Vector W200P/L (Low Torque) Potentiometer Windvane


The W200P/L Low Torque Potentiometer Windvane has a lower torque than the standard W200P potentiometer windvane, allowing increased sensitivity at lower windspeeds, however the gap and "deadband" at north are larger and the potentiometer is less robust.

The standard F20 vane-arm (fin) assembly is attached using the unique Porton gravity fastener allowing good alignment and rapid attachment and release. A large alternative vane-arm (fin), type F20/LV is available where extra sensitivity is required. The precision potentiometer used in this windvane is connected with 2-wires to each end of the track and one to the wiper enabling it's use in a variety of bridge and potentiometric measurement configurations 


  • Threshold: 0.5m/s (standard), 0.6m/s (/WR), 0.35m/s (/LV)
  • Distance Constant: 2.3m (standard), 2.4m (/LV)
  • Repeatability: +/- 0.5 ° if vane removed and replaced
  • Life of Potentiometer: 2x107 cycles (4 years typical exposure)
  • Service Interval: 2 to 3 years
  • Accuracy: +/-4° in steady winds over 3m/s (3.5m/s /WR, 2m/s /LV).
  • Maximum Wind Speed: over 75 m/s (standard), over 60m/s (/LV)
  • Range: 360° mechanical angle, continuous rotation allowed
  • Potentiometer Resistance: 2000 Ohms (+/- 3%)
  • Wiper Current: 50uA recommended (10mA absolute maximum)
  • Potentiometer Voltage: 1V to 5V (recommended), 20V absolute maximum.
  • Potentiometer Continuity Angle: 357 +/- 2° (typically 3° gap at north)
  • Potentiometer Variation Angle: 355 +/-3° (typically 5° dead-band)
  • Potentiometer Resolution: +/-0.25°
  • Potentiometer Independent Non-Linearity: +/-0.5% (unloaded)
  • Connections: 6 wire screened cable.
  • Materials: Anodised aluminium alloys and stainless steels for exposed parts. Hard plastic (upper) bearing and precision ball-races. A marine version (/WR) is available.


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