Need help to Solar setup

[vejrmanden]

Hi

Using Davis Vantage 2 with Solar.

According to Google Earth I'm living right here: 
56°41'45.76"N
  9°33'32.22"Ø

In WD I have setup my coordinates to:
 56,41
 -9,33

Is that correct ?

I have found this website to calculate max solar value: http://www.stella-maris.org.uk/maxsolar.php

But I'm not getting the same result from WD and that site for maximum solar value.

Maybe I'm not inserting the correct coordinates in WD and/or in the website calculator ???

The result is that at 8:46 in the morning it is a beautyful morning with absolutely no clouds (see attachment).

The calculated MAX solar in WD is: 304 W/m2
The current reading: 113 W/m2
Current percent reading: 35%


Max Solar value according to the website at the link above: 521 W/m2

I would appreciate some advice to put in the right values for my location. I am using the solar reading to show current weather condition and at this absolutely fantastic morning with no clouds and a shining sun I get the current condition as "Many Clouds" 

Any help please ?

Henrik

[Zalmor]

In WD I have setup my coordinates to:
 56,41
 -9,33

Not at my WD at the moment but I believe those commas should be periods.
56.41
-9.33

[vejrmanden]

Thanks

But I hope not, because the numbers (degrees and minutes) are places in seperate boxes in WD

Any one else ?

[NorCal Dan]

I came up with decimal gmap coords of 56.69, 9.55 plotting near Aalestrup, Denmark.

[vejrmanden]

I came up with decimal gmap coords of 56.69, 9.55 plotting near Aalestrup, Denmark.

Thats right ... that IS my position - but what to insert in WD at solar (see the attachment).

Is my negative number correct or do I need negativ minutes also ???

[NorCal Dan]

Coords look ok other than slightly different from what I posted.  Your set to be one hour ahead of GMT timezone.  I always ran with the default 5 for attenuation.  Atmospheric conditions may cause low readings but I wouldn't expect more than 10% to 20% difference from max reading.  How old is your solar sensor?  Your under-reading by a bunch, any chance your sensor is bad?  Davis recommends very specific methods for cleaning the sensor, and of course it needs to be perfectly level for accurate readings.

[vejrmanden]

It might just be me .... but it's not possible to insert 56.69 in WD ????

So when google earth says that theese are my coordinates:
56°41'45.76"N
  9°33'32.22"Ø

What should I input in WD ?

[niko]

56°41'45.76"N
  9°33'32.22"Ø

rounding to whole minutes:

56 deg 42 mins
9 deg 34 mins

but these minor location differences are only going to make a very small difference.

[Weather Display]

is your windows time zone also set correctly?

[vejrmanden]

Okay,

I have checked everything, and now I guess the coordinates is correct.

At least the max solar value is the same in WD and here: http://www.stella-maris.org.uk/maxsolar.php

I have removed the spiderweb that covered the solar

The only thing no one have answered yet is:

Should the minutes be -34 or is 34 correct  (from the 9.34) ?

Thanks.

[jmcmurry]

Only the degrees would have the "-".

- Jim

[Weather Display]

The only thing no one have answered yet is:

Should the minutes be -34 or is 34 correct  (from the 9.34) ?

the minutes should always be a positive number

because the minutes are taken away if the hour is a negative number, from the hour
in the code
(so if you have the minutes as a negative number then those negatives will cancel each other out, and will result in an error in the calculation)
(so I actualy need to change it so that it cant be negative, even if entered as negatve...I will do that)

[Weather Display]

I have also discoverd I was applying the minutes 2x in the code
have fixed that as well
this should help with calculating the solar % (current compared to max) at the start and end of the day (i.e when low solar values) problem hopefully
use a new .zip update, ready now