[wxqc] Vantage Pro Vulnerability to High Humidity

[Victor Engel]

I spoke too soon. It's failing again now, and this time the RH is only 82%.
I guess I'll be packing it up and sending it in this weekend.

On 11/5/06, Victor Engel <brillig at gmail.com> wrote:
>
> It appears that I've resolved the issue by reseating the anemometer.
> Before I did this, I tried spinning it and elevating it by pressing a
> fingernail against the hub while it was spinning. This produced a wind spike
> in the data. So I loosened the anemometer elevated it as high as it would
> go, jiggling the unit while doing so to allow the axle to descend a bit
> (maybe?). Then I reset the set screw while the cups were elevated. This
> seems to have done the trick. If the problem resurfaces, I may try
> repositioning the magnet by inserting a shim under it.
>
> I'm still curious why this happens only when close to 100% humidity. I'm
> afraid the coil may be compromised.
>
> On 11/5/06, Victor Engel < brillig at gmail.com> wrote:
> >
> > The last time a long period of high humidity came through, the windspeed
> > of my station reported 0 until the high humidity period ended. Now we have
> > high humidity again and windspeed is again reporting as zero.
> >
> > I've reported this to support, and they suggested an alignment
> > adjustment to try to resolve the problem at first. When I pointed out that
> > the readings came back on their own when it dried out, they suggested that
> > if it happened again, I send it in for replacement.
> >
> > I have no problem doing so. It's still under warranty. I wonder, though,
> > if there is a design flaw that makes this likely. Maybe there is some part
> > of the electronics that is exposed to the elements and shouldn't be,
> > resulting in a short in high humidity conditions. Can anyone suggest what I
> > should look for when I take the anemometer down? Would a crack somewhere
> > confirm this notion?
> >
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://server.gladstonefamily.net/pipermail/wxqc/attachments/20061109/c45af549/attachment.html