WindSensor P2546A Cup Anemometer

Model Number : 4333

DescriptionThe WindSensor P2546A anemometer is a dependable wind measurement sensor constructed of durable materials, including anodized aluminum and stainless steel.

Wind speed is measured using a three-cup, one-piece rotor assembly. Permanent magnets mounted on the shaft cause a switch to open and close two times per revolution. The switch has no bounce and is equipped with a special built-in mechanism which reduces the variation in operating time over the frequency range. This feature provides instantaneous wind speed by measuring the time interval of each revolution.

  • One-piece rotor anemometer head (OPR)
  • Low threshold speed 
  • Low distance constant
  • Negligible overspeeding
  • Angular response independent of wind speed
  • Fully tested temperature performance
  • Symmetrical geometry  
  • No external power source
  • Bounce free reed switch
  • MEASNET calibrated
Sensor type 3-cup anemometer
  • wind resource assessment
  • meteorological studies
  • environmental monitoring
  • Sensor range 0 m/s to 70 m/s (0 mph to 157 mph)
    Instrument compatibility all NRG loggers
    Input signal
    Signal type (sensor output)
    • potential-free contact closure
    • duty cycle 40-60%
    • max switching voltage 30 V
    • max recommended switching current 10 mA
    • series resistance 330 Ω,1 W
    Output signal
    Calibration each anemometer individually calibrated, calibration reports provided via electronic download
    Output signal range 0 Hz to 112 Hz
    • temperature influence
           -15 to 60°C (5 to 140°F) < 0.05 m/s (0.11 mph)
    • nonlinearity <0.04 m/s (0.09 mph)
    • standard deviation of slope 0.027 m/s (0.060 mph)
    • standard deviation of offset 0.014 m/s
    Response characteristics
    Threshold < 0.4 m/s (0.9 mph)
    Distance constant (63% recovery) 1.81±0.04 m (5.94 ±0.13ft )
    Moment of inertia 1.01× 10-4 kg-m2 (7.45 × 10-5 S-ft2 )
    Swept diameter of rotor 187 mm (7.36 inches)
    Mounting onto a 25 mm (0.984 inch) diameter mast with two set screws
    Tools required 4mm Allen wrench
    Operating temperature range -35 °C to 60 °C (-31 °F to 140 °F)
    Operating humidity range 0 to 100% RH
    Connections push-pull connector (purchased separately)
    Weight 0.36 kg (0.8 pounds)
    • 3 cups of conical cross-section
           70 mm (2.76 inches) dia.
    • 282 mm (11.10 inches) overall assembly height
    Cups robust one-piece injection molded polycarbonate/glass blend
    Body anodized aluminum
    Shaft stainless steel
    Bearing stainless steel ball bearings
    Magnet two permanent magnets

    Have a question? Need help configuring and testing your NRG equipment? We’re here to help. NRG Systems products come with five resources for technical support.

    Product Documentation

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    If you have checked the documentation, forums, and Knowledge Base and are still having problems with your equipment purchased within the past two years, you will need to contact NRG for a RMA return authorization number to return a defective product. This is the quickest and easiest way to get you back to doing what you are trying to do, measure the wind. Please see NRG Warranty for warranty details and instructions.

    Repair Service

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