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Vaisala Weather Transmitter WXT520 Access to Real Time Weather Data

Accurate and stable Vaisala Weather Transmitter WXT520 measures six most essential weather parameters: wind speed and direction, liquid precipitation, barometric pressure, temperature, and relative humidity

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    Update to product performance specification: click here.

    The Vaisala Weather Transmitter WXT520 measures barometric pressure, humidity, precipitation, temperature, and wind speed and direction.
    • Measures 6 most essential weather parameters as WXT510
    • Low power consumption - works also with solar panels
    • Compact, light-weight
    • Easy to install
    • No moving parts
    • Vaisala Configuration Tool for PC
    • USB connection
    • Housing with mounting kit IP66
    • Applications: weather stations, dense networks, harbors, marinas
    • All WXT510’s sent to Vaisala for service will be upgraded to WXT520
    Technical Specifications

     Technical Specifications


    Wind speed


    Measurement range ​0 ... 60 m/s

    ​Accuracy ​±3% at 10 m/s


    ​Measurement range ​0 ... 360°

    ​Accuracy ​±3°

    ​Response time ​250 ms

    Liquid precipitation

    Rainfall ​cumulative accumulation after latest automatic or manual reset

    ​     output resolution ​0.01 mm, 0.001 inches

    ​     accuracy ​5%*

    Rainfall duration ​counting each ten-second increment when droplet detected

    ​     output resolution ​10 s

    Rain intensity ​one-minute running average in ten-second steps

    ​     range ​0 … 200 mm/h (broader range with reduced accuracy)

    ​    output resolution ​0.1 mm/h, 0.01 inches/h

    Barometric pressure

    ​Measurement range ​600 ... 1100 hPa

    ​Accuracy ​±0.5 hPa at 0 ... 30 °C (+32 ... +86 °F)
    ±1 hPa at -52 ... +60 °C (-60 ... +140 °F)

    Air temperature


    Measurement range

    -52 ... +60 °C (-60 ... +140 °F)

    ​Accuracy at +20 °C (+68 °F) ​±0.3 °C (±0.5 °F)

    Relative humidity


    Measurement range

    0 ... 100 %RH

    ​Accuracy ​±3 %RH within 0 ... 90 %RH

    ​±5 %RH within 90 ... 100 %RH


    ​Operating temperature -52 ... +60 °C (-60 ... +140 °F)

    ​Storage temperature ​​-60 ... +70 °C (-76 ... +158 °F)

    ​Input voltage ​5 … 32 VDC

    ​Typical power consumption ​3 mA at 12 VDC (with defaults)

    ​Heating voltage
    ​5 … 32 VDC (or AC, max. 30 VRMS)

    ​Serial data interface ​SDI-12, RS232, RS485, RS422, USB adapter

    ​Housing ​IP65

    ​Housing with mounting kit ​IP66

    ​Electromagnetic compatibility ​complies with EMC standard EN61326-1; Industrial Environment

    ​IEC standards ​IEC 60945/61000-4-2 … 61000-4-6


    Due to the nature of the phenomenon, deviations caused by spatial variations may exist in precipitation readings, especially in short time scale. The accuracy specification does not include possible wind induced error.

    For complete specifications, please see the datasheet or user guide in "Documents".

    Related Services
    • Repair Services 
    • Vaisala repair services include fault tracing and repair or replacement of failed components, as well as final testing to ensure your equipment is functioning properly. Repairs can be carried out on site or at one of our service centers.
    • Service Center Calibration 
    • Regular calibration ensures that your Vaisala equipment continues to provide accurate, high-quality data. We offer traceable, standards-compliant calibration services for almost all Vaisala products and partner with world-class couriers for rapid, trouble-free return of your equipment.
    • Spare Parts 
    • Get rapid access to the spare parts you need to maximize the uptime of your equipment and ensure reliable and accurate operation. In addition to standard spare part delivery, we also offer an express service where parts are shipped within one business day.
    • Warranty 
    • All Vaisala products and services are covered by a 12-month warranty as standard, with selected products covered for up to 24 months. During this period you benefit from free repair or replacement of faulty equipment. With Vaisala’s extended warranty, you get free repair or replacement for five years.