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Vaisala WINDCAP® Ultrasonic Wind Sensor WMT700

WINDCAP® Ultrasonic Wind Sensor WMT700 reliable ultrasonic anemometer for surface wind

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    • WMO and ICAO compliant
    • Measurement range up to 75 m/s
    • Data output rate 0.25 s
    • Heating up to 250 W
    • Body heating option available
    • Self-diagnostics and validation
    • Max. 3600-second average
    • IP66 and IP67
    • Maintenance-free
    • Wind gust calculated according to the WMO guidelines
    • Data format outputs: polar coordinates and vectors
    • Fully compensates effects of temperature, humidity and pressure
    • Three-transducer layout provides accurate data
    Technical Specifications

     Technical Specifications

    Wind Speed

    Measurement range
    ​0...40 m/s
    ​0...65 m/s
    ​0...75 m/s
    ​Accuracy ​+/- 0.1 m/s or 2 % of reading, whichever is greater
    ​Starting threshold ​0.01 m/s
    ​Resolution ​0.01 m/s

    Wind direction

    ​Measurement range 0...360°
    ​Accuracy ​±2°
    ​Starting threshold ​0.1 m/s
    ​Resolution ​0.01°


    Communication interface
    communication (data)
    ​RS485, RS422, RS232, SDI-12
    communication (service)
    analog output wind speed 
    ​voltage, current, frequency
    analog output wind direction
    ​voltage, current, potentiometer
    ​Communication profile
    ​WMT70, ASCII, NMEA, SDI12, ASOS, MES 12, customized
    ​Baud rate ​300, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
    ​Available averages ​max. 3600 s
    ​Readout up-date interval ​max. 4 Hz
    digital outputs
    ​m/s, knots, mph, km/h
    analog outputs
    ​V, mA
    ​              frequency outputs ​Hz (push-pull, pull-down, pull-up)
    ​Operating mode ​automatic or poll mode
    ​Virtual temperature ​degrees Celcius


    ​Heating ​0 or 30 or 150 or 250 W
    ​-10 ... +60 or -40 ... +60 or -55 ... +70 °C
    ​-60 ... +80 °C
    ​Operating voltage ​9 ...36 VDC
    ​Heating voltage ​24 ...36 VDC
    ​IP class ​IP66 and IP67
    body, arms
    ​stainless steel AISI316
    For complete specifications, please see the datasheet or user guide in "Documents".
    Related Services
    • Service Center Calibration 
    • 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.
    • 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.