Hang on. Maybe I don't understand the situation, but you said you wanted to replace the "wind vane." Do you mean just the plastic arrow-like piece? Or, the whole thing, including the potentiometer?
If it's just the arrow, I don't see why you can't use most anything that would fit. It just has to point into the wind. Or, 3D print something. Or, epoxy the old one back together. -tk On Thu, Nov 19, 2020 at 11:18 AM Chris Thompstone < [email protected]> wrote: > Well thanks for the info > I did wonder that it's probably be different. > Thanks again > Not sure where that leaves me > > On Thursday, 19 November 2020 at 18:20:36 UTC [email protected] wrote: > >> From my knowledge, the answer is no. >> >> The Davis uses pulses to signal wind speed, and the Peet Bros does, too. >> >> The major difference is that the Davis uses the much more traditional >> potentiometer to deliver a voltage and the ISS reads that to convert to a >> wind direction. >> >> The Peet Brothers does something much more difficult and very different. >> It times when one of the magnets makes or breaks and then depending upon >> the time until it pulses again, determines the angle of rotation through >> which the wind speed magnet has rotated, simplified explanation. >> Therefore, if there is no rotation of the wind speed magnet, there cannot >> be a determination of which direction the vane is pointing, unlike a >> no-wind condition for a Davis, which of course will give a voltage on the >> wind direction sense line. >> >> Very odd, but seems to work for them. If you go to Davis's web site, >> there is a better explanation of how they designed their unit. It >> certainly gets rid of the potentiometer and it wearing out, but the timing >> circuitry to measure the angle has to be a bit more complicated. >> Dale >> >> >> On Thursday, November 19, 2020 at 3:00:46 AM UTC-6 [email protected] >> wrote: >> >>> >>> Hi Guys, anyone know if you can use a davis wind vane on a ultimeter >>> 2100? >>> My wind vane has broken again, this one didn't last long (about 6 >>> months, 1 year maybe) >>> It's difficult and expensive to get these in the UK, have to import etc. >>> >>> So would like to try something else instead. >>> >> -- > You received this message because you are subscribed to the Google Groups > "weewx-user" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/weewx-user/9804ff37-c8ad-4318-b46b-16752124c57en%40googlegroups.com > <https://groups.google.com/d/msgid/weewx-user/9804ff37-c8ad-4318-b46b-16752124c57en%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/CAPq0zEAzUnCJ3DLbxUqSaPcWjiagCnbLw9wF5zahY0OwZ5W7ww%40mail.gmail.com.
