FURUNO CV3Fm6 Ultrasonic Wind Vane-Anemometer Instructions

: June 6, 2024
: FURUNO

Table of Contents

FURUNO CV3Fm6 Ultrasonic Wind Vane-Anemometer
Operating principle
Equipment supplied
Electrical characteristics
Mechanical characteristics (mm)
Interconnections
Output messages
CV3F-WindyPlug
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

FURUNO CV3Fm6 Ultrasonic Wind Vane-Anemometer

CV3F is a new generation wind measurement sensor providing, on a standardized series electric line, the values from the wind module in knots or meters per second, relative wind direction, and its temperature in degrees C. The sensor can be used directly with a PC-type computer or read by modern repeaters with standard NMEA0183 input.

Operating principle

Sound, ultrasound, is carried by the movement of the fluid through which it passes. Four electro-acoustic transducers communicate in twos using ultra- sound signals to determine, in two orthogonal axes, the differences in transit times of the waves, induced by the airflow. The measurements are used in an integrated computer to establish the wind module and its direction relative to a reference axis.
The measurement of temperature serves to refine the calibration. The method provides a sensitivity of 0.5 knots, a range of up to 100 knots, and excellent linearity.

Equipment supplied

CV3F sensor head and 300mm pole
2 stainless steel brackets
25 m coaxial cable fitted with a connector
Box for connecting power supply and display reader
Installation instructions

Electrical characteristics

Digital output signals:

NMEA0183, MWV: 5 digits for the module, 4 digits for the direction, 1 digit for validity state.
NMEA0183, XDR: 4 digits for the temperature.BARO Option

NMEA0183, MDA: 4 digits for the pressure, 4 digits for the temperature. NMEA0183, XDR: 4 digits for the temperature, 4 digits for the atmospheric pressure.

Wind module resolution: 0.1 knots
Wind module dynamics: 0.5 to 99.5 knots
Resolution: 1 degree
Sensitivity to direction: + / 1.5 degrees
Supply: 9,5 to 14 V DC
Consumption: 25 milliamperes
Operating temperature: -10°C (without ice) to +50°C

LCJ CAPTEURS – 29 Allée des Cinq Continents – Z.A. Le Chêne Ferré – 44120 VERTOU – France Tel: +33 (0)2 40 05 08 55 – Email: lcjcapteurs@lcjcapteurs.com – Website : www.lcjcapteurs.com

Mechanical characteristics (mm)

Installation

Find a place free from obstructions to the wind. The CV3F sensor can be fitted using the two stainless steel brackets to the side or top of the mast as shown. Set up the alignment mark parallel to the axis of the vessel pointing towards the bow or, when it is a land installation towards a reference direction, as a rule, true north. Better precision is obtained by taking the struts linking the two halves of the sensor as an axis for the alignment. Join the coaxial cable to the sensor as in the diagram below and lead the cable to the site for the display unit. Avoid as far as possible closeness to cables which might induce high levels of radio-electrical interference.

Connection in the sensor tube:

The plug at the end of the tube has a hole to allow the passage of coaxial cable RG58 and a small hole (1.5mm), sufficient to assure natural weatherproofing and at the same time to stabilize the internal and external pressures on CV3F. During installation, care must be taken to ensure that this hole is not closed and to be left in the same atmospheric pressure as the sensor itself.
LCJ CAPTEURS – 29 Allée des Cinq Continents – Z.A. Le Chêne Ferré – 44120 VERTOU – France
Tel: +33 (0)2 40 05 08 55 – Email: lcjcapteurs@lcjcapteurs.com – Website : www.lcjcapteurs.com

Interconnections

Connect the 12V (9,5 to 14VDC) supply. Blue – / Brown +
Connect the coaxial cable of the CV3F sensor correctly connecting the core and screening.
Connect the display receiver equipment to the NMEA connector:
for the COM(1) port of an RS232 computer
connect b1 to Rx terminal 2 of COM1
connect b3 to 0V terminal 5 of COM1
if necessary, connect terminals 6 and 7 of COM1 together.
for a floating RS422 standardized NMEA0183 input

Make sure in advance that none of the receiver inputs is connected to 0 Volts, otherwise use the RS232 type connection.

connect b1 to +Ve ( or In +) or A of the NMEA display connect b2 to -Ve ( or In -) or B of the NMEA display

The b1 b2 output supplies a differential voltage greater than 2 Volts at a load of 4 mA which allows two receivers to be controlled simultaneously.