to calibrate your WS-1001 (Ambient version of the FineOffset/EcowittWH24
outdoor array and the WH1080 console) you could just follow the
instructions in https://www.wxforum.net/index.php?topic=40730.0 chapter 6
determine the offset and enter it accordingly (either an offest of
change the value, whatever the console wants --> manual).
METAR, airport etc. are secondary approaches for refinements which you
may or may not want to follow. There are lengthy and complex treatises
on that topic in the same forum, from simple to highly complex.
[by the way, if you have a European or international "version" of the
Ambient WS-1001 and call this a clone version, then that's very strange
wording as Ambient is the clone and not Fine Offset/Ecowitt = the
manufacturer]
but true, weewx should come to a proper result - and unless your station
also reports wrong absolute pressure (= local pressure) - or you display
the wrong variable/observation in your skin, then something is wrong
with weewx. Rather unlikely.
Did you read the barometer topic in the weewx online documentation ?
On 31.08.2023 10:29, Tomasz Lewicki wrote:
Rainer, Greg,
thank you both for thoughts and hints. Indeed, when I wrote "When
calculated by Weewx itself ("software" option enabled in weewx.conf),
my weather station shows 1001 hPa - still too low", I meant what Weewx
calculates and show on my webpage, not on console's display - display
is completely wrong in my opinion.
According to design of PWS, I own Ambient Weather WS-1001-WiFi clone.
I use HP-1000 driver. I don't know if it is designed wrong or not, but
I know that many people still use it.
Manual for my station say "To determine the relative pressure for your
location, locate an official reporting station near you (the internet
is the best source for real time barometer conditions, such as
Weather.com or Wunderground.com), and set your weather station to
match the official reporting station." I understand it, I should
calibrate PWS entering proper value from METAR for example.
But I still don't understand why Weewx, using "software" option for
calculating the sea-level (relative) pressure, shows too low value. As
I said, my station location AMSL in weewx.conf is "altitude = 550,
meter" (and for me it is neglible if it is 552 or 560; it is fraction
of 1 hPa). So the only way to show "real" value is to calibrate the
relative pressure (barometer in Weewx's terms) on the station's
display and set "prefer_hardware" in weewx.conf? I'm really confused.
Or maybe I have some units in weewx.conf messed up? I use metric
system so I entered meters when it was possible.
czwartek, 31 sierpnia 2023 o 02:39:14 UTC+2 Greg Troxel napisał(a):
from the wiki page I sent
For example, the FineOffset consoles can display either the station
pressure (called 'absolute' pressure) or the station pressure plus an
offset (called 'relative' pressure). T
So Fine Offset equipment just does pressure badly.
So get station pressure into weewx, do software from that, and
tape over
the "relative pressure" display on the console so nobody can see it!
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