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Problems with Humidity readings - Fine Offset

Discussion specific to Fine Offset and similar rebadged weather stations
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hungerdunger
Posts: 74
Joined: Fri 26 Dec 2008 8:03 pm
Weather Station: Maplin N96GY (WH-1081)
Operating System: Windows 10 Pro
Location: Carmarthen, West Wales

Problems with Humidity readings - Fine Offset

Post by hungerdunger »

I was given my Fine Offset for Christmas 2008. In the three years since then, the outside humidity readings have become less and less reliable and now, apart from the odd "spike" seem to be permanently set at 99. Here are three graphs for Oct to December 2009, 10 and 11 which illustrate the problem.

While I'm not too worried about humidity readings - for me they're the least important data - I would like to get it recording properly. Can anyone advise me as to whether the sensor itself has probably packed up, or are there any checks I could carry out to see if I could get it working again? (I have to confess I'm not actually sure where the humidity sensor is located!)
2009.JPG
2010.JPG
2011.JPG
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Capel Dewi (Carmarthen) Weather Station:
https://twitter.com/CapelDewiWeathr
AllyCat
Posts: 1132
Joined: Sat 26 Feb 2011 1:58 pm
Weather Station: Fine Offset 1080/1 & 3080
Operating System: Windows XP SP3
Location: SE London

Re: Problems with Humidity readings - Fine Offset

Post by AllyCat »

Hi,

The humidity sensor is in the external transmitter unit, see this sticky thread, but I don't think anybody has found a source of a spare sensor component. You might be able to "clean" it and there was a thread recently about calibrating humidity sensors using saturated salt solutions.

Spare transmitter units can be purchased for around £30 but you need to ensure that you get the correct transmitter frequency. IMHO it's probably better to buy a complete new system (especially if you have a Clas Ohlson store nearby) to give you spares for any other sensor which mighht fail.

Cheers, Alan.
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nking
Posts: 813
Joined: Thu 17 Dec 2009 2:03 pm
Weather Station: W-8681
Operating System: Windows 10
Location: Hurstpierpoint, West Sussex, UK
Contact:

Re: Problems with Humidity readings - Fine Offset

Post by nking »

I would agree with Alan, get a complete system from Maplin currently at £59.99 http://www.maplin.co.uk/usb-touchscreen ... ter-228825 ;)
hungerdunger
Posts: 74
Joined: Fri 26 Dec 2008 8:03 pm
Weather Station: Maplin N96GY (WH-1081)
Operating System: Windows 10 Pro
Location: Carmarthen, West Wales

Re: Problems with Humidity readings - Fine Offset

Post by hungerdunger »

Belated thanks to both of you for your advice - I think a new weather station is on the cards. I just need to get approval from my Financial Controller.

One further question: I have the N96FY which is currently being sold by Maplin at £124.99.
(http://www.maplin.co.uk/usb-wireless-we ... ter-223254)

The one you are suggesting I buy for £59.99 is the N96GY. They look identical from the illustrations; can anyone tell me what the difference is?
Last edited by hungerdunger on Sat 17 Dec 2011 1:02 am, edited 1 time in total.
Capel Dewi (Carmarthen) Weather Station:
https://twitter.com/CapelDewiWeathr
AllyCat
Posts: 1132
Joined: Sat 26 Feb 2011 1:58 pm
Weather Station: Fine Offset 1080/1 & 3080
Operating System: Windows XP SP3
Location: SE London

Re: Problems with Humidity readings - Fine Offset

Post by AllyCat »

Hi,

AFAIK the only possible difference is that the newer kit may use the 868 MHz radio transmission frequency. Not really significant unless you want to use two consoles with one transmitter.

IMHO these FO kits are not worth over £100, there are plenty of reputable sellers for less than £100, even some for the new units with additional solar data.

Cheers, Alan.
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