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MeteoWind 2-Mertani-Mertani Instrument
MeteoWind 2 (MTI.AWS.BR.MW2). Simplify your wind logging with the most compact 1st Class anemometer and wind vane Elliptic cups create more torque & high linearity for improved data consistency vs. conical cups over a wide range of weather conditions. Very low start speeds, fast response and accurate long-term wind data are their inherent benefits. Elliptical cups offer a larger wind blown area than circular cups for higher torque and low start speeds. They are also flatter than conical cups for superb off-axis response and reduces effects of rain and snow on anemometer linearity. These benefits of elliptic cups also offer superb linearity, not before possible in such a compact anemometer.
• Very low starting wind speed for such a compact anemometer
• Excellent linearity and accuracy exceeding MEASNET requirements
• Excellent off-axis response. Low distance constant
• Flat elliptic cups are more resistant to snow buildup

MeteoWind 2

SKU: MTI.AWS.BR.MW2

  • WIND SPEED

    • Range: 0-80 m/s gust

    • Resolution: 0.01m/s

    • Accuracy: < 1% or < ±0.2 m/s (the greater of) or ±0.05 m/s (4-16 m/s) with MEASNET CALIBRATION

    • Sampling rate: 10Hz @3 pulses per revolution

    WIND DIRECTIONS

    • Range: 0-360°

    • Resolution: 1°

    • Accuracy: 2° (no dead-spot) 10Hz

    • Linearity: R2 > 0.99995 MEASNET/IEC 61400-12-1:2005

    • Tilt angle sensitivity: Cosine response, see graph. (Horizontal wind speed measurement)

    • Starting wind speed: <0.3m/s

    • Default linearity constants (Calibration equation coefficients): Anemometer Cups before 2023: m/s = 0.43*(Hz) + 0.33

    • Dendriform Cups 2023+: m/s = 0.4360 * (Hz) + 0.3500 for ±0.2 m/s or quadratic linearization: m/s = -0.00020 * (Hz)2 + 0.4470 * (Hz) + 0.3000 for ±0.15 m/s

    • Distance constant (Delay distance): 1.7 m (per ASTM D 5096-96)

    Electrical Specifications of Anemometer & Wind Vane

    • Output signal & communication: RS-485 with Modbus RTU & ASCII

    • Supply Voltage: 5...24VDC with inrush protection & reverse polarity protection

    • Power consumption: 2.6mA @12V (combined wind speed & direction at 10Hz sampling including RS-485 coms)

    • Lightning & surge protection: per IEC EN 61000-4-5 on both data & power lines, Surge, EFT/Burst, ESD 15kV

    Environmental Rating of Anemometer & Wind Vane

    • Operating temperature & humidity: -40°C to +80°C, 0% to 100% RH

    • Survival wind speed: >90m/s (324kph, 200mph)

    • Connection: Bayonet connector with silicone o-ring

    • IP – Protection rating: IP65W (DIN 40050)

    General Anemometer & Wind Vane Specifications

    • Heater (optional): 20W (1.1A) @ 24VDC (5W @ 12VDC), User selectable manual or automatic heater control

    • Weight (mass): Anemometer = aprox. 300g (without stainless steel mount)

    • Dimensions: Anemometer rotor diameter = Ø164mm, Wind vane radius =136mm, Total height = 320mm

    • Patented / Registered: OHIM 002153882-0001, 002153882-0002, 002153882-0003

    • Mounting: two M4 screws with supplied holder as pictured below

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