Mark Fraser <[email protected]> writes: >> So: >> Does the station have an illuminance sensor or an irradiance >> sensor? >> (Or both?) > > It is an Aercus WS3085 and it doesn't say what sensor it is using, the > display allows you to change the units from Lux, w/m2 or fc.
If there is only one sensor, that is simply wrong on the part of the station. I suggest asking customer support to fix their documentation. > The source code of RTL_433 shows this is how it is receiving light data: > // GETTING UV DATA > int uv_sensor_id = (br[1] << 4 & 0xf0) | (br[2] >> 4); > int uv_status_ok = br[3] == 85; > int uv_index = br[2] & 0x0F; > > // GETTING LIGHT DATA > int light = (br[4] << 16) | (br[5] << 8) | br[6]; > double lux = light * 0.1; > float wm; > if (preamble == SPB) > wm = (light / 1265.8f); > else //EPB > wm = (light / 6830.0f); That's indeed a clue that it has a lux sensor only. The "SPB/EPB" bit and the two values are interesting. The first one looks like sunlight at 1 Sun, but the comments that explain the rationale are missing :-( You'll also need to ask support to document their conversion from lux to W/m^2. Either that or ignore the display. -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/rmi5y7cwlcq.fsf%40s1.lexort.com.
