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Cumulus showing wrong wind direction and wrong solar radiati

Posted: Wed 07 Nov 2012 4:49 am
by marshyq
Hello all,

I'm hoping someone can help and this won't be too complicated. Cumulus is showing the wrong wind direction on my panel. Please see this picture:

Image

EasyWeather is in the foreground (showing the correct direction) and Cumulus is in the background showing N. What is the problem? Why isn't it reading it correctly?

Furthermore, you can see the solar radiation on Cumulus is 314W/m2 which essentially means the sun is out - it's 1150am EST and it's clearly not sunny right now. What could be causing this?

Thanks for your help.

Re: Cumulus showing wrong wind direction and wrong solar rad

Posted: Wed 07 Nov 2012 7:53 am
by steve
You appear to be running Easyweather and Cumulus at the same time, which doesn't work and will cause faulty readings. Stop them both, then start Cumulus on its own and see what readings you get.

Note that Cumulus will always display zero average bearing when the wind speed is zero, and will also display zero for the current bearing if you have that option set.

Does that station actually have solar sensors? If not, you have selected the wrong station type, the solar readings will be meaningless, and any data downloaded from the logger (i.e. to catch up after Cumulus hasn't been running for a while) will be wrong.

Re: Cumulus showing wrong wind direction and wrong solar rad

Posted: Wed 07 Nov 2012 11:05 pm
by marshyq
steve wrote:You appear to be running Easyweather and Cumulus at the same time, which doesn't work and will cause faulty readings. Stop them both, then start Cumulus on its own and see what readings you get.

Note that Cumulus will always display zero average bearing when the wind speed is zero, and will also display zero for the current bearing if you have that option set.

Does that station actually have solar sensors? If not, you have selected the wrong station type, the solar readings will be meaningless, and any data downloaded from the logger (i.e. to catch up after Cumulus hasn't been running for a while) will be wrong.
Steve,

Thanks. I found out my weather station doesn't have the solar sensor so yes, those readings are meaningless. Which station type should I be checking then? I am using an Ambient Weather 2090 model. Does I need to use the "Fine Offset (WH1080 etc)" setting? I'm just not sure.

Also, I don't run EasyWeather and Cumulus at the same time, it was just for a comparison that Cumulus is showing the wrong wind direction. But, it only seems to do it when there is no wind and it defaults to N. Any ideas?

Thanks.

Re: Cumulus showing wrong wind direction and wrong solar rad

Posted: Wed 07 Nov 2012 11:33 pm
by mcrossley
I think Steve already answered that...
steve wrote:Note that Cumulus will always display zero average bearing when the wind speed is zero, and will also display zero for the current bearing if you have that option set.
If there is no wind, it can't have a direction, so the convention is to use zero degrees in that instance, and 360
degrees for North. You can disable this behaviour for the current wind in Cumulus

Re: Cumulus showing wrong wind direction and wrong solar rad

Posted: Wed 07 Nov 2012 11:40 pm
by RayProudfoot
It's not the wind you need to worry about. With a pressure drop of 326 inches an hour it looks like you're about to disappear into a black hole! Batten down the hatches!! :o

Re: Cumulus showing wrong wind direction and wrong solar rad

Posted: Thu 08 Nov 2012 8:19 am
by steve
marshyq wrote:Does I need to use the "Fine Offset (WH1080 etc)" setting?
Yes.