[weewx-user] Re: HP 1000 and UV-Index

2018-03-13 Thread RothMa
Hello Susan, Thanks for the answer. I am experimenting with the "StdCalibrate" section in the weewx.conf. A comparison of the reported values with the UV index according to the console showed the following: 0 = uv <= 100 uW / cm² 1 = uv> 100 uW / cm² <= 450 uW / cm² 2 = uv> 450 uW / cm² <= 900 uW

[weewx-user] Re: HP 1000 and UV-Index

2018-03-12 Thread vk3anz
In my HP1000 weewx driver, I use the formula (in Python) int(round(data_value)/256) where data_value is the value I read directly from the device itself. The resulting values seem to match those displayed on the console itself. Susan -- You received this message because you are subscribed to the

[weewx-user] Re: HP 1000 and UV-Index

2018-03-11 Thread RothMa
Hello Vince, Thanks for the answer. I think it's not easy to convert. In your link, I read, "The index is equal to the EAS-weighted irradiance (in watts / m²) x 40. An index of 10 corresponds to an EAS-weighted irradiance of 0.25 W / m², but if I convert my values this does not fit the index o

[weewx-user] Re: HP 1000 and UV-Index

2018-03-10 Thread vince
On Saturday, March 10, 2018 at 9:29:11 AM UTC-8, RothMa wrote: > > How can I calculate from uW per square centimeter to "UV Index" and how > can I configure weewx for it? > > Some quick googling seems to say it might be a little complicated, but I did find one Davis link that might help... Does