Author Topic: Comparison of Pricier Weather Stations to Davis VP2  (Read 646 times)

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Offline galfert

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Comparison of Pricier Weather Stations to Davis VP2
« on: October 19, 2018, 01:13:05 PM »
I'd like someone to do a comparison of Vaisala, Rainwise, RM Young, and Davis. Maybe even include anything else in this higher category that I may have missed (like Peet Bros if they still mater...etc.) They should be ranked on different categories. These brands (other than Davis) remain a mystery to me. You don't hear about them much in this forum other than someone just throwing the name out for some argument sake.

For example the comparison list should look something like:

Price (highest price to least):
Brand 4
Brand 2
Brand 1 (notes)
Brand 3

Features, Software options, Connectivity:
Brand 4 (notes)
Brand 1
Brand 2
Brand 3 (notes)

Reliability:
Brand 3
Brand 1
Brand 2 (notes)
Brand 4

Cost to maintain (replacement part costs and availability for DIY):
Brand 1 (notes)
Brand 2
Brand 3 (notes)
Brand 4 (notes)

Then some interesting bits of information where applicable regarding each would be nice. Maybe corroborating summary info of each to justify the ranking. I realize these manufactures probably make different models. I would take the best that each has to offer or the most logical or popular choice for each.

I'm not expecting everyone to agree. But I'd at least get some semblance of where they might rank and the pros and cons of each. I don't want to start a flame war. Please don't attack others that you disagree with. And if you know anything about these other brands, specially if you have worked with them, then let us know your thoughts without fearing any backlash. This isn't about putting down any other brand. I'm sure for all of these since they all have fame are worthy. I'd just like to know a bit more about each and how they compare and what their strengths are.

Why is Davis even in this list? As a known control variable.
« Last Edit: October 19, 2018, 01:29:20 PM by galfert »
WS-2902A | ObserverIP | WeatherBridge (Meteobridge)
WU: KFLWINTE111  |  PWSweather: KFLWINTE111
CWOP: FW3708  |  AWEKAS: 14814
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Offline miraculon

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Re: Comparison of Pricier Weather Stations to Davis VP2
« Reply #1 on: October 19, 2018, 02:05:38 PM »
For brands, you could add Dyacon. They look interesting. Maybe TxWx as well? My earlier station from Dallas Semiconductor used the mechanicals from TxWx (WRL Series), but had the DalSemi electronics to demonstrate the 1-Wire hardware. The anemometer/vane and rain gauge held up quite well and I used them for many years. I finally replaced the bearings in the wind set.

Also, for the categories, some thing like "scalability" or "expandability" for adding additional sensors and functions would be good to know.

Good luck with the chart.

Greg H.






Blitzortung Stations #706 and #1682
CoCoRaHS: MI-PI-1
CWOP: CW4114 and KE8DAF-13
WU: KMIROGER7
Amateur Radio Callsign: KE8DAF

Offline ValentineWeather

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Re: Comparison of Pricier Weather Stations to Davis VP2
« Reply #2 on: October 19, 2018, 02:06:38 PM »
I'm pretty much stuck with Davis not only price point but communication is a must. Website, CWOP, WU
 
There is one professional grade https://dyacon.com/product-category/weather-stations which does communicate directly with WU but no idea how to make it work with website.
Randy

Offline Old Tele man

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Re: Comparison of Pricier Weather Stations to Davis VP2
« Reply #3 on: October 19, 2018, 02:28:41 PM »
Might want to ask WHERE/IF wx data to be sent:

1) Send it to CWOP only?
2) Send it to only your own website?
3) Send it to everybody?
4) Don't want to / can't send it anywhere!
« Last Edit: October 19, 2018, 02:33:13 PM by Old Tele man »
SYS: Davis VP2 Vue/WL-IP & Envoy8X/WL-USB;
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CWOP: DW6988 - 2 miles NNE of Cortaro, AZ
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Offline Bushman

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Re: Comparison of Pricier Weather Stations to Davis VP2
« Reply #4 on: October 19, 2018, 03:35:53 PM »
When I win the Powerball, I am getting a full Vaisala setup!  :)

Offline Old Tele man

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Re: Comparison of Pricier Weather Stations to Davis VP2
« Reply #5 on: October 19, 2018, 04:14:02 PM »
When I win the Powerball, I am getting a full Vaisala setup!  :)

Uh, that would be top (#4) on the PRICE list (wink,wink)?
SYS: Davis VP2 Vue/WL-IP & Envoy8X/WL-USB;
DBX1 Precision Digital Barograph
CWOP: DW6988 - 2 miles NNE of Cortaro, AZ
WU - KAZTUCSO202, Countryside

Offline stormtracker

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Re: Comparison of Pricier Weather Stations to Davis VP2
« Reply #6 on: October 31, 2018, 11:03:42 AM »
I think an important caveat to rankings would be some delineation between the different pro's and con's and features of the named stations.  For instance, wired or wireless and the advantages of each.  Personally, a wireless station is far better for all parameters EXCEPT wind.  I happen to live in a low wind area so I am not worried about wind readings, although I do maintain a Maximum Vigilant in the event of a storm gust.  In windy areas, no wireless station can compare to the instantaneous readings of a wired station.  What about lightning and other perils?   In a heavy lightning region, wireless might be better unless you are an expert at grounding.  Anyway, I might respectfully suggest that rankings be broken down into wired or wireless, cost, internet capability, etc...

Offline ValentineWeather

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Re: Comparison of Pricier Weather Stations to Davis VP2
« Reply #7 on: October 31, 2018, 11:41:15 AM »
I never understood why some are stuck on instantaneous wind speeds. It's never made sense to me why a few second delay mattered in fact I like it that way, brings attention to console so I can visually watch.
Randy

Offline stormtracker

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Re: Comparison of Pricier Weather Stations to Davis VP2
« Reply #8 on: October 31, 2018, 12:20:14 PM »
I never understood why some are stuck on instantaneous wind speeds. It's never made sense to me why a few second delay mattered in fact I like it that way, brings attention to console so I can visually watch.

The ONLY need I can see, for instantaneous wind speed, is in the instance of a storm peak gust which may be missed by a wireless set.

Offline ValentineWeather

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Re: Comparison of Pricier Weather Stations to Davis VP2
« Reply #9 on: October 31, 2018, 12:34:05 PM »
I never understood why some are stuck on instantaneous wind speeds. It's never made sense to me why a few second delay mattered in fact I like it that way, brings attention to console so I can visually watch.

The ONLY need I can see, for instantaneous wind speed, is in the instance of a storm peak gust which may be missed by a wireless set.

Davis units are pretty good. I have 2 consoles Vue and Pro with both catching the same peak wind speeds off same anemometer but I can see where some brands may not be as reliable when it comes to wireless.
Randy

Offline galfert

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Re: Comparison of Pricier Weather Stations to Davis VP2
« Reply #10 on: October 31, 2018, 12:37:10 PM »
I never understood why some are stuck on instantaneous wind speeds. It's never made sense to me why a few second delay mattered in fact I like it that way, brings attention to console so I can visually watch.

The ONLY need I can see, for instantaneous wind speed, is in the instance of a storm peak gust which may be missed by a wireless set.

I don't think it works that way. I don't see why there should be a difference between cabled or wireless. In either case there is internal electronics in the anemometer sensor which is the same on wireless and cabled system say a Davis VP2. The only difference should be in transmission method. But in either case a calculation has to happen to measure speed. Speed is the difference in distance per unit time. If you only have one data point you can't determine speed. You have to move to have speed. That move is then at least 2 data points. How far did it move in a measured time span? That determines speed. Therefore the speed is calculated even before it gets transmitted wirelessly or cabled. How frequently the wireless updates and gives instantaneous speed versus cabled should not matter. I don't see why wireless could not be just as instantaneous.

I'm not saying you are wrong and I'm right. I'm just trying to rationalize what you are proposing and I'm disagreeing based on my thought process. Now it could very well be that a wireless system was designed to send speed less often than a cabled system. I dont know for example if this is the case between the VP2 wireless vs cabled. If this is the case then that was a Davis engineering decision but it is not a decision that was limited by technology of wireless vs cabled. Maybe is was an energy saving method. If so the next version may solve this.

So does the VP2 cabled send wind speed more frequently to the console?
« Last Edit: October 31, 2018, 12:44:55 PM by galfert »
WS-2902A | ObserverIP | WeatherBridge (Meteobridge)
WU: KFLWINTE111  |  PWSweather: KFLWINTE111
CWOP: FW3708  |  AWEKAS: 14814
Tele-Pole flag pole is here (not installed yet)

Offline stormtracker

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Re: Comparison of Pricier Weather Stations to Davis VP2
« Reply #11 on: October 31, 2018, 12:53:14 PM »
I wish I really knew.   Unfortunately, I do not have the background to know exactly what is going on.  I just wonder in some of the entry level units, if the circuitry is there to monitor wind between polling?   It would seem that option would really run up the cost...

Offline CW2274

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Re: Comparison of Pricier Weather Stations to Davis VP2
« Reply #12 on: October 31, 2018, 01:09:20 PM »
I never understood why some are stuck on instantaneous wind speeds. It's never made sense to me why a few second delay mattered in fact I like it that way, brings attention to console so I can visually watch.

The ONLY need I can see, for instantaneous wind speed, is in the instance of a storm peak gust which may be missed by a wireless set.
So does the VP2 cabled send wind speed more frequently to the console?
No.