WMO and ICAO compliant, robust and reliable ultrasonic anemometer
Robust and reliable ultrasonic anemometer for wind measurement for meteorology, aviation, maritime and wind energy applications. The WMT700 uses ultrasound to determine horizontal wind speed and direction. The measurement is based on transit time, the time it takes for the ultrasound to travel from one transducer to another, depending on the wind speed.
The WMT700 has a durable full stainless steel structure with welded arms, clear north indication, and one point, quick bayonet-style mounting. It has no moving parts, and it is resistant to natural contamination and corrosion(such as salt, dust, or sand).
Accurate measurement of wind speed
Patented Vaisala WINDCAP wind measurement technology that ensures accurate results in all wind directions. Self-diagnostics and validation of measurement are standard features. With latest WMT704, it provides wind measurement up to 90 m/s.
Heated models designed for cold climates
Available with four different heating options that shield the transducers, and/or the sensor arm, and/or the sensor body from ice and snow build-up in cold climates.
|0...40 m/s (89 mph)|
|0...65 m/s (145 mph)|
|0...75 m/s (168 mph)|
|0...90 m/s (201 mph)|
|Accuracy||0 … 75 m/s (168 mph): ±0.1 m/s (0.2 mph) or 2 % of reading, whichever is greater 75 … 90 m/s (201 mph): ±5 % of reading|
|Starting threshold ||0.01 m/s (0.0223 mph)|
|Resolution||0.01 m/s (0.0223 mph)|
|Starting threshold||0.1 m/s (0.2 mph)|
|COM1: RS‑485 COM2: RS‑485, RS‑422, RS‑232, SDI‑12|
|Voltage, current, frequency|
|Voltage, current, potentiometer|
|Communication profiles||WMT700, WS425 ASCII, NMEA Standard and Extended (version 0183),SDI-12 (version 1.3),WS425 ASOS, ROSA MES12, customized|
|Bit rate||300, 1200, 2400, 4800, 9600, 19200, 38400, 57600, or 115200|
|Available averages||max. 3 600 s|
|Readout update interval||4 Hz and 8 Hz|
|m/s, knots, mph, km/h, V, mA, Hz|
|Operating mode||Automatic message or poll mode|
|Virtual temperature||Celsius degrees|
|Heating||0 W, 30 W, 150 W, or 250 W|
|-10 … +60 °C (+14 … +140 °F) -40 °C … +60 °C (-40 … +140 °F) -55 …+70 °C (-67 …+158 °F)|
|-60 …+80 °C (-76 … +176 °F)|
|Operating voltage||9 … 36 VDC (absolute max. 40 VDC)|
|Heating voltage||24 … 36 VDC (absolute max. 40 VDC|
|IP rating||IP66 and IP67|
Materials - Body and arms, mounting kit
|Stainless steel AISI 316|