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| uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged. |
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#1
July 19th 06, 05:04 PM
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Very hot or over the top?
My WMR928 external sensor is reading around 33 degrees on it's pole in the
air, whilst my add on sensor under a tree is a couple of degrees cooler. I realise temperature is supposed to be read in the shade, but is my WMR928 dome shielding the sensor correctly or should that be in the shade as well to avoid radiation and the greenhouse effect in the head of the dome???? |
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#2
July 19th 06, 05:30 PM
posted to uk.sci.weather
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Very hot or over the top?
Matt Overton wrote:
My WMR928 external sensor is reading around 33 degrees on it's pole in the air, whilst my add on sensor under a tree is a couple of degrees cooler. I realise temperature is supposed to be read in the shade, but is my WMR928 dome shielding the sensor correctly or should that be in the shade as well to avoid radiation and the greenhouse effect in the head of the dome???? The cover on the WMR928 temperature sensor definitely doesn't give enough shielding from the sun on its own. At my previous house I installed it during the autumn, and the following summer the sun was in a position to fall on it in the morning - when it did, the reading soared. -- Steve Loft, Glenlivet. 200m ASL Weather and webcam: http://www.livet.org.uk/weather |
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#3
July 19th 06, 06:55 PM
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Very hot or over the top?
"Steve Loft" wrote in message ... Matt Overton wrote: My WMR928 external sensor is reading around 33 degrees on it's pole in the air, whilst my add on sensor under a tree is a couple of degrees cooler. I realise temperature is supposed to be read in the shade, but is my WMR928 dome shielding the sensor correctly or should that be in the shade as well to avoid radiation and the greenhouse effect in the head of the dome???? The cover on the WMR928 temperature sensor definitely doesn't give enough shielding from the sun on its own. At my previous house I installed it during the autumn, and the following summer the sun was in a position to fall on it in the morning - when it did, the reading soared. -- Steve Loft, Glenlivet. 200m ASL Weather and webcam: http://www.livet.org.uk/weather I've just installed a PC cooling fan operated by a solar panel into my home made Stevenson Screen. Not the done thing I know but as I am not an official recorder it definitely seems to help. A bit of fun plus of course it only runs when there is intense radiation on the screen! Dave |
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