Welcome to the Cumulus Support forum.

Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024

Cumulus MX V4 beta test release 4.0.0 (build 4018) - 28 March 2024

Legacy Cumulus 1 release v1.9.4 (build 1099) - 28 November 2014 (a patch is available for 1.9.4 build 1099 that extends the date range of drop-down menus to 2030)

Download the Software (Cumulus MX / Cumulus 1 and other related items) from the Wiki

UV valor max 4 !

Discussion specific to Oregon Scientific weather stations
Post Reply
OliII
Posts: 54
Joined: Mon 19 Mar 2012 11:47 am
Weather Station: WMR 200 by Oregon Scientific
Operating System: WinXP SP3
Location: Belgium

UV valor max 4 !

Post by OliII »

Hi !
Since few days, we have sunny days, and very hot (Temperature in afternoon is above 30°).
And i see on the graphs that UV maximum is always 4 ans some times decreasing to 2 !!
uv.png
My UV sensor is mounted on a pylone, at 4m from the ground, vertically.
At 5pm, uv is near 0 (perhaps 1)

I suspect that the sensor is wrong. Anybody has the same problem with the OS WMR200 UV Sensor ?
On this picture, i see that the UV SENSOR is mounted at 45 degrees ..
Image
Is it good ?

Thx !
You do not have the required permissions to view the files attached to this post.
Image
http://www.7331.be/meteo website based on the phpBB3 forum and template. WMR200 + UVN 800 - Cumulus 1.9.4 1062 / Windows XP Service Pack 3 build 2600 FR
dive76
Posts: 21
Joined: Sun 22 Jan 2012 7:37 am
Weather Station: Davis VP2
Operating System: Windows Server 2012 R2
Location: Bangkok

Re: UV valor max 4 !

Post by dive76 »

I have the same problem. Max level 4 and I am in Indonesia with lots of sun. Changed the sensor already to a new one. Same result.
User avatar
avoorpool
Posts: 168
Joined: Tue 08 May 2012 4:24 pm
Weather Station: WMR200A
Operating System: Windows 10 64-bit
Location: Pickering, Ontario Canada
Contact:

Re: UV valor max 4 !

Post by avoorpool »

Hi,

No Problem here with the same UV Sensor. (Oregon UVN800)
I mounted it indeed under a 450 angle, facing directly South. (into Sun path at noon)
Currently still measuring (in Toronto) a strong UV 8 at mid-day (Forecast says 6 - 8).
After initial installation, I had some "loose" contact in battery compartment, but fixed with a small piece of Aluminum foil :D :D
Do you have consitent transmission to main console?

Cheers,

Arthur
User avatar
SJG1976
Posts: 365
Joined: Wed 21 Dec 2011 11:04 am
Weather Station: Davis WLL, with Airlink
Operating System: Raspberry Pi3 MX on USB Drive
Location: Glemsford, Suffolk
Contact:

Re: UV valor max 4 !

Post by SJG1976 »

Im in Essex, been getting up to about 5 latly here, not sure whats thas like fir anyone else round this way, but I think its anout right?

Excuse my typing, ipad keys and me don't agree.
User avatar
avoorpool
Posts: 168
Joined: Tue 08 May 2012 4:24 pm
Weather Station: WMR200A
Operating System: Windows 10 64-bit
Location: Pickering, Ontario Canada
Contact:

Re: UV valor max 4 !

Post by avoorpool »

HI,

When the UV Sensor indicates a level "4", it obviously is working. :D
If it's malfunctioning, I would say it displays either "0" (nothing) or it works properly.

On my site I use a 7-Day UV Index Forecast script from Saratoga WX, with UV data that is provided (with permision) by TEMIS (http://www.temis.nl/).
Check it out and you can see the actual (Forecast) UV values for your region by typing in your Long/Lat coordinates.

Cheers,

Arthur
User avatar
gwheelo
Posts: 453
Joined: Wed 11 Jun 2008 7:36 pm
Weather Station: WMR-88
Operating System: Windows 8.1
Location: L'Estartit, Spain
Contact:

Re: UV valor max 4 !

Post by gwheelo »

ref: Oregon UVN800 mounting.

I am under the impression the unit is to be mounted vertically. Mine is mounted vertically (however not transmitting data to my old 968 console) and displaying 11 and 12 on sunny days in July (North Eastern Spain).

gwheelo
Image
User avatar
avoorpool
Posts: 168
Joined: Tue 08 May 2012 4:24 pm
Weather Station: WMR200A
Operating System: Windows 10 64-bit
Location: Pickering, Ontario Canada
Contact:

Re: UV valor max 4 !

Post by avoorpool »

HI,

Seems a bit high to me. :o
According TEMIS (www.temis.nl) the UV Index has not been above 9.68 in July 2012 in Rome Italy (similar Lat (42o as your location).
Toronto has measured a few times a max UV of 10 in July (Lat 43o), similar to N.California / Milan Italy).
I can't find any specific installation instructions from Oregon in regards to the UVN800.

The site mentioned above (see UV Radiation) is interesting for daily UV forecast as well as previous dates/months/years for many locations in the World.

Cheers,

Arthur
User avatar
gwheelo
Posts: 453
Joined: Wed 11 Jun 2008 7:36 pm
Weather Station: WMR-88
Operating System: Windows 8.1
Location: L'Estartit, Spain
Contact:

Re: UV valor max 4 !

Post by gwheelo »

Seems a bit high to me
My 11 and 12 readings are from an inexpensive and non calibrated unit from Oregon - so please understand my point. Mounted vertically works!

gwheelo
Image
User avatar
gwheelo
Posts: 453
Joined: Wed 11 Jun 2008 7:36 pm
Weather Station: WMR-88
Operating System: Windows 8.1
Location: L'Estartit, Spain
Contact:

Re: UV valor max 4 !

Post by gwheelo »

Wall mount or stake apparatus for insertion into the ground.
UVN800_lg.jpg
The photo, the Oregon description, and the mounting bracket kinda makes me think of a vertical mounting posture.

gwheelo
You do not have the required permissions to view the files attached to this post.
Image
mildmuck
Posts: 11
Joined: Tue 03 Sep 2013 8:40 pm
Weather Station: WMR88
Operating System: Win 7
Location: Bromsgrove

Re: UV valor max 4 !

Post by mildmuck »

I have a UVN800 sensor that came with my oregon WMR88 and mounted it in a vertical postion using the bracket that came with it. Working well so far. Received a maximum of 4 today. Its been spot on with the met office forecasts in my area.
User avatar
holty1352
Posts: 14
Joined: Sat 19 Jan 2013 9:10 pm
Weather Station: WMR200A
Operating System: Windows 7
Location: Broadwater NSW Australia

Re: UV valor max 4 !

Post by holty1352 »

I have two that I swap from time to time to ensure I get a correct reading . They both work and are compatible with the Met predictions exactly . Today after a 32 day "rainless" period followed by 43.4 mm of rain 36 hours ago it is reading now 7. . This makes sense to me . :)
billygray
Posts: 21
Joined: Tue 15 Oct 2013 7:21 am
Weather Station: WMR88
Operating System: Windows 8
Location: Orihuela Costa, Spain

Re: UV valor max 4 !

Post by billygray »

I have the same UV sensor and it has worked fine since I installed it here in Spain at Christmas. The readings varied from 1 to 4 for months and I thought everything worked fine but we are in the middle of summer here in Spain where the local weather station says we are getting UV index of 10 today but my sensor will not go past 4 no matter how sunny it is, today it was really hot with clear skies and temperature of 44 deg C but still will not pass 4. Have I wasted my money or is there a fix for this.
Post Reply