What makes FT ultrasonic wind sensors unique is our use of Acoustic Resonance Technology. Invented by our Executive Chairman, Dr Savvas Kapartis, and patented in 1997, Acu-Res® is a solid-state (no moving parts) technology for measuring wind speed and direction. It uses an acoustic (ultrasonic) wave which is resonated inside a small cavity.

A strong resonating sound wave in a small space provides a large signal that is easy to measure. Acu-Res® has a signal to noise ratio more than 40dB stronger than other ultrasonic technologies.

Using Acu-Res® technology results in a small, easily heated sensor which operates reliably, even under extreme weather conditions. The sensor’s small size means that power is used very efficiently ensuring that the sensor can stay ice-free. Small in size also means light in weight. The maximum weight of an FT7 Series sensor is 380g, and yet the hard anodised aluminium body makes the sensor incredibly strong.

The FT7 Series are probably the most tested wind sensors in the world. They have passed over 30 independent tests including sand, dust, ice, vibration, drop, corrosion, hail and lightning protection.

Essentially, Acu-Res® sets FT sensors apart from mechanical and other ultrasonic wind sensing technologies to give a more robust and reliable measurement solution.