WXforum.net
Miscellaneous Debris => For Sale/Wanted => Topic started by: Lucy on June 27, 2018, 03:27:43 AM
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Hello, everyone
I'm working for Ecowitt, which is a new brand focusing on weather instruments. You can visit our website to know more: http://www.ecowitt.com/
We currently need some video reviews for our new released weather stations:
Product One: HP3500B TFT Screen WI-FI Weather Station
Amazon Link: https://www.amazon.com/dp/B079NTF6QS
Features:
Professional Wifi Weather Station
Supports uploads to WU/Weathercloud/WOW
7-in-1 Solar Powered Outdoor Sensor
TFT Color Display
Weather App & PC Software
Graph Display on The Console
Product Two: WH2320E Large Screen WI-FI Weather Station
Amazon Link: https://www.amazon.com/dp/B0792WD1GP
Features:
Large Display WIFI Professional Weather Station
with solar powered 7-in-1 outdoor sensor
Supports uploads to WU/Weathercloud/WOW
Product Three: WH6006E Professional 3G Cellular Wireless Weather Station
Amazon Link: https://www.amazon.com/dp/B07D21SFCS
Features:
working based on WCDMA /GSM network
supports uploads to WU, WeatherCloud and WOW
or your own website
(need to have the same protocol with http://www.wundergound.com )
receives weather condition and alerts via SMS
You can visit the links for more information.
If you're interested on one of them, we can send you one for free to exchange an honest video product review(to publish on youtube). PM me, please.
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Hello, everyone
I'm working for Ecowitt, which is a new brand focusing on weather instruments. You can visit our website to know more: http://www.ecowitt.com/ (http://www.ecowitt.com/)
We currently need some video reviews for our new released weather stations:
Product One: HP3500B TFT Screen WI-FI Weather Station
Amazon Link: https://www.amazon.com/dp/B079NTF6QS (https://www.amazon.com/dp/B079NTF6QS)
Features:
Professional Wifi Weather Station
Supports uploads to WU/Weathercloud/WOW
7-in-1 Solar Powered Outdoor Sensor
TFT Color Display
Weather App & PC Software
Graph Display on The Console
Product Two: WH2320E Large Screen WI-FI Weather Station
Amazon Link: https://www.amazon.com/dp/B0792WD1GP (https://www.amazon.com/dp/B0792WD1GP)
Features:
Large Display WIFI Professional Weather Station
with solar powered 7-in-1 outdoor sensor
Supports uploads to WU/Weathercloud/WOW
Product Three: WH6006E Professional 3G Cellular Wireless Weather Station
Amazon Link: https://www.amazon.com/dp/B07D21SFCS (https://www.amazon.com/dp/B07D21SFCS)
Features:
working based on WCDMA /GSM network
supports uploads to WU, WeatherCloud and WOW
or your own website
(need to have the same protocol with http://www.wundergound.com (http://www.wundergound.com) )
receives weather condition and alerts via SMS
You can visit the links for more information.
If you're interested on one of them, we can send you one for free to exchange an honest video product review(to publish on youtube). PM me, please.
I will need to learn how to use YouTube...
Paul
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Thanks for your support. :-)
Already sent you a mail. Please check. :-)
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These are the same ones Ambient sells. Are you the mfg.?
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Looks and specs like every other entry level PWS, dime a dozen.
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Fine Offset
http://www.foshk.com/Weather_Professional/
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How well does it handle high UV without fan aspiration? The heat shield doesn't look very substantial.
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These are the same ones Ambient sells. Are you the mfg.?
Not same. We have different display console and sensor array.
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How well does it handle high UV without fan aspiration? The heat shield doesn't look very substantial.
Hello, the outdoor sensor has a radiation shield and the structure design will avoid the situation you mentioned.
The material is durable and firm.
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These are the same ones Ambient sells. Are you the mfg.?
Not same. We have different display console and sensor array.
Console maybe, but the hardware sure looks identical!
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How well does it handle high UV without fan aspiration? The heat shield doesn't look very substantial.
Perhaps I'm misreading your question --- but UV and Temp are two different sensors and they're in two different locations.
Temperature sensor is under the shield. it is not fan aspirated.
(Ecowitt, that would be a great feature to offer for better accuracy, especially in areas where normal sunlight is extreme).
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How well does it handle high UV without fan aspiration? The heat shield doesn't look very substantial.
Perhaps I'm misreading your question --- but UV and Temp are two different sensors and they're in two different locations.
Temperature sensor is under the shield. it is not fan aspirated.
(Ecowitt, that would be a great feature to offer for better accuracy, especially in areas where normal sunlight is extreme).
What I meant-- when the sun is very strong, (high UV/high solar radiation) how accurate is the temperature sensor? Does it give elevated readings during those high UV periods when the sun is heating up the unit and nothing is pulling ambient air past the sensor or is that shield effective at keeping the sensor insulated from the direct rays?
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Fine Offset
http://www.foshk.com/Weather_Professional/
Now, this could be meant a tongue in cheek comment.... but.... just in case...
The site listed is either down, no longer exists, or is getting blocked from USA.... It IS/was a real site, which is owned by XIN NET Tech Corp which appears to be a Telecom company in Beijing, most likely their equivalent of an ISP.
I did note however that on Alibaba, this company (FOSHK) seems to have entries for weather stations that look amazingly like both Ambient and Ecowitt.... Whether or not they are the actual devices is not known, however it does play against (or for depending on your viewpoint) that all of these are made by the same company using different OEM labeling.
That in itself isn't an unusual practice as I see it across many different products from just as many different "companies".
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How well does it handle high UV without fan aspiration? The heat shield doesn't look very substantial.
Perhaps I'm misreading your question --- but UV and Temp are two different sensors and they're in two different locations.
Temperature sensor is under the shield. it is not fan aspirated.
(Ecowitt, that would be a great feature to offer for better accuracy, especially in areas where normal sunlight is extreme).
What I meant-- when the sun is very strong, (high UV/high solar radiation) how accurate is the temperature sensor? Does it give elevated readings during those high UV periods when the sun is heating up the unit and nothing is pulling ambient air past the sensor or is that shield effective at keeping the sensor insulated from the direct rays?
Don't kid yourself, there's no such thing as a passive shield that's more effective than an aspirated one, especially when the wind is light. This thing is no different, especially for an entry level PWS.
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@OKKweather - the FO site works just fine for me. And yeah, dopplegangers. :)
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How well does it handle high UV without fan aspiration? The heat shield doesn't look very substantial.
Perhaps I'm misreading your question --- but UV and Temp are two different sensors and they're in two different locations.
Temperature sensor is under the shield. it is not fan aspirated.
(Ecowitt, that would be a great feature to offer for better accuracy, especially in areas where normal sunlight is extreme).
What I meant-- when the sun is very strong, (high UV/high solar radiation) how accurate is the temperature sensor? Does it give elevated readings during those high UV periods when the sun is heating up the unit and nothing is pulling ambient air past the sensor or is that shield effective at keeping the sensor insulated from the direct rays?
Don't kid yourself, there's no such thing as a passive shield that's more effective than an aspirated one, especially when the wind is light. This thing is no different, especially for an entry level PWS.
I would concur that temperature accuracy will take a hit without a fan to aspirate thru the shield. I don't think there was an implication stated that a non-aspirated shield could yield.
I can say, since I own the HB3500 that I compared it against a NIST calibrated temp and humidity sensor, and the temp was only about 1.5deg off from the NIST calibrated sensor, that it's not so bad at least in the one I have.
Humidity, since I noted it here consistently about 1%-3% off on the high side. There are adjustments that could be used to attempt to compensate for either difference if desired, but I would do more tests before I made changes, and honestly, just because of the numbers I see, doesn't mean another would would be exactly the same as mine, especially if it came from a different lot build.
For non-professional uses, I think this would be close enough. With these types of weather stations, even a Davis which is typically known for its high level of build and accuracy , and costs a whole lot more even at the entry levels, are all about the same. Davis of course has high end advantages or options over this model/brand or the other popular "A" named companies.
So, yes, in the realm of PWS, and especially entry level, it's all a case of what exactly do you want it to be good at, because entry level anything is build in some way by cutting one corner or more to lower the costs and still have something that isn't going to fly back as a return as quickly as it went out. Although, admittedly, that scenario does seem to be a more common thing happening regardless of what product you're talking about.
If you want NOAA precision, you don't purchase a PWS.... unless you're independently wealthy. On the other hand you do want something that's pretty accurate for the major things you're monitoring. Wind speed, direction, temp, humidity.
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What's an HB3500?
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What's an HB3500?
A typo.... Should be HP3500B Ecowitt HP3500B to be complete.
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How well does it handle high UV without fan aspiration? The heat shield doesn't look very substantial.
Perhaps I'm misreading your question --- but UV and Temp are two different sensors and they're in two different locations.
Temperature sensor is under the shield. it is not fan aspirated.
(Ecowitt, that would be a great feature to offer for better accuracy, especially in areas where normal sunlight is extreme).
What I meant-- when the sun is very strong, (high UV/high solar radiation) how accurate is the temperature sensor? Does it give elevated readings during those high UV periods when the sun is heating up the unit and nothing is pulling ambient air past the sensor or is that shield effective at keeping the sensor insulated from the direct rays?
Don't kid yourself, there's no such thing as a passive shield that's more effective than an aspirated one, especially when the wind is light. This thing is no different, especially for an entry level PWS.
With these types of weather stations, even a Davis which is typically known for its high level of build and accuracy , and costs a whole lot more even at the entry levels, are all about the same.
No offense, but not even in the same zip code. You get what you pay for.
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How well does it handle high UV without fan aspiration? The heat shield doesn't look very substantial.
Perhaps I'm misreading your question --- but UV and Temp are two different sensors and they're in two different locations.
Temperature sensor is under the shield. it is not fan aspirated.
(Ecowitt, that would be a great feature to offer for better accuracy, especially in areas where normal sunlight is extreme).
What I meant-- when the sun is very strong, (high UV/high solar radiation) how accurate is the temperature sensor? Does it give elevated readings during those high UV periods when the sun is heating up the unit and nothing is pulling ambient air past the sensor or is that shield effective at keeping the sensor insulated from the direct rays?
Don't kid yourself, there's no such thing as a passive shield that's more effective than an aspirated one, especially when the wind is light. This thing is no different, especially for an entry level PWS.
I would concur that temperature accuracy will take a hit without a fan to aspirate thru the shield. I don't think there was an implication stated that a non-aspirated shield could yield.
I can say, since I own the HB3500 that I compared it against a NIST calibrated temp and humidity sensor, and the temp was only about 1.5deg off from the NIST calibrated sensor, that it's not so bad at least in the one I have.
Humidity, since I noted it here consistently about 1%-3% off on the high side. There are adjustments that could be used to attempt to compensate for either difference if desired, but I would do more tests before I made changes, and honestly, just because of the numbers I see, doesn't mean another would would be exactly the same as mine, especially if it came from a different lot build.
For non-professional uses, I think this would be close enough. With these types of weather stations, even a Davis which is typically known for its high level of build and accuracy , and costs a whole lot more even at the entry levels, are all about the same. Davis of course has high end advantages or options over this model/brand or the other popular "A" named companies.
So, yes, in the realm of PWS, and especially entry level, it's all a case of what exactly do you want it to be good at, because entry level anything is build in some way by cutting one corner or more to lower the costs and still have something that isn't going to fly back as a return as quickly as it went out. Although, admittedly, that scenario does seem to be a more common thing happening regardless of what product you're talking about.
If you want NOAA precision, you don't purchase a PWS.... unless you're independently wealthy. On the other hand you do want something that's pretty accurate for the major things you're monitoring. Wind speed, direction, temp, humidity.
I wasn't expecting NOAA precision from this unit but since the typical unaspirated pws has problems with temp. spikes when the sun is radiating strongly on the unit I was curious if this product was somehow better than a typical unaspirated unit. Your results of a 1.5 degree spike as compared to your NIST calibrated temp humidity sensor is pretty good. Do you have any more data regarding these tests? Also, what was the sun intensity when you did these tests, location (latitude), time of year, and what type of NIST temp/humidity sensors were used?
Thanks for any additional data on this comparison. It might shed some "light" on whether this product is worth checking out.
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Yes, it's old, but still relevant. https://www.davisinstruments.com/product_documents/weather/app_notes/AN_24-temp-radiation-shield-comparison.pdf
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I wasn't expecting NOAA precision from this unit but since the typical unaspirated pws has problems with temp. spikes when the sun is radiating strongly on the unit I was curious if this product was somehow better than a typical unaspirated unit. Your results of a 1.5 degree spike as compared to your NIST calibrated temp humidity sensor is pretty good. Do you have any more data regarding these tests? Also, what was the sun intensity when you did these tests, location (latitude), time of year, and what type of NIST temp/humidity sensors were used?
Thanks for any additional data on this comparison. It might shed some "light" on whether this product is worth checking out.
[/quote]
I am at 34.5 latitude.... in South West Oklahoma.... Sun...a plenty....
I'm sorry I didn't do a more scientific, and therefore more believable review for this --- I simply had a NIST temp/humidity sensor that I placed at the exact spot as the weather station. Now, one can argue what exact means... Because I didn't put up another mast for the comparison temp/humidity monitoring.... That said, I basically put this NIST sensor where the station was, and monitored its data for a couple of days. Of course, I have the logs from both systems that I could extract and post... that might take a bit since NEITHER system allows me direct access to the darn logs.
So, I do have the evidence to back up this unscientific comparison I did --- if I can get the information out of both systems.
I will have to put the sensor back out with the station and maybe do some screen shots of the two together....
I would be happy to do that so we call can see the numbers.
Really, I did the test to see how good or bad it was when compared to a known calibrated sensor. In this case NIST temp it +/- 1deg (and my model claims +/- 2deg) My thinking was, well, that sure is really close so under normal considerations I wasn't too worried it was reading as bad as some other makes and models I hear about.
So far though, this particular model, my only real complaint is the 4" display on the console. There is PC software that reads it directly via USB which gives much larger of course, but it's limited to just that... No trending unless I review the captured data using the PC program (SD chip I added to console is where it saves all the data NOT computer which would be better).
The SD chip is not visible except to their PC program unless I remove and plug directly into computer.
This display limitation for me is no big deal but if I wanted to view it from the other side of the room... that's just not going to happen. No larger consoles available, and from what I can tell, despite the fake coloring others are using, their screens for this function are better, but still not idea.
I digress from the topic however...
I'll see if I can extract the logs in some way of both systems for direct comparison... If not, then I'll see what I can do that would substantiate my claim more than "just cuz I said".... I think perhaps some random screen captures at various times noting sun intensity might go a long way.
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Yes, it's old, but still relevant. https://www.davisinstruments.com/product_documents/weather/app_notes/AN_24-temp-radiation-shield-comparison.pdf
It's a very well stated comparison..... A testing opportunity that few could pull off. As you noted, relevant, but as I noted before.... I don't think anyone on here, myself included is even remotely saying non-aspirated can compare to aspirated for accuracy.
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Yes, it's old, but still relevant. https://www.davisinstruments.com/product_documents/weather/app_notes/AN_24-temp-radiation-shield-comparison.pdf
I don't think anyone on here, myself included is even remotely saying non-aspirated can compare to aspirated for accuracy.
Fine. BeavorMeadow is asking about passive shields and whether this particular one is special. It is not.
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I have received the HP3500B
Paul
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I have received the HP3500B
Paul
What are your thoughts so far, Paul?
Sent from my SM-G935W8 using Tapatalk
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I have just opened the box without actually taking anything out. It will soon be setup for the video review (by someone else) within reasonable proximity of my VP2 Plus
Paul
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I have just opened the box without actually taking anything out. It will soon be setup for the video review (by someone else) within reasonable proximity of my VP2 Plus
Paul
Sent a PM as well. Planned on putting it near my Vue to compare.... assuming I am approved of course.
Looking forward to hearing what you think.
Chris
Sent from my SM-G935W8 using Tapatalk
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Hey Lucy,
With the anemometers being located under the station wouldn’t they be blocked from the wind?
Thanks
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Hey Lucy,
With the anemometers being located under the station wouldn’t they be blocked from the wind?
Thanks
Hi, zoom56
Please don't worry and we have tested the structure. It will not be blocked from the wind.
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Hi Lucy! Do you have any more of these left for testing? I would be more than happy to share my opinion on this station if possible, or any of your other products. Please reply to the PM I sent you for more info.
Thanks, Henry