Author Topic: Davis Weather Station Repair/Refurb Information  (Read 33424 times)

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Offline George Richardson

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Re: Davis Weather Station Repair/Refurb Information
« Reply #150 on: May 08, 2017, 08:34:58 AM »
"I may order the new sensor (is Scaled Instruments good?) just to have it, and then try to fix this one as a spare???
Any thoughts/ideas welcome."

Excellent!

Offline Bushman

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Re: Davis Weather Station Repair/Refurb Information
« Reply #151 on: May 08, 2017, 09:08:30 AM »
Ryan at Scaled Instruments is great!

Offline bcurry

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Re: Davis Weather Station Repair/Refurb Information
« Reply #152 on: May 08, 2017, 10:02:05 AM »
Thanks!
I have ordered a new T/H sensor from him and already received an e-mail back. Great stuff!
Now, if I can get my old one working by cleaning...I'd have a spare!

Cheers,
Bill


Offline JudinNorman

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Re: Davis Weather Station Repair/Refurb Information
« Reply #153 on: May 23, 2017, 12:38:45 PM »
Is the new sensor an SHT31 or older version?  If it's the new SHT31 how does its readings compare to older?
Jud

Thanks!
I have ordered a new T/H sensor from him and already received an e-mail back. Great stuff!
Now, if I can get my old one working by cleaning...I'd have a spare!

Cheers,
Bill




Online WheatonRon

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Re: Davis Weather Station Repair/Refurb Information
« Reply #155 on: May 23, 2017, 04:03:22 PM »
Elaborating on Jim's (CW2274) links, you will find the SHT31 a fantastic sensor, well worth the upgrade from prior models used by Davis. The accuracy and response rate is unbelievable to say the least.
Davis VP2 with Daytime FARS, SHT31 (2 complete systems-1 for uploading to the internet, the other system for test and play); Rainwise 111; CWOP--CW5020; WU--KILWHEAT17; CoCoRaHS--IL-DP-132

Offline JudinNorman

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Re: Davis Weather Station Repair/Refurb Information
« Reply #156 on: May 24, 2017, 01:19:27 PM »
You guys have convinced me to upgrade to the SHT31.
Jud

Offline CW2274

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Re: Davis Weather Station Repair/Refurb Information
« Reply #157 on: May 24, 2017, 04:12:23 PM »
You guys have convinced me to upgrade to the SHT31.
Jud
You'll need to check if the -0.9F offset will apply.
Davis Wireless VP2 SHT31 24hr 67CFM FARS
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Offline JudinNorman

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Re: Davis Weather Station Repair/Refurb Information
« Reply #158 on: May 25, 2017, 08:37:02 PM »
Yes I have confirmed I will need to enter an offset.

One thing that is confusing to me.  In the manual it says how to enter the offset yet I can do it through the weatherlink software as well,  it says to enter a temperature however.  To do the offset via the software I would assume for example the raw temp is 50.0 F, I would enter 49.1 ? 

Online WheatonRon

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Re: Davis Weather Station Repair/Refurb Information
« Reply #159 on: May 25, 2017, 08:58:56 PM »
How did you determine you need an offset? I believe the answer depends on the manufacturing date of your PCBA, correct? Did Davis support provide that answer? Just curious and hopefully your information will benefit other users in this Forum.

As to the specific question you asked, I think you are right but I will defer to someone that won't be guessing!
« Last Edit: May 25, 2017, 09:01:07 PM by WheatonRon »
Davis VP2 with Daytime FARS, SHT31 (2 complete systems-1 for uploading to the internet, the other system for test and play); Rainwise 111; CWOP--CW5020; WU--KILWHEAT17; CoCoRaHS--IL-DP-132

Offline CW2274

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Re: Davis Weather Station Repair/Refurb Information
« Reply #160 on: May 25, 2017, 09:45:50 PM »
Yes I have confirmed I will need to enter an offset.

One thing that is confusing to me.  In the manual it says how to enter the offset yet I can do it through the weatherlink software as well,  it says to enter a temperature however.  To do the offset via the software I would assume for example the raw temp is 50.0 F, I would enter 49.1 ?
If you do it through the console, there is zero doubt it's done correctly. WL tends makes it a little confusing, at least for me. #-o
Davis Wireless VP2 SHT31 24hr 67CFM FARS
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Offline ValentineWeather

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Re: Davis Weather Station Repair/Refurb Information
« Reply #161 on: May 25, 2017, 10:53:42 PM »
Yes I have confirmed I will need to enter an offset.

 To do the offset via the software I would assume for example the raw temp is 50.0 F, I would enter 49.1 ?


Yes
Randy, the Aviator is my father in 1963 with his Indian bike

Offline JudinNorman

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Re: Davis Weather Station Repair/Refurb Information
« Reply #162 on: May 26, 2017, 07:54:07 PM »
I called Davis tech support,  the tech asked me to go out to the ISS,  take solar panel off and read the code off to him.  He confirmed to me I would need a -0.9 F offset for the correct temperature reading. 
Very happy with Davis tech support.

Jud


How did you determine you need an offset? I believe the answer depends on the manufacturing date of your PCBA, correct? Did Davis support provide that answer? Just curious and hopefully your information will benefit other users in this Forum.

As to the specific question you asked, I think you are right but I will defer to someone that won't be guessing!

Online WheatonRon

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Re: Davis Weather Station Repair/Refurb Information
« Reply #163 on: May 26, 2017, 08:02:31 PM »
I called Davis tech support,  the tech asked me to go out to the ISS,  take solar panel off and read the code off to him.  He confirmed to me I would need a -0.9 F offset for the correct temperature reading. 
Very happy with Davis tech support.

Jud


How did you determine you need an offset? I believe the answer depends on the manufacturing date of your PCBA, correct? Did Davis support provide that answer? Just curious and hopefully your information will benefit other users in this Forum.

As to the specific question you asked, I think you are right but I will defer to someone that won't be guessing!

Thanks Jud. I believe the code you read to Davis support could tell them when your PCBA was assembled. If before January 1, 2016, an offset is required, if after, no offset. I have found Davis telephone support pretty good over the years, the downside is the long wait time on hold, and they seem to have fairly high turnover in that group although the manager, Brett Lane, has been there quite awhile and does a good job.
« Last Edit: May 26, 2017, 08:04:20 PM by WheatonRon »
Davis VP2 with Daytime FARS, SHT31 (2 complete systems-1 for uploading to the internet, the other system for test and play); Rainwise 111; CWOP--CW5020; WU--KILWHEAT17; CoCoRaHS--IL-DP-132

Offline ayde_bury

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Re: Davis Weather Station Repair/Refurb Information
« Reply #164 on: May 27, 2017, 12:57:34 PM »
The manufacture date of your PCB can be determined by the first 6 numbers after the two letters. For example a ISS transmitter with a code of AZ1308010001 would be manufactured in year 13 (2013) month 08 (August) 01 (day 1).

This tends to apply to most Davis equipment.

The only time of course this would not apply if someone has replaced the PCB within the case and then used the old internal cover - which is a rarity, but something I have seen. New January 2016 PCBs also tend to have a small white sticker with 2.5 on them rather than an earlier number.
« Last Edit: May 28, 2017, 01:29:45 PM by ayde_bury »
Weather Spares - your one stop shop for complete stations, accessories and spare parts for Davis Instruments, Oregon Scientific, TFA, Ventus, Alecto and many more - http://www.weatherspares.co.uk/ offering global shipping of products.

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Location 95m altitude, West of Bury St Edmunds, Suffolk, UK.


Offline JudinNorman

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Re: Davis Weather Station Repair/Refurb Information
« Reply #165 on: June 01, 2017, 06:00:19 PM »
I installed the new SHT31 sensor for my Vantage Pro 2 with a -0.9F offset in console.  I'm impressed with the humidity reading already compared to my old sensor with low humidity,  my old sensor had a hard time going much below 30%,  been around 20% this afternoon.

With my old sensor should I return to Davis for calibration? Keep as a spare?

Offline CW2274

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Re: Davis Weather Station Repair/Refurb Information
« Reply #166 on: June 01, 2017, 06:20:07 PM »
I installed the new SHT31 sensor for my Vantage Pro 2 with a -0.9F offset in console.  I'm impressed with the humidity reading already compared to my old sensor with low humidity,  my old sensor had a hard time going much below 30%,  been around 20% this afternoon.

With my old sensor should I return to Davis for calibration? Keep as a spare?
Your old sensor has probably drifted to the point of chucking it, there is no re-calibration that I'm aware of. Doubt it would be cost effective even if it could be.
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Offline ValentineWeather

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Re: Davis Weather Station Repair/Refurb Information
« Reply #167 on: June 01, 2017, 07:11:27 PM »
You might be able to regenerate the humidity sensor.
Going from memory it needed to be saturated in a certain type of bag with wet rag for some period of time and maybe even baked in oven. 
It was along time ago and memory isn't getting better and its probably not worth the time considering replacement cost. Here is a link on humidity sensors you might find the information.

https://www.sensirion.com/en/environmental-sensors/all-documents-of-sensirions-humidity-sensors-for-download/
Randy, the Aviator is my father in 1963 with his Indian bike

Offline WXman

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Re: Davis Weather Station Repair/Refurb Information
« Reply #168 on: September 05, 2017, 10:08:49 AM »
Ok, so it's been less than 12 months since I had mine refurbished.  My anemometer has already died.  The console will read direction but not velocity.  The wind cups are spinning freely, so my guess is a dead reed switch inside the anemometer unit.   ](*,)

Does anyone know what kind of warranty Davis gives with the refurbish service?  I'm hoping they'll take care of this for me since it's been less than a year.
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Offline dalecoy

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Re: Davis Weather Station Repair/Refurb Information
« Reply #169 on: September 05, 2017, 12:26:57 PM »
Ok, so it's been less than 12 months since I had mine refurbished.  My anemometer has already died.  The console will read direction but not velocity.  The wind cups are spinning freely, so my guess is a dead reed switch inside the anemometer unit.   ](*,)

Have you already tried the measures listed in the ISS manual (page 27, I think)?

And what do the console diagnostics say about the switch closures?

Offline WXman

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Re: Davis Weather Station Repair/Refurb Information
« Reply #170 on: September 05, 2017, 12:43:36 PM »
Ok, so it's been less than 12 months since I had mine refurbished.  My anemometer has already died.  The console will read direction but not velocity.  The wind cups are spinning freely, so my guess is a dead reed switch inside the anemometer unit.   ](*,)

Have you already tried the measures listed in the ISS manual (page 27, I think)?

And what do the console diagnostics say about the switch closures?

I haven't checked the diagnostic screen yet.  I will take a look at it this afternoon.
B.S. in Meteorology/Climatology

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Davis Vantage Pro 2 wireless station
Hoping to get it online soon!

Offline WXman

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Re: Davis Weather Station Repair/Refurb Information
« Reply #171 on: September 09, 2017, 06:35:42 PM »
My diagnostic screen shows the switch open every 2 seconds.  My cups seem to still be tight on the anemometer spindle.  They spin freely.  Battery voltage is 3.0 volts at the ISS.  No nicks or cuts in the anemometer wire visible.  But I'm still getting direction and not speed. 

Any other ideas?  Davis is no help...said the refurbish only has a 90 day warranty which is terrible for $200.
B.S. in Meteorology/Climatology

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Davis Vantage Pro 2 wireless station
Hoping to get it online soon!

Offline George Richardson

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Re: Davis Weather Station Repair/Refurb Information
« Reply #172 on: September 10, 2017, 02:24:51 PM »
NEW: Scaled Instruments
Davis 6410 Anemometer for Vantage Pro2 & Vantage Pro $135.00  ($105.00)

Offline dalecoy

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Re: Davis Weather Station Repair/Refurb Information
« Reply #173 on: September 10, 2017, 03:45:05 PM »
My diagnostic screen shows the switch open every 2 seconds. 

Please explain how you see that.  Is the "times open" counter increasing by one every 2 seconds?  And the "times closed" counter not increasing at all?  Or what?

Have you tried the suggestion from the manual to
"Remove the cups from the anemometer (loosen the set screw). Put the cups back onto the shaft and make sure to slide them up the shaft as far as possible."
« Last Edit: September 10, 2017, 04:26:56 PM by dalecoy »