Rugged ultrasonic wind sensor delivering highly accurate wind speed and direction measurements in all weather conditions. WMO, ICAO, and CIMO compliant, maintenance-free, and built for meteorology, aviation, maritime, and wind energy applications.
The Vaisala WINDCAP® WMT700 ultrasonic wind sensor provides precise and reliable surface wind measurements. With no moving parts and a durable stainless-steel design, it ensures long-term maintenance-free operation even under the harshest conditions. Fully compliant with WMO, ICAO, and CIMO standards, it is trusted by leading meteorological and aviation organizations worldwide.
Applications
The WMT700 series is suitable for professional use in meteorology, aviation, maritime operations, and wind energy. It delivers accurate measurements where traditional mechanical instruments fail, including environments with heavy rain, icing, strong winds, sand, dust, and offshore maritime installations.
Design and Installation
The sensor features a robust stainless steel structure with welded arms, self-diagnostics, and quick one-point mounting. Optional heaters in the transducers, arms, and body prevent freezing precipitation, ensuring reliable performance in extreme cold climates. Bird prevention accessories are also available for uninterrupted operation.
Main Advantages
- WMO, ICAO, and CIMO compliant performance
- Accurate wind speed and direction up to 90 m/s
- Durable stainless steel structure, resistant to corrosion and contamination
- No moving parts – maintenance-free operation
- Optional heating (up to 250 W) prevents ice and snow build-up
- Multiple digital and analog output options for easy integration
Usage Guidelines
- Install at designated meteorological or operational sites with clear exposure to wind
- Select appropriate heating configuration for cold or freezing conditions
- Connect via RS-485, RS-422, RS-232, or SDI-12 communication protocols
- Compatible with SCADA, aviation, and maritime monitoring systems
- Regular functional checks are recommended, though routine maintenance is not required
Technical Specifications
| Parameter | Specification |
|---|---|
| Measurement Principle | Ultrasonic transit time |
| Wind Speed Range | 0 … 90 m/s (model dependent) |
| Wind Speed Accuracy | 0–75 m/s: ±0.1 m/s or 2% of reading; 75–90 m/s: ±5% of reading |
| Wind Speed Resolution | 0.01 m/s |
| Wind Direction Range | 0 … 360° |
| Wind Direction Accuracy | ±2° |
| Response Time | 250 ms |
| Operating Voltage | 9 … 36 V DC (max. 40 V DC) |
| Heating Power Options | 0 W, 30 W, 150 W, 250 W |
| Heating Voltage | 24 … 36 V DC |
| Operating Temperature | -55 … +70 °C (depending on model and heating) |
| Storage Temperature | -60 … +80 °C |
| IP Rating | IP66 & IP67 |
| Dimensions | 348 × 250 × 285 mm |
| Weight | 1.8 kg |
| Materials | Stainless steel AISI 316 (body & arms), silicone (transducers) |
| Digital Outputs | RS-485, RS-422, RS-232, SDI-12 |
| Analog Outputs | Voltage, current, frequency, potentiometer |
| Compliance | WMO CIMO Guide, ICAO, EMC Directive, IEC 60945, CE, UKCA |
| Brand | Vaisala |
