Well, darn.  I don't have solar radiation on this station  yet, but can be added from prior research when I set it up.

My mistake, I should have known that.  My apologies, but I'll take education where ever I can find it.


Is there a place in the code that specifies the values and how it is calculated?

Dale


On 4/28/2023 5:09 PM, Tom Keffer wrote:
To calculate ET you need:

  * Outside temperature
  * Humidity
  * wind
  * solar radiation

Do you have everything? If any one of them is missing, you'll get a N/A.



On Fri, Apr 28, 2023 at 10:58 AM DR <wxe...@gmail.com> wrote:

    Perhaps I assumed too much, but my Rainwise IP-100 interface to
    the Rainwise station does not generate ET in hardware.

    I found where the hardware, software, or hardware preferred
    choices are in the configuration, and changed 'hardware preferred'
    to "software".

    In my Seasons.skin running WeeWx 4.5.1 for now.  After running for
    more than 24 hours, still get ET  N/A on that line.

    Maybe I can't get ET for this station.  It isn't too important,
    I'm not a professional farmer and just like watching that number
    when it is available.

    Is there more to enabling that value beyond just changing the
    source preference line?  Dale

    The configuration I was referencing was:

    [StdWXCalculate]
         [[Calculations]]
             pressure = prefer_hardware
             altimeter = prefer_hardware
             appTemp = prefer_hardware
             barometer = prefer_hardware
             cloudbase = prefer_hardware
             dewpoint = prefer_hardware
             ET = prefer_hardware
             heatindex = prefer_hardware
             humidex = prefer_hardware
             inDewpoint = prefer_hardware
             maxSolarRad = prefer_hardware
             rainRate = prefer_hardware
             windchill = prefer_hardware
             windrun = prefer_hardware

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