Vaisala WXT520 Weather Sensor

Multi-Parameter Weather Sensor

Compatible with the following Aeroqual products:
  • AQM 65 compact air quality station
  • Dust Sentry dust and particulate monitor
  • Dust Profiler dust and particulate counter

The WXT520 is  a low maintenance weather station able to measure:

  • Wind speed
  • Wind direction
  • Air temperature
  • Relative humidity (RH)
  • Barometric pressure
  • Precipitation (rainfall)


The Vaisala Weather Transmitter WXT520 measures barometric pressure, humidity, precipitation, temperature, and wind speed and direction.

To measure wind speed and direction, the WXT520 has the Vaisala WINDCAP® Sensor that uses ultrasound to determine horizontal wind speed and direction.

The array of three equally spaced transducers on a horizontal plane is a Vaisala specific design. Barometric
pressure, temperature, and humidity measurements are combined in the PTU module using capacitive  measurement for each parameter.

The WXT520 precipitation measurement is based on the unique Vaisala RAINCAP® Sensor, which detects the impact of individual rain drops. The signals exerting from the impacts are proportional

It is easy to change the module without any contact with the sensors. The WXT520 is immune to flooding, clogging, wetting, and evaporation losses in the rain measurement.

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