Description
LCJ CV7-BARO3 ultrasonic wind sensor
LCJ CV7-BARO3 is a short-arm masthead ultrasonic wind-sensor package with a 25m cable and BARO3 barometric junction-box arrangement for NMEA 0183 integration. The CV7 family contains several interface versions, so the suffix should be matched to the vessel instruments rather than treated as a minor accessory choice. F&C Marine can help confirm the complete wind and pressure installation before supply.
Wind and barometric data
The CV7 measures wind electronically without conventional cups or a vane, while the BARO3 arrangement adds the listed barometric-pressure interface. The sensor still requires clean airflow and correct orientation. Position it where mast structures, aerials and rigging have the least practical influence, and use manufacturer guidance when aligning the sensor. Pressure data and wind data should both be checked at the intended receiving equipment during commissioning.
NMEA 0183 and BARO3 integration
Identify the receiving instrument, display, logger or navigation system before installation and confirm how the NMEA 0183 data will be connected. Check polarity, data rates and the number of devices expected to receive the information. The BARO3 junction arrangement should be wired according to the applicable LCJ documentation. Existing splices or unlabelled connections should be investigated rather than incorporated blindly into the new installation.
Masthead mounting and cable route
Plan the 25m cable route before installing the sensor. Protect the cable from chafe, crushing, sharp edges and water ingress, particularly at mast and deck penetrations. If replacing an older wind instrument, inspect the mounting bracket and cable route rather than assuming they remain suitable. Photograph and label existing connections before removal. A damaged mast cable or corroded junction can cause intermittent data even after the masthead sensor is renewed.
Commissioning wind and pressure information
After installation, verify plausible wind speed, wind direction and barometric pressure at the receiving equipment. Check the physical orientation of the sensor and compare the data at each device that uses it. If wind information is present but pressure is missing, or vice versa, trace the relevant interface and BARO3 wiring before treating the sensor as faulty. Record the final wiring and model references for future service.
Maintenance and fault finding
Inspect the sensor, masthead mount, exposed cable, BARO3 enclosure and accessible connections for damage, corrosion or moisture. If readings become intermittent, check supply voltage and data wiring at both the sensor side and receiving equipment. An ultrasonic sensor has no conventional cup or vane bearings, but electrical and installation faults can still occur. Good records of the junction-box wiring and cable route can save significant time during later troubleshooting.
Documentation and related guidance
For manufacturer information, see LCJ Capteurs products and LCJ support downloads. Use current LCJ documentation as the final reference for BARO3 wiring, NMEA 0183 and mounting. F&C Marine also provides an ultrasonic wind-sensor guide and the Marine Electronics Knowledge Base.
Official manuals, datasheets and brochures
Related products
- LCJ CV7-WINDYPLUG – Short-Arm Ultrasonic Wind Sensor with Barometer and NMEA 2000 Interface
- LCJ CV7-SIL – Short-Arm Ultrasonic Wind Sensor for SILVA, Nexus NX2 and Furuno FI30
- LCJ CV7-STBG – Short-Arm Ultrasonic Wind Sensor with Universal STBG Interface
Related technical resources
Before ordering LCJ CV7-BARO3
Send the vessel type, existing wind and pressure instruments, photographs of the masthead and junction wiring, cable-route details, supply voltage and the make and model of receiving equipment. If replacing a fault, include symptoms and tests already completed. F&C Marine can then help confirm whether LCJ CV7-BARO3 is the correct package and identify any mounting, interface or installation requirements before quotation.












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