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Windspeed Ltd (Vector Instruments), 113 Marsh Road, RHYL, N. Wales, LL18 2AB, United Kingdom.
Windspeed Limited (trading as Vector Instruments)
Tel.: +44 (0) 1745 350700 (08:30-13:00hrs UK time)
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 Thursday, December 07 2023  Home   Products   Anemometers   A100K, A100M, A100S Search site:  

Latest Weather...
(Rhyl, N.Wales, UK)
Wind Speed:  7.5 mph
Wind Direction:  164 °
Air Temp.:  8.8 °C
Rel. Humidity:  94.8 %
Rain (last Hr):  0.0 mm
(updated at: 12:23 UTC)

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    *** Celebrating more than 40 years manufacturing & servicing High Quality Vector Instruments Anemometers and Windvanes at Windspeed Ltd ***
    A100K, A100M and A100S Anemometers
    Datasheet: login to download This anemometer provides a pulse/frequency output signal suitable for direct measurement in Knots, Metres/second or run of wind when connected to a counter, PLC or data logger and is often used in applications where wind speed is required as an input to a PLC which is controlling equipment such as cranes, sprayers or water fountains.

    The 3-cup R30 rotor drives a slotted disk interrupting a light-beam generating a stream of pulses. The A100K, A100M and A100S have disks with different numbers of slots and differently calibrated rotors to obtain the different output scalings.

    It's electronics are intended to operate from the 12V and 24V DC supplies commonly available at industrial sites, and anti-surge protection is built-in. With 24V DC supply, 24V pulses are generated which are ideal as inputs to a PLC which can count pulses or measure frequency to determine the wind speed using this robust instrument.

    Construction is from anodised aluminium alloys, stainless steels and weather resisting plastics for exposed parts. Precision corrosion resistant ball-races and a stainless steel shaft enable the R30 rotor response to produce a highly sensitive yet robust instrument suitable for continuous exposure to the weather.

    Options for this anemometer include:
  • /HE-4 Internal Anti-Icing Heater
  • /HE-1 & /HE-2 External/Retrofit Anti-Icing Heaters
  • /WR Marine Version

  • Note: /WR, /HE-1 and /HE-2 are not recommended for high precision applications.

    The recommended mounting adaptors for use with this instrument are our type 405 and 405-1 series.

    This instrument is commonly used in conjunction with our W200P Windvane.

    Specification Highlights:

  • Threshold:
  • 0.15m/s
  • Maximum Windspeed:
  • over 75m/s (146Kts)
  • Temperature Range:
  • -50 to +70 °C
  • Accuracy:
  • 1% of reading between 10 and 55m/s, 2% above 55m/s. 0.1m/s for 0.1..10m/s
  • Distance Constant:
  • 2.3m +/-10% (R30 rotor)
  • Supply Voltage:
  • 10..30V DC ( @ 30mA typical at 12V DC)
  • Output Signal:
  • Squarewave (voltage levels = <0.1V and supply voltage approx.)
  • Output Resistance:
  • 3.3K Ohms
  • Anti-Surge:
  • Built-in
  • Duty Cycle:
  • 50% (A100K: +/- 20%, A100M: +/- 10%, A100S: +/- 5%)
  • A100K Output Cal.:
  • 10Hz per Knot (10 pulses per 1.69ft of wind, resolution = 5.15cm)
  • A100M Output Cal.:
  • 10Hz per m/s (10 pulses per metre of wind, resolution = 10cm)
  • A100S Output Cal.:
  • 0.8Hz per m/s (1 pulses per 1.25 metre of wind, resolution = 125cm)
  • Rotor:
  • 3-cup R30K (A100K), R30M (A100M) or R30S (A100S) as standard.
  • Dimensions:
  • This instrument is constructed using our standard rotor and anemometer body design and dimensions.
  • Wiring/Connections (Cable colours):
  • For wiring details click HERE
  • Cable:
  • 3m (9ft10in) permanently attached 4-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.
  • Regulatory/Certifications: :
  • CE and UKCA Marked for RoHS3 (RoHS2+Phthlatales amendments) and EMC

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

    Common Questions:
  • What is the difference between "M" and "K" type instruments (e.g. A100LM and A100LK) ?
  • Do I have to use a "K" instrument to measure the wind speed in knots and a "M" instrument to measure in m/s ?

  • Additional Information:

    This instrument is commonly used in conjunction with our W200P Windvane.
    FAQ: IP Ratings
    Please call/email us if you would like access to additional product information, data and specification sheets for this product.
    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   Fax: +44 (0) 1745 344206
    Website design and content is copyright (c) 2003-2023 Windspeed Limited (unless otherise stated). All trademarks are acknowledged.
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