A75-302 Potentiometer Wind Vane by COMPTUS®

A75-302 Wind Vane.jpg
Comptus A75-302 Wind Vane.jpg
A75-302 Wind Vane North Alignment Mark.jpg
A75-302 Wind Vane Potentiomenter Connection Terminals.jpg
A75-302 Wind Vane.jpg
Comptus A75-302 Wind Vane.jpg
A75-302 Wind Vane North Alignment Mark.jpg
A75-302 Wind Vane Potentiomenter Connection Terminals.jpg

A75-302 Potentiometer Wind Vane by COMPTUS®


Proven and rugged wind direction vane with ratiometric potentiometer output for long cable runs in Wind energy applications

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Primary replacement for C3 Wind Vane in Wind Resource Assessment applications

  • Prooven in wind resource assessment for over 20 years

  • Durable construction with anodized aluminum and stainless steel


  • Meteorological studies

  • Wind direction sensor for wind data loggers

  • Yaw control on wind turbines

  • Environmental monitoring

  • Crane and lift operations wind monitoring


  • Simple mechanical construction

  • Long life, industrial/commercial grade potentiometer

  • Corrosion resistant materials

  • Multiple mechanical and contact seals

  • Very stable and smooth response to wind changes

  • Fully balanced sensor vane

  • Designed to minimize icing.


Proven dirt resistance and reliability with long service intervals over 20+ years

Proven years of reliability in wind energy application in highly dusty and dirty environments all around the world.

  • Optimized labyrinth and sliding bearings for dirt resistance.

  • Simple and reliable construction.


A75-104 Three Cup Anemometer Per IEC 61400-12-1 & IEC 61400-12-2:
Power performance measurements of wind turbines and on nacelle anemometry.
Type Accuracy Resolution Measuring range Environmental conditions range Starting wind speed Distance constant Survival wind speed
A75 Wind Direction Vane ±1% linearity Ratiometric 3-wire analog output 0...360°
(5° dead band)
0...100 %RH
2.2 MPH (1 m/s) 3m @ 5 m/s 0...214 MPH (96 m/s)



Tail Black UV stabilized injection molded polycarbonate Housing: Conductive Black UV stabilized polycarbonate Balance weight: bronze

Terminals: three #4-40 brass studs with nuts Potentiometer: aluminum shaft in sealed precision grade, stainless steel ball bearings, conductive plastic potentiometer element mounted in a machined aluminum housing.

A75 wind vane technical specifications and dimensional drawings can be found in the data sheet link above.

Mounting: 13 mm (0.5 in) diameter mast
Output signal Range: Direction-355 degrees electrical (5 degrees open), Signal: Analog DC voltage from conductive plastic potentiometer resistance 10 Kohm; linearity 1.0%, life expectancy of 50 million revolutions (4-6 years normal operation)
Supply Voltage 1...15 VDC
Power consumption Based on cable length and position of the 10 Kohm potentiometer excitation of 1VDC to 15 VDC
Operating temperature -55°C to +60°C (-67°F to 150°F)
Operating humidity range 0% to 100% RH
Survival wind speed 96 m/s (214 MPH) continuous
Connection Wire terminals housed under a rubber boot
IP – Protection rating IP53W (DIN 40050)
Size Vane radius 270 mm (10.5 in), Overall vane size - 6 cm h x 10 cm l (2.3 in x 3.8 in), Main housing diameter - 5 cm (2 in)
Total height height - 12 cm (4.3 in)
weight = aprox. 100g (0.2 lb)without mount
Mounting Using a cotter pin on a 13 mm (0.5 in) diameter mast with a #35 hole 11 mm (.35 in) from the top. Tighten electrical terminals to 3 ounce-inches torque./td>