Seite 1 von 1

UV-I Long time values problem with IROX.

Verfasst: 07 Jan 2009 12:47
von Johan S
I have done a complete reinstall of WsWin beginning this year (as I moved to a new computer). I use WsWin v. 2.93.19 in a Win XP SP3 environment. Weatherstation is an IROX Pro with 5 min readings. My problem is to get accurate presentation of UV-I data under Statistic dates/Long time values. The value presently shown in this display shows date 2009.01.05 time 10:55 linked to a UV-I value of 0.1. Under menu View/Table we can see a UV-I value of 2.0 at date 2009-01-05 time 10:55 but that date (and so far for this year.. if to trust the graphic presentations -Control/View)) the UV-I peaked at 13:59 with a value of 5.9. So first question: which adjustments needs to be done to get the maximum value to be shown under Statistic dates/Long time values.
To further complicate ..under Statistics/Year a max UV-I value of 1.3 is shown for 2009-01-02, time 14:05.
Second question ...as I understand the UV-Index can be defined in many ways. Looking at the Swedish Meteorological Institite (SMHI) they have scale where 0-2 is low, 3-5 moderate, 6-7 high and so on. This scale seems to differ a little bit but not too much from the scale used by the German Meteorological institute (DWD). So far the only adjustment done in WSWin as to IROX and UV-I is that I have marked “UV->Vantage Pro 0..16 UV” under Wetaher Station adjustments. How to make adjustments so UV-I values shown in WSWin corresponds – approximately - to the scale used by SMHI or DWD.

Verfasst: 08 Jan 2009 00:29
von Werner
@Johan,

Wswin uses only the values reported from the station.

The original value is stored as sensor Id 10 (or was it 9)
If you don't activate the option "UV->Vantage Pro 0..16 UV"
the UV sensor value ist the same as the original.

You need this option only , when your UV sensor has a white diffusor (newer modells have ab black diffusor)
My experience was. that UV sensor with a black sensor reports to low uv values!

You can always correct such problems with overwrites such values with "0" for each char and Updates "graphics/tables ..." (under Internet)

Werner