (6 oz)


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

Data Loggers

Compatible Note
21X (retired)
CR10 (retired)
CR1000 (retired)
CR10X (retired)
CR200X (retired)
CR206X (retired)
CR23X (retired)
CR3000 (retired)
CR500 (retired)
CR5000 (retired)
CR510 (retired)
CR9000 (retired)
CR9000X (retired)

Additional Compatibility Information

Data Logger Considerations

The wind vane is measured by the BrHalf Instruction in CRBasic, and by Instruction 4 (Excite-Delay-SE) in Edlog.

FAQs for

Number of FAQs related to 03301-L: 3

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  1. The wind vane does not use bearings, so replacement is not necessary. Typically, the part that needs replacing is the potentiometer. Campbell Scientific recommends factory replacement.

    1. Using Short Cut, click the applicable wind direction sensor in the Selected Sensors list of the Outputs screen.
    2. The two output options enabled are Sample and WindVector. Select WindVector.
    3. The WindVector instruction has output options. Select an option with mean wind direction in it.