Hi Nigel, The key is in how StdCalibrate works. From the Users Guide [StdCalibrate] <http://weewx.com/docs/usersguide.htm#StdCalibrate>:
"In a default configuration, calibrations are applied to observations from the hardware. They are not applied to derived calculations since the StdWXCalculate service runs after StdCalibrate." If you have a look at the Hardware Guide under Vantage <http://weewx.com/docs/hardware.htm#vantage_notes>(in the vantage station data table) you will see that the vantage driver gets barometer from the station hardware but pressure and altimeter are calculated in software. Hence you apply corrections to barometer for the vantage and not pressure or altimeter as they are derived. So when it comes to pressure the correction field you use really depends on the hardware. Gary On Thursday, 19 January 2017 07:59:52 UTC+10, Devonian wrote: > > I have a Davis VP2 station and am setting up my old WS2300 station for my > father to use. > > On the WS2300 I use a small correction for barometer in weewx.conf in > section StdCalibrate --> Corrections > I use *pressure = pressure + 0.02* and it corrects the web page reading > > However, if I use the same *pressure = pressure + 0.02* on my VP2 station > it is ignored and doesn't correct the reading > > Now, if I use *barometer = barometer + 0.02* it is recognised and the > correction applied. > > Possible bug somewhere? > > This is on two completely independent, clean setups/installs using weewx > setup.py v3.6.2 on a clean Debian Jessie headless install. > > Nigel. > -- 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]. For more options, visit https://groups.google.com/d/optout.
