| |  All-in-one weather transmitter - WXT520
Overview With the world becoming increasingly sensitive to weather and climate, it is important to measure the
weather accurately. The Vaisala Weather Transmitter WXT520 offers the solution to measure barometric
pressure, humidity, precipitation, temperature, and wind speed and direction - all with one instrument!
Features ► Measures 6 most essential weather parameters as WXT510
► Accurate and stable
► 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
Compact and lightweight, the WXT520 is suitable for weather stations, dense networks, buildings, golf courses, marinas, harbors, and hotels - almost anywhere where real time weather data is needed. Accurate and reliable data provided to you early enough can increase safety to life and property.
How does WXT520 do it?
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, which ensures accurate wind measurement from any horizontal wind direction without blind angles and corrupted readings.
Barometric pressure, temperature, and humidity measurements are combined in the PTU module using capacitive measurement for each parameter. It is easy to change the module without any contact with the sensors. Precipitation measurement is based on the Vaisala RAINCAP® sensor. For details, please see the next page.
 Specifications Measurement | Units | Operational Range | Resolution | Accuracy | Specification Range | Wind Speed | m/s | 0-60 m/s | 0.01 | 0 ... 35 m/s ±0.3 m/s or ±3%, whichever is greater, 36 ... 60 m/s ±5% | Wind Direction | Deg | 0-360° | - | ±3° | 250 ms response time | Rainfall | cumulative accumulation after latest automatic or manual reset | | mm | 0.01 mm, 0.001 inches | 5%* | - | - | Rainfall duration | counting each ten-second increment when droplet detected | | s | - | 10 s | - | - | Rain intensity | one-minute running average in ten-second steps | | mm/hinches/h | 0-200 mm/h (broader range with reduced accuracy | 0.1 mm/h, 0.01 inches/h | - | 0-200 mm/h (broader range with reduced accuracy | Barometric pressure | hPa | 600 ... 1100 hPa | - | ±0.5 hPa at 0-30 °C (+32- +86 °F)
±1 hPa at -52- +60 °C (-60- +140 °F) | Air temperature | °C | -52- +60°C (-60- +140°F) | - | Accuracy at +20 °C (+68°F) ±0.3 °C (±0.5°F) | Relative humidity | %RH | 0 ... 100 %RH | - | ±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 adapterr | 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. |
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