Davis VP2 anemometer reed-switch replacement

[jwwd]

Hi

Im having problems with my Davis VP2 anemomenter. Windspeed is stopping 3-4 times amonth.
The solution is to loosen the windcups and press them to the top and tighten them again.

I have been in contact with the Danish reseller - and he thinks its a bad reed-switch - so I ordered a new one for replacement.

Yesterday I tried to disasemble my anemomenter - but had to give up - I was affraid to break some of the plastic housing.

Anyone who have tried to change reed-switch in the anemomenter? I have been searching a lot - but havent found anything usefull guides so far.

See attached picture of the reed-switch.

Best regards,

Henrik

Best regards,

---

[belfryboy]

I have done this numerous times,

My spare anemometer is currently offsite as a replacement to a customer, but as soon as I get it back I intend to write a “how to” guide.

Watch this space.

[jwwd]

@belfryboy post:2

I have done this numerous times,

My spare anemometer is currently offsite as a replacement to a customer, but as soon as I get it back I intend to write a “how to” guide.

Watch this space.

Hi

WOW - and thank you very much - this is very kind of you.

Best regards

Henrik

[belfryboy]

PM sent.

[chrischtian]

Hello,

is it possible to make this howto public? Having the same issue here…

Thanks a lot,
Christian

[Breitling]

Surely you’l find this useful:

http://www.lexingtonwx.com/anemometer/

I’ve opened three or four anemometers, new VP2 and old WMII. The only special care you need to have is the very small slack on internal wires.

[belfryboy]

@chrischtian post:5

Hello,

is it possible to make this howto public? Having the same issue here…

Thanks a lot,
Christian

And here it is,

Please feel free to comment on how easy it is to follow.

[nikoshepherd]

Very good, getting it apart is the most difficult part and that’s a great explanation.

Probably be helpful if you could add a section/branch that covers replacing just the reed instead of the whole board.

[belfryboy]

@niko post:8

Very good, getting it apart is the most difficult part and that’s a great explanation.

Probably be helpful if you could add a section/branch that covers replacing just the reed instead of the whole board.

I suppose that would be a good idea, but I figured that if anyone had been brave enough to get as far a splitting it then they probably had the skill to replace the reed switch itself.

[nikoshepherd]

@belfryboy post:9

I suppose that would be a good idea, but I figured that if anyone had been brave enough to get as far a splitting it then they probably had the skill to replace the reed switch itself.

This is the internet…

Can you get the board out without cutting the wires if you just want to replace the reed?

Maybe just add a comment about the care needed when soldering reeds, it would be a shame for someone to go through the whole thing just to have it fail again in a short time.

[Breitling]

@niko post:10

Can you get the board out without cutting the wires if you just want to replace the reed?

No, there’s no wire enough to get it fully out. You have to cut or desolder wires from the potentiometer.

On step #5 there is an easier and safer way to get the potentiometer out: just push it with a small screwdriver from the opposite side (the anemometer cup side). There is a hole on the plastic holder to pass it through.

[oreokid]

I too, just in the past week, have had my wind speed read “0” when there is certainly wind. I removed the cups and then put them back and still no wind speed. So, next step seems to be replacing the reed switch. Is there a source for the circuit board, not just the reed switch?
thanks.
Steve