Vaisala

WMT700

WINDCAP® ultrasonic wind sensor for professional use

WMT700

A robust ultrasonic anemometer for surface wind measurement, one of the key parameters in meteorology and aviation. It measures speed and direction from ultrasound transit time across three measurement paths at 60°, with no moving parts and no periodic maintenance. It meets the WMO-No. 8 guide and ICAO requirements, with four models covering ranges up to 90 m/s and heating up to 250 W for icing climates.

Download datasheet (PDF)

Specifications

Technical specifications

Wind speed range
0–40 / 0–65 / 0–75 / 0–90 m/s según modelo (WMT701–WMT704)
Speed accuracy
±0,1 m/s o 2 % de lectura (0–75 m/s); umbral de arranque 0,01 m/s
Wind direction
0–360°; precisión ±2°; resolución 0,01°; respuesta 250 ms
Operating temperature
-10…+60 °C, -40…+60 °C o -55…+70 °C según configuración
Housing rating
IP66 e IP67; cuerpo y brazos de acero inoxidable AISI 316
Heating
0 / 30 / 150 / 250 W (transductores, brazos y cuerpo, según variante)
Outputs
RS-485/422/232, SDI-12; analógicas V / mA / frecuencia; perfiles ASCII, NMEA, ASOS

Features

Key features

  • Meets the WMO-No. 8 guide (7th edition) and ICAO requirements
  • No moving parts: full stainless-steel structure with welded arms, resistant to contamination and corrosion
  • Three transducers and six measurement paths at 60° for accurate, redundant data
  • Fully compensates the effects of temperature, humidity, and pressure
  • Self-diagnostics and measurement validation as standard; gust calculated per WMO guidelines
  • Averages up to 3,600 s with polar-coordinate and vector outputs
  • Heated models with thermostatic control for freezing rain and snow
  • DNV GL type examination certificate for maritime applications

Applications

Typical applications

  • Airports and civil aviation
  • Synoptic weather networks
  • Maritime and offshore operations, including helidecks
  • Wind energy
  • Railway wind monitoring

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