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Temperature Sensor

Discussion specific to Davis weather stations
Altocumulus
Posts: 136
Joined: Sat 18 May 2013 1:58 pm
Weather Station: Davis Vantage Pro2 with Solar
Operating System: Windows 10 Home
Location: NE Scotland
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Temperature Sensor

Post by Altocumulus »

Has anyone changed their temperature sensor?

Prodata talk about an offset which is, presumably, a straightforward figure to add somewhere - but what and where?

I guess the new sensor replaces the existing - is it an easy - quick - job? :?:
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mcrossley
Posts: 12695
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Weather Station: Davis VP2/WLL
Operating System: Bullseye Lite rPi
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Re: Temperature Sensor

Post by mcrossley »

Yes, easy replacement. If you have an older ISS then the offset needs to be applied to your VP2 console...
  • Select TEMP
  • Press and release 2ND, then press and hold SET.
    After a moment, the variable you’ve selected begins to blink. Keep holding SET until the Calibration Offset message displays in the ticker.
    The ticker displays the current calibration offset.
  • Press the + and - keys to add or subtract from the temperature offset value.
  • Press DONE to exit calibration
Altocumulus
Posts: 136
Joined: Sat 18 May 2013 1:58 pm
Weather Station: Davis Vantage Pro2 with Solar
Operating System: Windows 10 Home
Location: NE Scotland
Contact:

Re: Temperature Sensor

Post by Altocumulus »

mcrossley wrote: Tue 19 Nov 2019 12:27 pm Yes, easy replacement. If you have an older ISS then the offset needs to be applied to your VP2 console...
  • Select TEMP
  • Press and release 2ND, then press and hold SET.
    After a moment, the variable you’ve selected begins to blink. Keep holding SET until the Calibration Offset message displays in the ticker.
    The ticker displays the current calibration offset.
  • Press the + and - keys to add or subtract from the temperature offset value.
  • Press DONE to exit calibration
Thank you Mark. :D

I've just watched (painfully) the pair of videos on the Davis site on how to replace the sensor. Looks straightforward enough :D

Not too sure on model age, it was purchased in 2011,

I have 6152UK on the console, with E J1 ZD the other three characters.
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mcrossley
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Re: Temperature Sensor

Post by mcrossley »

You will need the offset ;)
Altocumulus
Posts: 136
Joined: Sat 18 May 2013 1:58 pm
Weather Station: Davis Vantage Pro2 with Solar
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Re: Temperature Sensor

Post by Altocumulus »

Replaced.

Probably 15 minutes of work - having the fan assembly both hindered and helped!

The part taken out doesn't have a reference that corresponds to any of the sensors mentioned on the Prodata article. (Typical).

Should have placed the rain funnel on before installing battery; ended up with 58mm of rain! Corrected!

Thanks Mark, just to work out if and what offset is needed!
Altocumulus
Posts: 136
Joined: Sat 18 May 2013 1:58 pm
Weather Station: Davis Vantage Pro2 with Solar
Operating System: Windows 10 Home
Location: NE Scotland
Contact:

Re: Temperature Sensor

Post by Altocumulus »

I was able to correct the daily rainfall amount, on the console, back to zero. But how does one clear the Storm value? Using the same technique doesn't do anything.....
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mcrossley
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Re: Temperature Sensor

Post by mcrossley »

Currently you cannot reset the storm value. Only by stopping Cumulus, removing the bad data from the logs and restarting.
Altocumulus
Posts: 136
Joined: Sat 18 May 2013 1:58 pm
Weather Station: Davis Vantage Pro2 with Solar
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Location: NE Scotland
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Re: Temperature Sensor

Post by Altocumulus »

Hi Mark, it's the figure on the console that I am trying to change.
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mcrossley
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Re: Temperature Sensor

Post by mcrossley »

Ah, sorry, OK, no idea, if it's not in the user manual, then... anyone?
Altocumulus
Posts: 136
Joined: Sat 18 May 2013 1:58 pm
Weather Station: Davis Vantage Pro2 with Solar
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Re: Temperature Sensor

Post by Altocumulus »

Mark, I'll just leave it to work it out by itself. The records in Cumulus are the more important ones as far as my archive is concerned and Storm reference should clear from Cumulus within the next 24 hours.
I need to correct the data records at some stage.
I've found the buttons on the foot of the dayfile.txt (Cumulus Edit) - but I can't access them as they only just appear on the page (no matter how I realign/size the page) - perhaps it's a function of my netbook screen display? I'll have to use notepad.

After some confusion on what the offset is, it has been sorted.

:P
Altocumulus
Posts: 136
Joined: Sat 18 May 2013 1:58 pm
Weather Station: Davis Vantage Pro2 with Solar
Operating System: Windows 10 Home
Location: NE Scotland
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Re: Temperature Sensor

Post by Altocumulus »

A single instance of -67.8C last night suggests Global Warming isn't happening soon :twisted:
TwoTonTed
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Joined: Wed 26 Aug 2015 5:39 pm
Weather Station: Davis Vantage Vue
Operating System: Windows 11
Location: St Brides, Vale of Glamorgan

Re: Temperature Sensor

Post by TwoTonTed »

my Vantage Vue has suddenly stopped reporting temperature and humidity. Wind speed/rain ok.

Any ideas please?
RayProudfoot
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Re: Temperature Sensor

Post by RayProudfoot »

TwoTonTed wrote: Sat 28 Dec 2019 11:46 am my Vantage Vue has suddenly stopped reporting temperature and humidity. Wind speed/rain ok.

Any ideas please?
Almost certainly a failed temperature / humidity sensor. Contact your supplier who should be able to ship one. How old is your station?
Cheers,
Ray, Cheshire.

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TwoTonTed
Posts: 40
Joined: Wed 26 Aug 2015 5:39 pm
Weather Station: Davis Vantage Vue
Operating System: Windows 11
Location: St Brides, Vale of Glamorgan

Re: Temperature Sensor

Post by TwoTonTed »

thanks Ray

It was new in 2015 but has already had 2 new 'harnesses', one under warranty. Poor equipment resilience? I do live on a very exposed coastal location however, with strong winds and driving saline winds which probably dont help!
RayProudfoot
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Joined: Wed 06 May 2009 6:29 pm
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Re: Temperature Sensor

Post by RayProudfoot »

Hi Ted, the salt air is almost certainly the reason for the short life of the sensor. I remember Steve having the same problem when he lived in Orkney. Pity they don’t make them more resistant to salt air. :(
Cheers,
Ray, Cheshire.

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