Airmar Weather Station

Discussion in 'General Discussion' started by Jcclark85, Jul 31, 2021.

  1. Jcclark85

    Jcclark85 New Member

    11
    Dec 16, 2019
    2002 Sundancer 360
    8.1S Horizons
    Hi all, I wanted to see if anyone has installed an Airmar weather station on top of their radar arch and networked it into their MFD? I have Raymarine Axioms installed and I like the idea of knowing wind direction amongst other things tied into MFD for nights out at anchor or when sitting tied up in the marina. I know I’m sure I’ll hear about the use of a flag or pennant but interested in the technology. I originally looked at Raymarine I-40 wind anemometer but haven’t read the greatest reviews on it but it’s what Raymarine recommends for powerboats. Appreciate all the help!
     
  2. Irie308

    Irie308 Well-Known Member SILVER Sponsor

    May 28, 2013
    CT
    2004 420 Sedan Bridge, GHS Hydraulic Lift
    Dual Raymarine E120W
    AB Mares 10 VSX with 30 hp Tohatsu
    Cummins 450C 8.3 L Turbocharged
    Following. I’m considering this as well. Would be nice like you said to have wind direction and speed.
     
  3. alnav

    alnav Well-Known Member PLATINUM Sponsor

    Sep 16, 2009
    West River, MD
    40 MY
    QSB 425
    I've got a 120WX I'm getting ready to install. I've tested it and it works fine. Only connection needed is via NMEA 2000 which will supply power and bring back the data. In addition to relative wind speed and direction, the unit has temperature and barometric sensors; a humidity sensor is optional.
    The only difference between the 120WX and the more expensive unit is the lack of an internal compass. There's no need for it in my opinion as long as you already have a heading sensor since the nav system will convert the relative wind the unit transmits to true.
     
  4. bobeast

    bobeast Dance the Tide SILVER Sponsor

    Oct 22, 2017
    Isleton, CA
    2002 310DA
    350 MPI w/V-drives
    I have the Navico 120WX Ultrasonic Wind Sensor with the optional humidity sensor. (they are all made by Airmar as far as I can tell). Garmin has some really nice pages to display its data. Can't speak for other MFDs.
     
  5. Jcclark85

    Jcclark85 New Member

    11
    Dec 16, 2019
    2002 Sundancer 360
    8.1S Horizons
    Thanks for the response, What Company is your MFD and I’ve read about MFDs not able to calibrate the station, does the 120wx need to be calibrated?
     
  6. Jcclark85

    Jcclark85 New Member

    11
    Dec 16, 2019
    2002 Sundancer 360
    8.1S Horizons
    Bobeast, is your station pretty accurate? Any issues if your up at speed?
     
  7. bobeast

    bobeast Dance the Tide SILVER Sponsor

    Oct 22, 2017
    Isleton, CA
    2002 310DA
    350 MPI w/V-drives
    It seems to be, but then I don't know how I would know for sure. The angle does seem to coincide with my finger in the air test. That said, I do have a heading sensor on my NMEA 2000 bus, which I believe is essential unless you buy the higher end unit with the built-in compass.

    The data coming off the sensor is relative to your bow (if mounted correctly), and knows nothing about north vs south. As such, wind angle should always be correct, but wind direction would require data from a heading sensor. It is up to your MFD to take both inputs and do the math to accurately calculate true wind direction.

    In terms of speed, it tends to roughly match my hand-held wind gauge when stationary, and I do see it change in the right direction (no pun intended), when I am underway. For example, the apparent wind speed value increases when heading directly into the wind, while true wind speed remains relatively constant.
     
    Last edited: Aug 2, 2021

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