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VP2 - wind direction issue


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Posted
  • Location: Dead Centre of the Vale of Clwyd
  • Weather Preferences: Cold Sancerre.
  • Location: Dead Centre of the Vale of Clwyd

    OK - latest VP2 problem. Despite seeing my direction vane moving around, I have been recording due North constantly for 24 hours. Wind speed seems fine. Anyone else had this problem?

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    Posted
  • Location: The Purbeck Microclimate, Dorset.
  • Weather Preferences: Gales, T-storms, Heavy Rain, Heat, Cold - Love it all.
  • Location: The Purbeck Microclimate, Dorset.
    5 hours ago, in the vale said:

    OK - latest VP2 problem. Despite seeing my direction vane moving around, I have been recording due North constantly for 24 hours. Wind speed seems fine. Anyone else had this problem?

    How old is your anemometer? Older versions use a reed switch. Newer models have potentiometers.

    I actually had 2 new ones fail in less than 18 months. Thankfully, the 3rd one has been going fine.

    What happened with mine was, wind was blowing from W for example, it would flick back to North and then back to W again. It would just keep doing that, and maybe rectify itself for a day or two, before repeating the same thing.

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    On VP2 systems, cable damage involving the direction conductor will cause the direction to show North, either constantly or, with intermittent wire contact, from time to time;

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    WWW.MANULA.COM

    Overview This topic covers issues and faults with readings of wind speed or wind direction. These are often also referred to as anemometer issues. (Strictly...

     

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    Posted
  • Location: Dead Centre of the Vale of Clwyd
  • Weather Preferences: Cold Sancerre.
  • Location: Dead Centre of the Vale of Clwyd
    9 hours ago, Mapantz said:

    How old is your anemometer? Older versions use a reed switch. Newer models have potentiometers.

    I actually had 2 new ones fail in less than 18 months. Thankfully, the 3rd one has been going fine.

    What happened with mine was, wind was blowing from W for example, it would flick back to North and then back to W again. It would just keep doing that, and maybe rectify itself for a day or two, before repeating the same thing.

     

    Thanks for this link. I think I bought it early 2014 and it looks like I have the latest anemometer. Mine worked fine and then suddenly indicated North and stayed there - no flicking. I have since remembered that I did have to repair the cable a couple of years ago after I accidentally chopped it whilst clearing a vine from the house wall so I'll start there. It's also possible I nudged the terminal at the sensor suite end when I replaced my hygro/thermo sensor a month or so ago. Failing those ideas I'll have to buy a new anemometer and get the big ladders out.....

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