I installed a different temperature sensor from another manufacturer today, at the same height as the Davis one.
I noticed a trend that the Davis is around 0.6°C higher.
I suddenly remembered, if you use the latest Davis temperature/humidity sensor with a sim board earlier than 2016, a -0.5°C offset needs to be applied at the console.
Now, when I used to use the old VP2 console and datalogger, I did add that offset to the console. However, I have been using the WLL since then, and I don't remember adding any offset, and I haven't added one to the new console either.
I'm guessing that I should've done? It would make sense..
I just need confirmation that the offset is still needed?!
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Latest Cumulus MX V4 release 4.4.2 (build 4085) - 12 March 2025
Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024
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(a patch is available for 1.9.4 build 1099 that extends the date range of drop-down menus to 2030)
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VP2 Temperature offset
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mcrossley
- Posts: 14382
- Joined: Thu 07 Jan 2010 9:44 pm
- Weather Station: Davis VP2/WLL
- Operating System: Bullseye Lite rPi
- Location: Wilmslow, Cheshire, UK
- Contact:
Re: VP2 Temperature offset
Yes, it's still needed because it is the SIM board that is reading incorrectly and then sending the data to whatever is listening.
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Mapantz
- Posts: 1992
- Joined: Sat 17 Dec 2011 11:55 am
- Weather Station: Davis Vantage Pro2
- Operating System: Windows 11 x64
- Location: Dorset - UK
- Contact:
Re: VP2 Temperature offset
I have done it now
I had an inkling for ages that it didn't seem right. I think I know why I didn't add it.
I've had 2 WLL's. I definitely did the offset on the first one, but I sent it back in exchange for a new one, as I had issues with it. I obviously forgot to add the offset when I got the new one.
Thanks Mark.
I had an inkling for ages that it didn't seem right. I think I know why I didn't add it.
I've had 2 WLL's. I definitely did the offset on the first one, but I sent it back in exchange for a new one, as I had issues with it. I obviously forgot to add the offset when I got the new one.
Thanks Mark.