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W-8681 reliability

For discussion of DIY weather equipment - sensors, accessories, improvements to existing kit etc
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ronbutton
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Joined: Thu 29 Jan 2009 10:27 am

W-8681 reliability

Post by ronbutton » Mon 23 Nov 2009 4:41 pm

I've had my W-8681 for about a year now ,and it seems to be deteriorating by the week ,firstly the rain gauge showed enormous variations (possibly the setting),secondly the wind gauge has stopped recording for over a month now ,and since yesterday the minimum temp seems to be way below corresponding thermometers I have in the garden.
As I am not very technical ,and the kit is not madly expensive should I cut my losses and dump it and buy another ?

Ron :?:

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daj
Posts: 2041
Joined: Tue 29 Jul 2008 8:00 pm
Weather Station: WH1081
Operating System: Pi & MX
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Re: W-8681 reliability

Post by daj » Mon 23 Nov 2009 5:10 pm

Hi Ron, and welcome to the forum :D

I have had mine since July 2008 and it is still going strong. I do not have the exact same model but they are all the same (FineOffset, Watson, etc..) Just rebadged.

As you say they are not too expensive and I have a spare one ready just in case ;-)

I am only a novice weather geek (sorry all you guys, guru!) and I think it is great for what it is.
David
kippfordweather.uk
Cumulus MX & Raspberry Pi

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dane
Posts: 410
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Weather Station: Rosenborg 68700
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Location: Gilleleje, Denmark

Re: W-8681 reliability

Post by dane » Mon 23 Nov 2009 5:17 pm

Hi Ron,
gradual deterioration sounds like dying batteries :)
So try with brand new, fresh alkaline batteries (not rechargeable), in the remote unit as well as the console.
Regards,
Ib

princejim
Posts: 15
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Weather Station: Watson W-8681
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Re: W-8681 reliability

Post by princejim » Thu 21 Jan 2010 4:06 pm

Why not rechargeable batteries?
If he is indeed wise he does not bid you enter the house of his wisdom, but rather leads you to the threshold of your own mind.
Kahlil Gibran

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beteljuice
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Re: W-8681 reliability

Post by beteljuice » Thu 21 Jan 2010 6:48 pm

Rechargeable batteries are are lower 'start' voltage ( 1.2V), usually less millamp/hours delivery, and suffer more with cold temps !
Image
......................Imagine, what you will KNOW tomorrow !

ronbutton
Posts: 5
Joined: Thu 29 Jan 2009 10:27 am

Re: W-8681 reliability

Post by ronbutton » Fri 22 Jan 2010 9:31 am

Sorry guys for not getting back to anyone ,
I had already changed the batteries but the problem didn't go away for several weeks ,but then did ! .
The latest anomaly is the temperature started to read over 4C above the actual air reading ,this is slowly beginning to come down as this morning the extra is only +2.4c...strange thing this machine ,but still fun.

Ron

http://sandaysoft.com/forum/posting.php ... =16&t=1728#

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Repairman77
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Weather Station: WH1080
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Location: Cambridgeshire UK

Re: W-8681 reliability

Post by Repairman77 » Fri 22 Jan 2010 11:56 am

Ron, you could have a problem with the battery connectors in the transmitter unit.
It's very common to get a poor (high resistance) connections in battery boxes, especially when they are exposed to the elements.

Another possibility is dry joints on the transmitter PC board. If you are competent with electronics and have a small tip soldering iron you could break open the unit and go over all the connections on the board.

I would check the battery connectors first though.

Hope that helps.

Mike.
Retired Radio and Electronics Engineer residing in Cambridgeshire, UK.

ronbutton
Posts: 5
Joined: Thu 29 Jan 2009 10:27 am

Re: W-8681 reliability

Post by ronbutton » Fri 22 Jan 2010 12:10 pm

Thanks Mike ,the transmitter is in a screen so is nice and dry ,but I will check it when the rain stops !

Ron

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hills
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Re: W-8681 reliability

Post by hills » Fri 22 Jan 2010 12:14 pm

Ignore this I misread your last post :oops:

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Repairman77
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Re: W-8681 reliability

Post by Repairman77 » Fri 22 Jan 2010 1:47 pm

ronbutton wrote:Thanks Mike ,the transmitter is in a screen so is nice and dry ,but I will check it when the rain stops !

Ron
Ron, a screen will not stop dampness getting into the unit and battery box, especially on foggy or rainy days when the humidity is 100%.
If it did the humidity sensor in the box wouldn't work. ;)

Mike.
Retired Radio and Electronics Engineer residing in Cambridgeshire, UK.

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