CV7 – A wide range of ultrasonic wind sensors

CV7 – A wide range of ultrasonic wind sensors

CV7: The second generation ultrasonic wind vane-anemometer from LCJ Capteurs

Created in 1999, the creator of LCJ Capteurs, Mr. Lamiraux, set himself the mission of creating a static wind sensor designed to withstand marine conditions. After two years of research and marketing, the first patent in 2001 allowed the creation of the CV3F ultrasonic wind vane-anemometer.

The feedback was very good! He succeeded in his challenge to offer a sensor :

  • marinized,
  • compact,
  • light,
  • energy-efficient,
  • and affordable for the general public.
CV3F - workboats

The birth of the CV7 range with a new patent

Since 2007, the CV7 ultrasonic wind sensor has been evolving

CV7-V ultrasonic-wind-sensor

If the CV3F has proven itself by its reliability on the professional boat market. It reveals some imperfections especially during rainy weather and on stable vessels.

For this reason, a second patent corrects and improves the first one, proposing a new version of the technology. In 2007, the new ultrasonic wind sensor from LCJ Capteurs is called the CV7, the number 7 evoking the year of its release.

The innovation consists in the geometry of the measurement vectors. Until now, the CV3F ultrasonic transducers communicate crosswise, with 2 vectors. The CV7 ultrasonic wind vane-anemometer works with a square geometry since it has 4 vectors. This allows to reduce the measurement inaccuracy while keeping the sensor dimensions very small. To improve the evacuation of possible water drops from the measuring window, the reflector part is now conical.

Different supports: from oblique to carbon.

Over the years, it is necessary that the installation of an ultrasonic wind sensor is no longer a hindrance. For this reason, LCJ Capteurs offers several supports for any type of installation.

The CV7 ultrasonic wind vane-anemometer: standard model for masthead mounting

The CV7 ultrasonic anemometer is delivered with its oblique support, this standard model is specialized for sailboats. Its oblique support measures 31 cm. Installed at an angle, this allows the sensor not to be hindered by another instrument that could alter the accuracy of the sensor.

CV7 wind vane anemometer

The CV7-V ultrasonic wind vane-anemometer: a vertical arm for easy installation

cv7-v ultrasonic anemometer

The CV7-V comes with its own vertical support, hence the name “V”. Its arm is made of aluminum and measures 31 cm. This design is versatile and adapts to all types of conditions: from boats of all kinds to land-based infrastructures such as harbors or semaphores.

The CV7-C ultrasonic wind sensor: for sailing performance

The CV7-C has a 70 cm long carbon arm from which it gets its name “C”, which allows the sensor head to be out of upwash effect. Upwash is defined as the upward movement of air from the force of the wind in front of the sails and mast that passes over the masthead. This effect will measure the apparent wind against the true wind and affect the accuracy of the wind measurement.

For this reason, the CV7-C ultrasonic wind sensor is primarily intended for racing. In addition, the sensor has a better reactivity compared to the classic one, since its output is at 4 Hz compared to 2 Hz of the CV7.

It is compatible with the RM-SMART100 rotating mast angle sensor.

CV7-C-ultrasonic wind sensor

Accessories and configurations to suit your needs

The CV7SF2 wireless ultrasonic wind sensor: the CV7 is also available wireless

The CV7SF2 ultrasonic wind vane-anemometer is the wireless solution for your navigation system. It has the same technology as a simple CV7 but this sensor is self-powered with its own photovoltaic panel. The receiver that accompanies the CV7SF2 draws its power externally. Its autonomy reaches 35 days at 1 Hz in total darkness!

It is mounted on an aluminum arm of 31 cm.

Its technology has been nominated by the jury for the Dame Award 2013.

CV7SF2 - wireless ultrasonic wind sensor
CV7-HR capteur de vent skipper

The CV7-HR high-resolution static wind vane-anemometer is the latest development from LCJ Capteurs. Also equipped with a 70 cm carbon arm, its use is intended for high competition. Its flow is even more reactive with a technology that allows to perceive the wind data at 120 Hz.

CV7-STBG : new with old with B&G or Raymarine mastheads !

The STBG box is an option that works as a universal interface. This box provides communication between the ultrasonic wind sensor and your display regardless of the model and brand.

This interface converts the sensor’s wind angle and wind speed data into an analog format.

The STBG option is compatible with the wide range of CV7, CV7-V, CV7-C, RM-SMART100.

CV7-STBG anémomètre à ultrasons non compatible NMEA

B&G H1000

CV7 STBG B&G H2000

B&G H2000

display autohelm st50 wind


B&G Network Wind

B&G Network Wind

Displays STBG ST60+ Ray Marine compatible

Raymarine ST60+

Instruments compatible with the STBG option:

  • B&G (Hornet IV, Hydra, Hercules, Network, H1000, H3000, H5000),
  • Raymarine (ST60, SQ60+, ST70, i series, iTC5),
  • Autohelm, ST50
  • Navico, WD200,
  • Microdata,
  • Stowe (Navigator, Stowe Dataline, Stowe Micro Range and Dataline X
  • Simrad, IS11
  • VDO

If you do not recognize your instrumentation model, programming is possible in the LCJ Capteurs workshops.

CV7-SIL: Don’t replace your old navigation system

The CV7-SIL sonic airplane has the same characteristics as the simple CV7 ultrasonic wind vane-anemometer. At least in form, as far as its configuration is concerned, it allows you to make good savings. Indeed, its SIL option allows it to replace the old mastheads without changing the navigation unit:

  • Furuno© FI30 / FI50 : Wind Data FI301, Server FI30
  • SILVA©
  • NEXUS© : Wind Data NX2, Server NX2
  • Garmin© G-Wind
  • B&G© : MHU213

The RM-SMART100: the angle sensor for rotating masts

rm smart100 rotating mat

This SMART100 static angle sensor is delivered with the RM-Interface NMEA2000 computer or with the B&G and Raymarine compatible STBG computer. This mast angle sensor controls mast movement precisely to improve safety and operational efficiency. It is accompanied by the RM (Rotating mast) part which is a NMEA2000® computer for rotating mast.

It works with all the wired sensors of the CV7 range.

This sensor has a magnetic system to avoid mechanical problems due to wear.

“Plug and Play” accessories


The BaroPlug is an atmospheric pressure and ambient temperature sensor for NMEA2000® instruments. This accessory is easy to install with its MICRO C male connector for direct connection to a NMEA2000® bus.

Its technology was voted “Coup de Coeur” by the jury at the Dame Award 2014.

temperature sensor nmea2000
accessoire pour anémomètre à ultrasons


The WindyPlug is a “Plug and Play”” accessory that accompanies the CV7 ultrasonic wind sensors. Its function is to transmit all data received by the sensor on the NMEA2000®․ network.

Like the BaroPlug, it has a male MICRO C connector to connect directly to a NMEA2000® bus.


The Baro3 option accompanies our ultrasonic wind sensors to adapt to the specific constraints of sailing boats. This 12 V DC terminal block is equipped with a barometer to obtain all the data on atmospheric pressure on your navigation station.

CV7 wind vane anemometer

Mainly for the navy, and the land?

The wind data from the sensors for the marine range has an NMEA0183 or NMEA2000 output format. However, the terrestrial range does not have this specialized output format for marine use. There are two exceptions, the CV7-E and CV7-OEM, which are mainly intended for the land sector for other applications. The products intended for the land sector are mostly called SONIC-ANEMO.

The CV7-E has the same transmission rate as the CV7-C, i.e. 4 Hz for a 60 Hz measurement. Its difference compared to the latter, its arm is out of aluminium of 31 cm.

While the CV7-OEM, is an ultrasonic wind sensor that does not come with a mounting arm and cable. In fact, it has a 35 cm cable for easy integration with other products. LCJ Capteurs also offers a combination of the two sensors with the CV7-E and CV7-OEM, the CV7-E-OEM. The high-speed sensor CV7-E-OEM is responsive and can be integrated into new technologies very quickly.