020C-L Wind Direction Sensor
Provides Research-Grade Accuracy and Precision
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The 020C, manufactured by Met One, measures wind direction with research-grade accuracy and precision. The 020C is commonly used with the WMS100 for wind-farm power performance measurements. The 020C is especially suited to applications requiring a low starting threshold, a high damping ratio, or a short delay distance.

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Detailed Description

The lightweight, airfoil vane is directly coupled to a single precision microtorque potentiometer. The built-in electronics provide a voltage source for the potentiometer and amplifies the output signal for transmission over long cable lengths.

The vane assembly is easily installed or replaced without requiring recalibration. All sensor components are constructed with stainless steel and anodized aluminum.


Sensor Airfoil vane
Measurement Description Wind direction
Measurement Potentiometer (half bridge)
Electrical Range 0° to 357°
Mechanical Range 0° to 360°
Measurement Threshold 0.5 mph
Measurement Linearity ± 0.5% of full scale
Accuracy ±3°
Damping Ratio 0.4
Delay Distance < 91 cm (3 ft)
Operating Temperature Range -50° to +85°C (-58° to +185°F)
Output 0 to 5 Vdc for 0 to 360° (0 to 2.5 Vdc optional)
Output Impedance 100 Ω maximum
Finish Anodized aluminum
Maximum Cable Length 91.44 m (300 ft)
Weight 0.68 kg (1.5 lb)

Power Requirements

Sensor Source 12 Vdc
Sensor Load 10 mA
Heater Source 12 Vdc
Heater Load 350 mA


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)