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Windspeed Ltd (Vector Instruments), 113 Marsh Road, RHYL, N. Wales, LL18 2AB, United Kingdom.
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 Saturday, June 15 2024  Home [arrow]  Products [arrow]  Windvanes [arrow]  W200P/FC (10K Pot) Search site:  

Latest Weather...
(Rhyl, N.Wales, UK)
Wind Speed:  8.1 mph
Wind Direction:  320 °
Air Temp.:  13.7 °C
Rel. Humidity:  78.2 %
Rain (last Hr):  0.0 mm
(updated at: 12:56 UTC)

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Celebrating more than 50 years manufacturing & servicing High Quality Vector Instruments Anemometers and Windvanes at Windspeed Ltd
W200P/FC Potentiometer Windvane
Datasheet: login to download This NEW premium quality First Class W200P/FC windvane is a enhanced version of our W200P windvane which is a popular choice for demanding Wind Assessment applications, having "First Class" performance to meet the requirements of the IEC61400-12-1 standard.

The NEW W200P/FC Potentiometer Windvane incorporates a 10K Ohm precision wire-wound potentiometer as a shaft angle transducer, enabling wind direction sensed by the NEW Large F20/FC fin to be accurately determined when connected to suitable measuring equipment, such as a data logger or PLC.

This new 10K potentiometer has the lowest possible torque consistent with long life and reliability, the small gap at north being filled with an insulating material to ensure smooth operation over the full 360°. This new 10K potentiometer has an increased measuring range vs our standard W200P windvane, typically 358 degrees or better (gap 2 degrees or smaller).

The NEW F20/FC vane-arm (fin) is significantly larger than the F20 on the standard W200P which yields a much lower threshold/starting speed, but despite this larger size, it is also rated to withstand a higher maximum windspeed due to the use of higher specification alloys. The fin assembly is attached using the unique Porton™ gravity fastener allowing good alignment and rapid attachment and release, and it's removable counterbalance allows this larger fin to continue to be shipped within our standard small instrument box for economical/convenient transport/shipping.

W200P/FC with F20/FC fin dimensions

W200P/FC with F20/FC fin
Construction is from high-strength anodised aluminium alloys and stainless steels for exposed parts. Combined with a hard plastic (upper) bearing and precision ball-races, the result is an instrument suitable for continuous exposure to the weather, with a long service interval.

Options for this windvane include:

This NEW windvane is suitable for many applications. Please contact us for advice on the correct choice of options and accessories and suggestions on measuring techniques for best results in your application.

This windvane is Fixed Reference, that is to say that it must be aligned with north during installation and fixed in that position/orientation during operation. For mobile platforms or situations where the orientation of the platform is unknown, a self-referencing windvane such as our SRW1G would be appropriate. The 10K Ohm resistance of the potentiometer is no barrier to low power operation as most applications where power is critical use data loggers which are capable of energising the potentiometer only for a short interval during the actual measurement. The 10K ohm potentiometer resistance allows direct connection to a wide range of dataloggers without the need for any extra adapter boards/pods/modules/cards.

The high specification 10K precision potentiometer used in this windvane is a derivative of the well-proven 1K potentiometer used in our standard W200P windvane, which has been extensively tested by us, both in the lab and in the field, and has been found to be the most robust and reliable of all the types we have examined. It 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 (Note: for best results, it is not recommended that this instrument be configured as a variable resistance).

NOTE: While the instrument "body" is the same as other windvanes in the W200P series, the F20/FC vane-arm/fin used with the W200P/FC is much larger than the standard F20 fin used with other windvane models, so you must ensure that the windvane is positioned further away from nearby objects (anemometer, mounting hardware, or tower/pole etc) when installing it - the tip sweeps a radius of approx. 286mm which is much larger than the 155mm of the standard W200P. This is a particularly important consideration when replacing existing standard W200P windvanes with W200P/FC models.

This instrument is commonly used in conjunction with our A100L2, A100LK, A100LM, and A100R anemometers. The recommended mounting adaptors for use with this instrument are our type 405 and 405-1 series.

Specification Highlights:

  • Threshold:
  • 0.5m/s (according to ASTM 10deg deflection test)
  • Distance Constant:
  • 4m
  • Damping Ratio:
  • 0.2m
  • Recovery Distance:
  • 0.9m
  • Damped Natural Wavelength:
  • 6m
  • Repeatability:
  • Typ. +/-0.1 ° (max. +/- 0.5 °) if vane removed and replaced (note: no measurable backlash movement during use)
  • Life of Potentiometer:
  • 5x107 cycles (10 years typical exposure)
  • Service Interval:
  • 4 to 5 years
  • Accuracy:
  • +/-3° in steady winds over 3.5m/s, with +/-2° obtainable following calibration.
  • Maximum Wind Speed:
  • over 80 m/s (in real-world turbulent conditions)
  • Range:
  • 360° mechanical angle, continuous rotation allowed
  • Temperature Range:
  • -40 to +70 °C
  • Potentiometer Resistance:
  • 10000 Ohms (10K Ohms) (+/-2%)
  • Wiper Current:
  • 10uA recommended (10mA absolute maximum)
  • Potentiometer Voltage:
  • 1V to 5V (recommended), 20V absolute maximum.
  • Potentiometer Continuity Angle:
  • 358.2 +/- 0.7° (i.e. typ. 1.8° gap at north)
  • Potentiometer Variation Angle:
  • 357.5 +/-0.6 ° (i.e. typ. 2.5° dead-band)
  • Potentiometer Resolution:
  • better than +/-0.2°
  • Potentiometer Independent Non-Linearity:
  • +/-0.25% (unloaded, with zero wiper signal load/current, and potentiometer wiper on the track)
  • Connections:
  • 6 wire screened cable. Screen insulated at instrument end, black connects to body. Red & White connect to 360° end and Blue & Yellow connect to 0° end of pot. Green connects to wiper.
  • Fin (Vane-Arm):
  • type F20/FC large fin type as standard.
  • Dimensions:
  • This instrument uses our standard windvane body design/dimensions, however the F20/FC fin is larger (151mm vs 102mm height) and the tip sweeps a larger radius of 286mm (vs 155mm)
  • Wiring/Connections (Cable colours):
  • For wiring details click HERE
  • Cable:
  • 3m (9ft10in) permanently attached 6-conductor* cable with braided shield/screen as standard. Longer lengths are available to order (up to 115m). Spec: Def Stan 61-12 part 4, 0.22mm²(∼24AWG). *Note: 8-conductor used for /HE4 models.
  • Calibration Certificate (optional extra):
  • The W200P/FC windvane is available with an IEC/MEASNET Calibration Certificate (for an additional charge)
  • Regulatory/Certifications: :
  • UKCA CE marks CE and UKCA Marked for RoHS3 (RoHS2+Phthlatales amendments) and EMC

  • Reliability & Safety
  • Specifications are correct at time of writing and may change without notice. Please contact us to confirm the latest specifications.

    Additional Information:

    FAQ: IP Ratings
    Windspeed Ltd (Vector Instruments)
    Windspeed Limited (trading as Vector Instruments),
    113 Marsh Road, RHYL, North Wales, LL18 2AB, United Kingdom
    Tel: +44 (0) 1745 350700
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