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Cumulus pressure calibration

Discussion specific to Fine Offset and similar rebadged weather stations
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Sailor
Posts: 3
Joined: Fri 09 Nov 2018 11:43 am
Weather Station: WS2083
Operating System: Windows XP SP3
Location: Exeter UK

Cumulus pressure calibration

Post by Sailor » Mon 12 Nov 2018 12:41 pm

I keep getting an error message about the offset I have to put on for a correct pressure reading on Cumulus. This offset of +8.80 then agrees with my console (WS2083) and the local airport approx 1 mile away.

Anyone else have this problem?

water01
Posts: 1488
Joined: Sat 13 Aug 2011 9:33 am
Weather Station: WH1081
Operating System: Windows 7 64bit HP SP1
Location: Somewhere in the USA
Contact:

Re: Cumulus pressure calibration

Post by water01 » Mon 12 Nov 2018 4:17 pm

You shouldn't have to use an offset if you have set your Fine Offset up correctly. I think you are not using the Relative reading, see this Wiki article. https://cumuluswiki.wxforum.net/a/FAQ#C ... et_console

Sailor
Posts: 3
Joined: Fri 09 Nov 2018 11:43 am
Weather Station: WS2083
Operating System: Windows XP SP3
Location: Exeter UK

Re: Cumulus pressure calibration

Post by Sailor » Wed 14 Nov 2018 2:44 pm

Thanks Dave01 for the info. I set the consol to relative pressure from absolute and the reading was 8.80 lower than the local met office. radio and various other sources. So whilst still in REL I changed the local display to the met office reading. Cumulus still needs the offset of +8.8 for the correct pressure reading.

Sailor
Posts: 3
Joined: Fri 09 Nov 2018 11:43 am
Weather Station: WS2083
Operating System: Windows XP SP3
Location: Exeter UK

Re: Cumulus pressure calibration

Post by Sailor » Wed 14 Nov 2018 7:53 pm

Finally managed to get my Aercus on relative pressure! Everything now ok with no offsets. Many thanks for you help. Much appreciated.

water01
Posts: 1488
Joined: Sat 13 Aug 2011 9:33 am
Weather Station: WH1081
Operating System: Windows 7 64bit HP SP1
Location: Somewhere in the USA
Contact:

Re: Cumulus pressure calibration

Post by water01 » Thu 15 Nov 2018 12:09 am

Great, thought it should work never had any problems on my Fine Offsets or rebadges, so I had a feeling that was what is was.

philcdav
Posts: 243
Joined: Tue 24 Jun 2008 9:43 pm
Weather Station: MyDEL WX2008 Mk2 Fine Offset
Operating System: XP and W7
Location: Maghull, nr Liverpool, UK
Contact:

Re: Cumulus pressure calibration

Post by philcdav » Thu 15 Nov 2018 7:12 pm

I frequently have to adjust the offset to match local pressure. My 1080 jumps as much as +/- 20 mB for some reason, usually accompanied by a 'USB failed' report. Just reset and jiggle the data
Phil - G0DOR

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