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Pressure differences ** solved **

Posted: Wed Jun 11, 2008 3:18 pm
by evan.mac
I have a difference in pressure readings between my WMR100 and Meteohub. Is it safe to assume that Meteohub is adjusting the reading from the WMR100 based on the altitude that I entered in the Meteohub settings screen.
Thanks

Re:Pressure differences

Posted: Wed Jun 11, 2008 6:07 pm
by skyewright
evan.mac wrote:Is it safe to assume that Meteohub is adjusting the reading from the WMR100 based on the altitude that I entered in the Meteohub settings screen.
Meteohub should be doing what it has been told to do in the 'Sea Level' section of the 'Weather Station' page. That option sets the method that Meteohub uses to derive the sea level equivalent pressure.

Does that make sense now?

Re:Pressure differences

Posted: Thu Jun 12, 2008 1:15 am
by evan.mac
Thanks again skyewright. I found it and it kind of makes sense. \"compute based on weather station's height\" is ticked so I guess it is adjusted based on altitude.

Re:Pressure differences

Posted: Thu Jun 12, 2008 11:26 am
by skyewright
evan.mac wrote:I found it and it kind of makes sense. "compute based on weather station's height" is ticked so I guess it is adjusted based on altitude.
That the option I use too, and with it Meteohub gives a reasonable value for sea level pressure when compared to local 'official' sources.
My pressure reading comes from a WMR928, but I believe the same logic applies regardless of data source.

I don't have a WMR100, but on the WMR200 there is an option to set an altitude. Using that, the pressure value that my WMR200 console shows is equivalent to the Meteohub sea level pressure too.