Committed to quality from the conception stage 


Wind sensor accuracy

The accuracy of ultrasonic wind sensors is characterised by the stability of results over time, without any maintenance needed. 

The accuracy of LCJ Capteurs sonic wind vane-anemometers has been tested in wind tunnels by numerous laboratories: École Centrale de Nantes, LCPC, CERN, Météo-France, KNMI, etc…

Each sensor is tested before leaving the factory 


Test bench in wind tunnel

The capacity of our wind tunnel enables measurements from 2m/s to 40m/s (4 knots to 80 knots). 

A servo mechanism enables the sensor rotation to be controlled by a PC. It enables simultaneous verification of both the wind vane and anemometer functions. 

Each sensor is tested in our own wind tunnel at 19 knots. 
Random samples are tested at 4, 10, 15, 30, 40 and 80 knots. 

We are able to establish test reports conducted with different specific wind speeds. 

Examples of calibration tests:

Temperature test bench

Each sensor is tested in our own environmental test chamber from -10°C to +50°C for the CV3F and from -15°C to +55°C for the CV7.
Measurements are taken at extreme temperatures and at +20°C. 

Temperature progression variation is 2°C per minute, then stabilisation for one hour. 

Random samples are submitted to tests on 5 measurement points, as well as for thermal shocks. 

EMC compliance 

LCJ Capteurs products comply with CE standards. 

The wind sensor range EMC compliance is approved by an independent laboratory. 

wind sensors field LCJ Capteurs

Field testing of the sensors 

The CV3F was the first ultrasonic sensor sold by LCJ CAPTEURS in 2000. It has proved its reliability by having a one year in-field test mounted on the rear stand of French trawlers from Boulogne and Lorient, fishing in the North Sea and Irish Seas. Since 2001, the CV3F sensor has proved its resistance to environmental conditions: sea spray, vibrations and waves. 

In rough weather, the absence of mobile parts highly contributes to the wind sensor’s longevity. 

Over the years, many regatta sailors and offshore racers have put their trust in the wind measurement technology developed by LCJ Capteurs. In 2007, the CV7 aerial sensor appeared on the market, in order to meet their requirements for accuracy and reactivity in low wind conditions, even when heeling.  

Multi-purpose sensors 

On the market since 2007, the sensors of the CV7 and SONIC-ANEMO ranges have also been tried and tested in numerous terrestrial domains, such as industry, safety, leisure parks, fire fighting, wind energy, or also embedded in-cars, drones and parachute released beacons.  

LCJ Capteurs is the leading manufacturer providing self-powered, sonic weathervane-anemometers to meet the new requirements of connected devices (IOT)