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 Post subject: Strange temp readings in build 977
PostPosted: Wed Feb 09, 2011 8:45 am 
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Joined: Sat Dec 04, 2010 10:11 am
Posts: 94
Location: Lemmer
Weather Station: ws4000
Operating System: win7
Yesterday I updated to build 977. And since then I got strange temp readings in Cumulus.
This morning Cumulus says the max temp is 37,7 degrees and the min temp -36,2 degrees.

To check the readings I have started easyweather and in easyweather the temp values are correct.

So the problem is not in my weatherstation but in cumulus itself.
Attachment:
cumulus1.png


Any sugestions what to do?


Theo


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 Post subject: Re: Strange temp readings in build 977
PostPosted: Wed Feb 09, 2011 8:51 am 
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Joined: Mon Jun 02, 2008 6:49 pm
Posts: 17548
Location: Sanday, Orkney
Weather Station: Davis VP2
Operating System: Windows Home Server 2011
phtvs wrote:
To check the readings I have started easyweather and in easyweather the temp values are correct.

So the problem is not in my weatherstation but in cumulus itself.


I doubt that very much. You can't compare the data read by Cumulus when running 'live' with the data read by Easyweather afterwards. Your station presumably produced 'spikes' - see lots of other threads about this, in particular Gina's ongoing work. Fine Offset stations do this all the time.

There are anti-spike settings in the calibration screen which are there to try to filter out spikes such as the ones you have experienced. I tried to find the Cumulus graphs on your web site so look at the spikes, but I can't find them as I don't understand the language.

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 Post subject: Re: Strange temp readings in build 977
PostPosted: Wed Feb 09, 2011 8:54 am 
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Joined: Sat Dec 04, 2010 10:11 am
Posts: 94
Location: Lemmer
Weather Station: ws4000
Operating System: win7
steve wrote:
phtvs wrote:
To check the readings I have started easyweather and in easyweather the temp values are correct.

So the problem is not in my weatherstation but in cumulus itself.


I doubt that very much. You can't compare the data read by Cumulus when running 'live' with the data read by Easyweather afterwards. Your station presumably produced 'spikes' - see lots of other thread about this, in particular Gina's ongoing work. Fine Offset stations do this all the time.

There are anti-spike settings in the calibration screen which are there to try to filter out spikes such as the ones you have experienced. I tried to find the Cumulus graphs on your web site so look at the spikes, but I can't find them as I don't understand the language.



The problem is that the console shows the right temp readings too.

Graphs are at: http://www.weerstation-lemmer.nl/grafieken-nieuw.html
WUHU graphs: http://www.weerstation-lemmer.nl/weathe ... round.html

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 Post subject: Re: Strange temp readings in build 977
PostPosted: Wed Feb 09, 2011 8:59 am 
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Joined: Sat Dec 04, 2010 10:11 am
Posts: 94
Location: Lemmer
Weather Station: ws4000
Operating System: win7
I have found the spike removal in the calibration menu. What do I need to put there?
the temp spike values says 999,0 is this ok?

Attachment:
cumulus2.png


Attachment:
cumulus3.png


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 Post subject: Re: Strange temp readings in build 977
PostPosted: Wed Feb 09, 2011 9:03 am 
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Joined: Mon Jun 02, 2008 6:49 pm
Posts: 17548
Location: Sanday, Orkney
Weather Station: Davis VP2
Operating System: Windows Home Server 2011
When did you take that screenshot - just now? Are you getting the very low and high values very frequently, and for extended periods?

What temperature was the console showing at the time you took the screenshot?

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 Post subject: Re: Strange temp readings in build 977
PostPosted: Wed Feb 09, 2011 9:05 am 
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Joined: Tue Sep 09, 2008 3:37 am
Posts: 696
Location: Auckland, New Zealand
Weather Station: wh-1081
Operating System: Weather Laptop - Windows 7 Pro
Press the "HELP" button in the calibration window?

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 Post subject: Re: Strange temp readings in build 977
PostPosted: Wed Feb 09, 2011 9:07 am 
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Joined: Mon Jun 02, 2008 6:49 pm
Posts: 17548
Location: Sanday, Orkney
Weather Station: Davis VP2
Operating System: Windows Home Server 2011
Super-T wrote:
Press the "HELP" button in the calibration window?

I'm no longer quite so sure that Theo is seeing the traditional Fine Offset spikes...

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 Post subject: Re: Strange temp readings in build 977
PostPosted: Wed Feb 09, 2011 9:10 am 
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Joined: Sat Dec 04, 2010 10:11 am
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Location: Lemmer
Weather Station: ws4000
Operating System: win7
steve wrote:
Super-T wrote:
Press the "HELP" button in the calibration window?

I'm no longer quite so sure that Theo is seeing the traditional Fine Offset spikes...


At the time I took the screenshot the temp at the console was -3.0 degrees....

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 Post subject: Re: Strange temp readings in build 977
PostPosted: Wed Feb 09, 2011 9:13 am 
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Joined: Sat Dec 04, 2010 10:11 am
Posts: 94
Location: Lemmer
Weather Station: ws4000
Operating System: win7
temp at the console is -2,8

Attachment:
cumulus4.png



EDIT: I have quit Cumulus uploading to my website because off the temp problems.


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Last edited by phtvs on Wed Feb 09, 2011 9:14 am, edited 1 time in total.

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 Post subject: Re: Strange temp readings in build 977
PostPosted: Wed Feb 09, 2011 9:14 am 
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Joined: Mon Jun 02, 2008 6:49 pm
Posts: 17548
Location: Sanday, Orkney
Weather Station: Davis VP2
Operating System: Windows Home Server 2011
Could you upload a screenshot of the temperature graph in Cumulus, please?

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 Post subject: Re: Strange temp readings in build 977
PostPosted: Wed Feb 09, 2011 9:15 am 
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Joined: Tue Sep 09, 2008 3:37 am
Posts: 696
Location: Auckland, New Zealand
Weather Station: wh-1081
Operating System: Weather Laptop - Windows 7 Pro
Yes...not normal spike as it was about 40 minutes or so.

The help button was for the calibration setup...all carefully explained :-)

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 Post subject: Re: Strange temp readings in build 977
PostPosted: Wed Feb 09, 2011 9:16 am 
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Joined: Sat Dec 04, 2010 10:11 am
Posts: 94
Location: Lemmer
Weather Station: ws4000
Operating System: win7
Attachment:
cumulus5.png


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 Post subject: Re: Strange temp readings in build 977
PostPosted: Wed Feb 09, 2011 9:18 am 
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Joined: Mon Jun 02, 2008 6:49 pm
Posts: 17548
Location: Sanday, Orkney
Weather Station: Davis VP2
Operating System: Windows Home Server 2011
I didn't mean that one (though that's bad enough) I meant the 'normal' 1-minute temperature graph.

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 Post subject: Re: Strange temp readings in build 977
PostPosted: Wed Feb 09, 2011 9:19 am 
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Joined: Tue Sep 09, 2008 3:37 am
Posts: 696
Location: Auckland, New Zealand
Weather Station: wh-1081
Operating System: Weather Laptop - Windows 7 Pro
Looks like someone used a power tool close by.....multiple spikes.

even the small spikes all the way through are large

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 Post subject: Re: Strange temp readings in build 977
PostPosted: Wed Feb 09, 2011 9:21 am 
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Joined: Sat Dec 04, 2010 10:11 am
Posts: 94
Location: Lemmer
Weather Station: ws4000
Operating System: win7
steve wrote:
I didn't mean that one (though that's bad enough) I meant the 'normal' 1-minute temperature graph.


Not sure what you mean.. is it this one?

Attachment:
cumulus6.png


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