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Weather Station Shield

For discussion of DIY weather equipment - sensors, accessories, improvements to existing kit etc
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raul_sbd
Posts: 40
Joined: Wed 16 Jan 2013 7:58 am
Weather Station: Davis Vue
Operating System: Windows
Location: Sale

Weather Station Shield

Post by raul_sbd » Wed 27 Feb 2013 2:19 pm

Hello,

I recently built a shield for my WH1081 Weather station temp sensor

I made it with 20cm diameter plant pots that then i painted in white. Also to make it even better i fitter a solar fan in the top that works as soon as the sun is out.

All finished and my results are the same that without the weather shield.. still giving +2 more degrees that the very nearby weather stations.

The shield is full exposed to the sun.. i don't have any share where to fit it on my terrace..

I wonder if anyone of you have a remedy for this ... i was thinking in calibrate the weather station on cumulus.. but still if i take out 2 degrees then in the night is going to read too low... Also i though in put a double shield with the original that was coming with the weather station plus the one i diy... but i thought that probably that was going to make only high reads..

Ps. my fan is one of those that comes the motor and the panel and the blades separated.. then you put all toguether and it works.

Any suggestions?

Best Regards

CrasHBoneS
Posts: 96
Joined: Fri 06 Jan 2012 10:49 am
Weather Station: PCE-FWS20
Operating System: Windows XP SP3
Location: Bellaria Igea Marina (RN)
Contact:

Re: Weather Station Shield

Post by CrasHBoneS » Wed 27 Feb 2013 2:28 pm

be sure that distance between plant pots does not permit to sun to reach the sensor

raul_sbd
Posts: 40
Joined: Wed 16 Jan 2013 7:58 am
Weather Station: Davis Vue
Operating System: Windows
Location: Sale

Re: Weather Station Shield

Post by raul_sbd » Wed 27 Feb 2013 2:32 pm

CrasHBoneS wrote:be sure that distance between plant pots does not permit to sun to reach the sensor
Thank you ;) i will double check.. could also affect that the last plate at the bottom of the shield is whitout the hole? so is closed...

raul_sbd
Posts: 40
Joined: Wed 16 Jan 2013 7:58 am
Weather Station: Davis Vue
Operating System: Windows
Location: Sale

Re: Weather Station Shield

Post by raul_sbd » Thu 28 Feb 2013 1:49 pm

I have tried with smaller spacers in between plates but today another v sunny day here in Manchester i still having readings of +2 degrees more than nearby weather stations.

Any suggestion? i cannot find a shade to put the sensor on my terrace.. from 11 am is fully exposed to the sun.

Thank you

KevinF
Posts: 71
Joined: Sat 14 Apr 2012 5:01 pm
Weather Station: WMR200
Operating System: XP SP3
Location: Lancashire

Re: Weather Station Shield

Post by KevinF » Thu 28 Feb 2013 3:59 pm

Hi Raul

I'm not sure of the physical position of your shield, but with you mentioning a terrace I get the impression it is above a paved area and close to a wall. Both will give off convective heat and therefore increase your readings.

I'm not a million miles away and my high today was 13c at 14.06. Ray Proudfoot over at Cheadle Hulme keeps very accurate records and much closer to you so it is worth having a look there.

Regards Kevin

http://www.wiganweather.co.uk/

raul_sbd
Posts: 40
Joined: Wed 16 Jan 2013 7:58 am
Weather Station: Davis Vue
Operating System: Windows
Location: Sale

Re: Weather Station Shield

Post by raul_sbd » Tue 26 Mar 2013 3:22 pm

KevinF wrote:Hi Raul

I'm not sure of the physical position of your shield, but with you mentioning a terrace I get the impression it is above a paved area and close to a wall. Both will give off convective heat and therefore increase your readings.

I'm not a million miles away and my high today was 13c at 14.06. Ray Proudfoot over at Cheadle Hulme keeps very accurate records and much closer to you so it is worth having a look there.

Regards Kevin

http://www.wiganweather.co.uk/
Hello Kevin,

Indeed is on a terrace is about 2 meters above of a grass bowling area and is on fixed to a steel grey verena and about 2 meters distance of the living room windows. Im not sure if they will give any convective heat those.. but im quite annoyed.. after spending quite lot of cash on the shield... you can watch the location on here www.raulsbd.co.uk is my webcam in the section webcam.

I checked Proudfoot and its a difference of about 1.5 degrees when sun is out and another one in Sale is the same.. Im not sure more how to shield it from the sun...

any ideas?

Thank you

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