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    Setting wind direction resolution

    Discussion specific to Fine Offset and similar rebadged weather stations
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    rocket51
    Posts: 8
    Joined: Mon 12 Nov 2012 9:52 am
    Weather Station: Fine Offset WH3080
    Operating System: Win XP
    Location: Italy

    Setting wind direction resolution

    Post by rocket51 » Mon 12 Nov 2012 10:13 am

    I recently got a WH3080 weather station that I started to use together with Cumulus.
    Everything works great but I just can not figure out how to set the software for showing wind direction with a 1° resolution instead of the presetted 12.5°.
    Note I'm still running it on my PC.
    Thank you folks.

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    steve
    Cumulus Author
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    Re: Setting wind direction resolution

    Post by steve » Mon 12 Nov 2012 10:38 am

    Fine Offset stations only have a resolution of 12.5 degrees for wind direction (they supply one of 16 compass points).
    Steve

    rocket51
    Posts: 8
    Joined: Mon 12 Nov 2012 9:52 am
    Weather Station: Fine Offset WH3080
    Operating System: Win XP
    Location: Italy

    Re: Setting wind direction resolution

    Post by rocket51 » Mon 12 Nov 2012 11:02 am

    Thanks for your response, Steve.
    I made that question as I see many WH3080s on the internet being able to provide this kind of resolution.
    Google "WH3080 cumulus" to look for some of them.

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    steve
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    Re: Setting wind direction resolution

    Post by steve » Mon 12 Nov 2012 11:09 am

    You're probably looking at average wind direction, as calculated by Cumulus, rather than the 'current' direction supplied by the station. The average bearing is calculated to the nearest degree.
    Steve

    rocket51
    Posts: 8
    Joined: Mon 12 Nov 2012 9:52 am
    Weather Station: Fine Offset WH3080
    Operating System: Win XP
    Location: Italy

    Re: Setting wind direction resolution

    Post by rocket51 » Mon 12 Nov 2012 11:38 am

    Yeah, I was afraid it was quite weird as indeed it is not cleary specified. It is called simply "Wind direction" so I was wondering if there was any "hidden" setting in the software that enhances the wind readings from the weather station.
    Problem solved, thank you very much! ;)

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    NO0C
    Posts: 21
    Joined: Sat 25 Aug 2012 9:13 pm
    Weather Station: Weatherwise WS-2080
    Operating System: Windows XP
    Location: Kearney, Buffalo County, NE, USA

    Re: Setting wind direction resolution

    Post by NO0C » Mon 12 Nov 2012 2:17 pm

    steve wrote:Fine Offset stations only have a resolution of 12.5 degrees for wind direction (they supply one of 16 compass points).
    Hi Steve,

    Don't you mean 22.5° ? (360/16)

    Regards,
    Tim

    "That makes sense to me, doesn't it?" - DUBYA

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    steve
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    Re: Setting wind direction resolution

    Post by steve » Mon 12 Nov 2012 2:43 pm

    NO0C wrote:Don't you mean 22.5° ? (360/16)
    Yes, I do; thanks. I just repeated the OP's figure without thinking about it.
    Steve

    rocket51
    Posts: 8
    Joined: Mon 12 Nov 2012 9:52 am
    Weather Station: Fine Offset WH3080
    Operating System: Win XP
    Location: Italy

    Re: Setting wind direction resolution

    Post by rocket51 » Mon 12 Nov 2012 3:10 pm

    Yes,of course I meant 22.5°, that was my mistake :)

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    Ned
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    Re: Setting wind direction resolution

    Post by Ned » Tue 13 Nov 2012 2:58 am

    Even 16 compass points is pushing it on a Fine Offset, as the wind direction device only has 8 reed switches - getting a hit on the intermediate positions depends on the magnet activating 2 switches similtaneously, which happens infrequently and inconsistently, thanks to wide manufacturing tolerances. Fortunately Cumulus averages out trends from the hodge podge of compass points received (largely due to 'windmilling') to give a pretty good indication of true direction.

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