Author Topic: Stations that run too hot  (Read 2411 times)

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Offline azchrisf

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Stations that run too hot
« on: January 29, 2018, 04:53:35 PM »
Was browsing the WU map today and noticed that almost all of the usual suspects (*cough* Netatamo and Accurite *cough*) were overeporting temperatures 5-7 degrees. Netatamo's dont even have Wind or Rain gauges out of the box - how can they call that a "Weather Station"? More like a glorified thermometer to me.

What is it with these things? Just bad design or uninformed users? I know the Accurite is supposed to have a fan, but it seems like it doesn't do anything.
« Last Edit: January 29, 2018, 04:59:42 PM by azchrisf »
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Offline nincehelser

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Re: Stations that run too hot
« Reply #1 on: January 29, 2018, 04:59:08 PM »
Was browsing the WU map today and noticed that almost all of the usual suspects (*cough* Netatamo and Accurite *cough*) were overeporting temperatures 5-7 degrees.

What is it with these things? Just bad design or uninformed users? I know the Accurite is supposed to have a fan, but it seems like it doesn't do anything.

Really?  Wow.  Funny how mine work just fine.   :roll:

Offline azchrisf

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Re: Stations that run too hot
« Reply #2 on: January 29, 2018, 05:01:56 PM »
:-s :-k Well then I guess you would be the exception to the rule...I can see it all over the map compared to other stations...not to mention personal experience with one I had as my first station.
« Last Edit: January 29, 2018, 05:03:52 PM by azchrisf »
Davis Vantage Pro 2 Plus 6163 w/ 8 Transmitters!
Also doing Soil and Leaf 4x
WU: KAZGLEND106 CWOP: FW1398 (F1398) Purpleair: 98793/LAZGLEND8
My setup:
https://www.wxforum.net/index.php?topic=41867.0

Offline nincehelser

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Re: Stations that run too hot
« Reply #3 on: January 29, 2018, 05:04:41 PM »
:-s :-k Well then I guess you would be the exception to the rule...I can see it all over the map compared to other stations.

Yeah, yeah.  What a scientific way to come to conclusions about hardware.   :roll:

It's simply that a lot of people who buy things in walmart and costco just throw the things up and forget them.

If you know what you're doing and take proper steps, the hardware works fine.

It's clear you just want to stir things up, so I'm outta here.



« Last Edit: January 29, 2018, 05:08:33 PM by nincehelser »

Offline bob1955texas

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Re: Stations that run too hot
« Reply #4 on: January 29, 2018, 10:00:58 PM »
I agree with you Chris, those fans on the Acu-rite stations are useless. Mine was always 5 or 6 degrees hotter than the stations around me. The biggest problem is that all the sensors are inside the unit itself where all the heat can really build up. I threw mine in the garbage and got me a Davis Vantage Vue. The sensors are all on the outside of the unit where the air can get to them better. The Davis products might be a few dollars more, but, they are built so much better and I am a lot happier now that my readings are a lot more accurate.   :D    =D>

Offline azchrisf

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Re: Stations that run too hot
« Reply #5 on: January 29, 2018, 10:11:02 PM »
Bob I didn't think about that, now that I do it has a very tiny intake hole, not very much room to exhaust and like you said they are all crammed inside a case that isn't designed as a radiation shield like the others are. I think I'll take my thermal camera and see if it shows anything...

nincehesler -
Not looking to stir anything up but critical discussion. I would think it's a pretty good conclusion when you have a majority of stations displaying this problem, as well as user reviews, of this problem that it indicates it's more than just an opinion. Personal experience mirrors the opinion(s), but just for the sake of scientific analysis I will pull out my old one and do a "scientific" comparison with my aspirated VP2 and WS-1200 and some other instruments.
Davis Vantage Pro 2 Plus 6163 w/ 8 Transmitters!
Also doing Soil and Leaf 4x
WU: KAZGLEND106 CWOP: FW1398 (F1398) Purpleair: 98793/LAZGLEND8
My setup:
https://www.wxforum.net/index.php?topic=41867.0

Offline nincehelser

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Re: Stations that run too hot
« Reply #6 on: January 29, 2018, 10:15:15 PM »
nincehesler -
Not looking to stir anything up but critical discussion.

Yeah.  Right.  Just like your "tsk tsk" comment on the Acurite forum.

Offline WSWeather

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Re: Stations that run too hot
« Reply #7 on: January 30, 2018, 12:16:25 AM »
"It's clear you just want to stir things up, so I'm outta here."

I only see one person here "stirring things up".

As for the subject, in my area there are three Netatmo units reporting to WU located in the middle of about a dozen other stations within a couple miles and are always off by at least 3-5°F from the others, day or night.  I'm not saying the unit itself is inherently inaccurate but they are evidently extremely easy to set up incorrectly, which makes them less than useful.

Offline nincehelser

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Re: Stations that run too hot
« Reply #8 on: January 30, 2018, 12:18:43 AM »

I only see one person here "stirring things up".


And now I see another.  :roll:

Offline azchrisf

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Re: Stations that run too hot
« Reply #9 on: February 05, 2018, 09:21:09 AM »
I just ran a test with 3 different units for 48 hours. The Acurite 5 in 1 was consistently was off 2-5 degrees vs both a control and my Davis 24hr Aspirated.

Gets even worse during the day. The fact of the matter is that these units just aren't designed correctly and are, infact, inaccurate. They'll give you a general idea of the temperature outside but that's about it. 5 degrees is what I got, others have had higher (some based on poor placement I'm sure). Regardless of my measurements, there is a large degree of inaccuracy.

And I can't blame being in the hot Southwest, we've been getting lows in the 40s at night and still it's off 3-5 degrees.
To be fair, an Ambient Weather non-aspirated WS-1201 was off too by an average of 2 degrees, but never as much as the Acurite.

Sorry.

Davis Vantage Pro 2 Plus 6163 w/ 8 Transmitters!
Also doing Soil and Leaf 4x
WU: KAZGLEND106 CWOP: FW1398 (F1398) Purpleair: 98793/LAZGLEND8
My setup:
https://www.wxforum.net/index.php?topic=41867.0

Offline nincehelser

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Re: Stations that run too hot
« Reply #10 on: February 05, 2018, 10:00:29 AM »

drivel removed

Sorry.

Yeah, right.

That's what real scientists call "confirimation bias".

5 degrees off in during day?  3 to 5 degrees off at night?  You can't blame insolation for that.

« Last Edit: February 05, 2018, 10:17:19 AM by nincehelser »

Offline azchrisf

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Re: Stations that run too hot
« Reply #11 on: February 05, 2018, 10:31:24 AM »
Well nince it really wouldn't matter how I do the test because you've drank so much of the Accurite kool-aid it just can't possibly be true.

My results confirm what I and others already know. End of story.

Sent from my Pixel using Tapatalk

Davis Vantage Pro 2 Plus 6163 w/ 8 Transmitters!
Also doing Soil and Leaf 4x
WU: KAZGLEND106 CWOP: FW1398 (F1398) Purpleair: 98793/LAZGLEND8
My setup:
https://www.wxforum.net/index.php?topic=41867.0

Offline nincehelser

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Re: Stations that run too hot
« Reply #12 on: February 05, 2018, 10:33:05 AM »
Well nince it really wouldn't matter how I do the test because you've drank so much of the Accurite kool-aid it just can't possibly be true.

My results confirm what I and others already know. End of story.

Sent from my Pixel using Tapatalk

It doesn't take a genius to realize the sun doesn't shine at night.

Offline Jack Bowman

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Re: Stations that run too hot
« Reply #13 on: February 09, 2018, 05:09:57 PM »
Proper placement is everything. My Acurite 5in1 Weather Station and 2in1 Tower sensors are very accurate. It takes experimentation and trial and error to get optimal placement. A lot of folks just set it and forget it, and then there are those who continue to work toward accuracy. I do however agree that some weather stations have a tendency to be harder to place. The goal of the manufacture of the weather equipment should always strive for ease of use. Acurite is very responsive to its customer base in my past experience.
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Offline Old Tele man

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Re: Stations that run too hot
« Reply #14 on: February 09, 2018, 05:25:27 PM »
An analogy to remember: Just like "polyticks', all weather is 'local'! ! !
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Offline mmorris

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Re: Stations that run too hot
« Reply #15 on: February 10, 2018, 07:02:04 AM »
Back about 50 years ago I had a weather monitor II and the sensor was in a non fan shield mounted under the eaves on the north side. The only thing I had to do is install a piece of wood painted white about a foot away on the east and west sides of the sensor that made it so the sun couldn't get to the shield. So People either just don't care at all if they get a good reading or what they get is good enough for there house. It not like it takes a great deal of science just a little common sense..
« Last Edit: February 10, 2018, 09:57:41 AM by mmorris »
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Offline capeweather

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Re: Stations that run too hot
« Reply #16 on: February 10, 2018, 07:24:07 AM »
This thread has been flagged by the admins and is now being monitored. Please be mindful. If you cannot respect others on wxforum, please find another board / domain. Thank you.

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Offline mmorris

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Re: Stations that run too hot
« Reply #17 on: February 10, 2018, 07:39:32 AM »
Did I miss something here?? :?:

This thread has been flagged by the admins and is now being monitored. Please be mindful. If you cannot respect others on wxforum, please find another board / domain. Thank you.
>>Miles<<  By from Portage Lakes, OH.
Been using VWS since 1996 Ver# 14.01P43
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Win XP, Firefox, WXSIM, Cumulus, NexStorm, Yawcam, VVP, BadBlue Web server, Quake Catcher Net
Follow me on twitter
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Offline Jack Bowman

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Re: Stations that run too hot
« Reply #18 on: February 10, 2018, 09:20:34 AM »
Sorry if I offended. My bad. I do enjoy this topic though. Seems like I really had to work at getting my accuracy down with my station. I even looked for a local club for some help. I remember driving around "stalking" other folks weather stations at one point.  :lol:
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Offline capeweather

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Re: Stations that run too hot
« Reply #19 on: February 10, 2018, 09:40:32 AM »
We are not singling anyone out but we are getting reported posts based on how the tone is in some of these threads. This is the second one this week.

Chris
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Offline jcookjr82

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Re: Stations that run too hot
« Reply #20 on: February 15, 2018, 06:52:00 PM »
Nince makes a great point about people who just purchase from Costco, stick it wherever, connect it to WU, and forget about it. Unfortunately, some people have less pride about data than others. In my neighborhood, I am sandwiched between an Ambient station and an Acurite unit. Both stations have their flaws. The Ambient's barometer malfunctions every-other upload. The Acurite runs very hot during the day (and gets kicked off the map regularly) and runs very cold at night. I had a LaCrosse unit (a 2813 from Costco). I took the time to get a mast for the anemometer on the roof. I also purchased a radiation shield for the hygrometer. The rain gauge, I got a shelf and placed it on the top of the fence post, level, with bird spikes. My data was generally good, especially the temperature/humidity/pressure. I have been online with a Davis Vue for the last month, but my data is suffering because I chose to sacrifice temperature data with better wind accuracy. In the morning, my temperature shoots up when the sun rises and usually levels off with the other stations nearby by mid-morning. During the afternoon, it runs equal to or sometime slightly lower than neighboring stations. My CWOP ratings, which were very solid with my LaCrosse unit, are in the toilet somewhat with the Vue. The all-in-ones are a pick and choose compromise.

So, I think everyone in this thread has great points. We do not really know how others data is unless we actually see what steps they went through to mount their sensors. Based on my personal analysis, I would look to avoid any all-in-ones going forward, including the Davis Vue. It is what it is, but I did not have the money for a VP2. I will look to get that station sometime in the future so I can site the sensors appropriately.
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