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HOWTO: Adjust WeeWX when upgrading a Davis temp/humidity sensor

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noctilucent:
This is pretty straightforward but I figured I'd post it here to get it online and Google-able if someone else needs to do it: When replacing the temp/humidity sensor on a Davis weather station and going from an older 7346-166 (Sensiron SHT15) to the current 7346.070 (Sensiron SHT31), you need to add a temperature offset of -0.5C for the new sensor.  To do this:

--- Code: ---sudo vi /etc/weewx/weewx.conf
/\[\[Correct
  outTemp = outTemp - 0.5
:x
sudo /etc/init.d/weewx restart

--- End code ---
Keep an eye on whatever you're using to monitor the weather station stats and you'll see it jump by around 0.5C at the next update.

mcrossley:
You should make the adjustment in the station, then the console will read correctly - along with any other software like weewx that reads from it. It also means the dew point and wind chill will be calculated correctly.

noctilucent:
How do you make the adjustment in the station?  It's a sealed, non-user-adjustable device isn't it?

johnd:
Station = console + ISS (+ any supplementary transmitters/sensors). Offset adjustments are made to the console.

If you're not using a console, eg Weatherlink Live instead, then look at Advanced Settings in Device configuration on the browser interface online.

noctilucent:
I'm using an SDR to read data directly from the ISS, there's nothing between the ISS and WeeWX.

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