Author Topic: PM2.5 Air Quality Monitor  (Read 2456 times)

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Offline Lucy

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PM2.5 Air Quality Monitor
« on: July 18, 2018, 03:17:44 AM »
Hi, for anyone who cares about the air quality:

We have released a PM2.5 air quality monitor.
The features are summarized by one of our customers(amazon review):
"Quick Summary:
1. Nice battery operated display (no wires) with PM2.5 / ugm3, Max, 24-hour Max and 1hr Max PM2.5, 24-hour AQI color bar, temp and humidity, sensor battery level and sensor reception icon.
2. Quality/Accurate water-resistant Honeywell HPM partical sensor with rechargeable batteries and a solar panel (no wires). Sensor also has USB charge port, batteries last about 3 weeks without any charge, indefinitely with solar.
3. Useful Instruction Manual.
4. Responsive customer service."

If you're interested, you can visit this link to know more about it: http://www.ecowitt.com/Other_Sensors/11.html

Ecowitt Weather Instruments at: http://www.ecowitt.com/
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Twitter: https://twitter.com/ecowittweather
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Offline SLOweather

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Re: PM2.5 Air Quality Monitor
« Reply #1 on: July 18, 2018, 08:36:41 AM »
The link doesn't work for me this morning.

Offline Lucy

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Re: PM2.5 Air Quality Monitor
« Reply #2 on: July 18, 2018, 09:24:37 PM »
Hi, SLOweather

Sorry to hear that. I just tried and it works for me.
You can also visit the amazon link here: https://www.amazon.com/dp/B079FR4HMB
Ecowitt Weather Instruments at: http://www.ecowitt.com/
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Offline PaulMy

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Re: PM2.5 Air Quality Monitor
« Reply #3 on: July 18, 2018, 10:51:45 PM »
The first link also did not work for me, but the new one does.
Enjoy,Paul
Davis Vantage Pro 2 Plus 24-FARS Wireless
Envoy/USB DataLogger/Cumulus v.1.9.4   -   Vue Console/WiFiLogger
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www.komokaweather.ca   www.komokaweather.com   www.komokaweather.com/weather28/   www.komokaweather.com/pws/index.php
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Offline Lucy

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Re: PM2.5 Air Quality Monitor
« Reply #4 on: July 19, 2018, 02:06:37 AM »
Hi, Paul It's really strange. May I know is there any error message when you open the first link?

Best regards, Lucy
Ecowitt Weather Instruments at: http://www.ecowitt.com/
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Online mcrossley

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Re: PM2.5 Air Quality Monitor
« Reply #5 on: July 19, 2018, 02:57:10 AM »
DNS error for me, can't find that host name, or the domain.
Mark

Offline Lucy

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Re: PM2.5 Air Quality Monitor
« Reply #6 on: July 19, 2018, 03:32:37 AM »
Thank you, Mark.
I'll ask the tech support to fix this issue as soon as possible.

Best Regard, Lucy
Ecowitt Weather Instruments at: http://www.ecowitt.com/
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Offline PaulMy

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Re: PM2.5 Air Quality Monitor
« Reply #7 on: July 19, 2018, 09:10:24 AM »
It takes some time to load but now does come up with the
Quote
WH0290

Wireless PM 2.5 Air Quality Monitor Air Detector Air Analysis Apparatus for

Indoor Outdoor
 
page.

Enjoy,
Paul
Davis Vantage Pro 2 Plus 24-FARS Wireless
Envoy/USB DataLogger/Cumulus v.1.9.4   -   Vue Console/WiFiLogger
Komoka, ON  Canada
www.komokaweather.ca   www.komokaweather.com   www.komokaweather.com/weather28/   www.komokaweather.com/pws/index.php
Blitzortung Station #1076 www.lightningmaps.org/blitzortung7/america/index.php?bo_page=statistics&bo_show=network&lang=en&bo_station_id=969

Offline Lucy

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Re: PM2.5 Air Quality Monitor
« Reply #8 on: July 19, 2018, 09:32:54 PM »
Hi, Paul

Thanks for your help. So the link is ok, but the loading time is long. We'll try to fix this issue.

Best regards, Lucy
Ecowitt Weather Instruments at: http://www.ecowitt.com/
FB: @ecowittsupport
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Online mcrossley

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Re: PM2.5 Air Quality Monitor
« Reply #9 on: July 20, 2018, 03:13:13 AM »
Still a DNS failure for me.
Mark

Offline Lucy

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Re: PM2.5 Air Quality Monitor
« Reply #10 on: July 20, 2018, 04:10:51 AM »
Hi, mark

Sorry to hear that. How about this link: http://www.ecowitt.com/
Or you can try to search "ecowitt" on google and see whether you can find our website and open it. Maybe there's something wrong with the link I sent to you.

Lucy
Ecowitt Weather Instruments at: http://www.ecowitt.com/
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Online mcrossley

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Re: PM2.5 Air Quality Monitor
« Reply #11 on: July 20, 2018, 04:22:50 AM »
No good.

I'm using 1.1.1.1 Clouldflare private DNS
 [ You are not allowed to view attachments ]
Mark

Offline Lucy

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Re: PM2.5 Air Quality Monitor
« Reply #12 on: July 21, 2018, 01:50:30 AM »
Hi, Mark

We're working on it now.

Lucy
Ecowitt Weather Instruments at: http://www.ecowitt.com/
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Online johnd

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Re: PM2.5 Air Quality Monitor
« Reply #13 on: July 21, 2018, 03:52:45 AM »
Mark, I can reach it reasonably OK from here (via Google DNS). But it's definitely a slow site both to return from DNS look-up and then to load. Has the feel of a site hosted somewhere in the Far East but whether that's true or not I don't know and it could just be a slow server located almost anywhere.
« Last Edit: July 21, 2018, 03:55:05 AM by johnd »
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Offline SLOweather

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Re: PM2.5 Air Quality Monitor
« Reply #14 on: July 28, 2018, 11:21:58 AM »
Web site issues aside (http://www.ecowitt.com/Other_Sensors/11.html still times out for be after 7 seconds or so), my PM 2.5 monitor arrived from Amazon yesterday.

So far, it seems to work OK. While it comes with a USB cord, apparently that's only for initial and top-off charges for the outdoor sensor, which has a solar cell on it and 2 AA NiMH cells inside.

Curiously, the unit comes with the 2 NiMH cells, but you need to supply your own for the receiver.

The receiver shows current, 1 hour and 24 hours max PM2.5, max since reset, and indoor temp and humidity.

Unfortunately, there is no logging or graphing, or way to connect to a computer. That would be a great addition. 

Online mcrossley

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Re: PM2.5 Air Quality Monitor
« Reply #15 on: July 28, 2018, 11:32:24 AM »
Unfortunately, there is no logging or graphing, or way to connect to a computer. That would be a great addition.
Essential for me. I wonder if the radio protocol is decipherable?
Mark

Offline Lucy

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Re: PM2.5 Air Quality Monitor
« Reply #16 on: July 29, 2018, 11:21:09 PM »
Web site issues aside (http://www.ecowitt.com/Other_Sensors/11.html still times out for be after 7 seconds or so), my PM 2.5 monitor arrived from Amazon yesterday.

Unfortunately, there is no logging or graphing, or way to connect to a computer. That would be a great addition.

Hi, thanks for your purchase.
As for the website issue, we're still working on it. Some people said that they can visit it normally in the same country, so it's really hard to define the reason. We have talked with the web developer and domain server, however they don't have a good solution currently.
As for the data logging issue, this kind of function is been developing now and in the future you may view the PM2.5 data on the website(with graph and history records) or a phone application with the new version product.

Best Regards,
Lucy
Ecowitt Weather Instruments at: http://www.ecowitt.com/
FB: @ecowittsupport
Twitter: https://twitter.com/ecowittweather
Email: support@ecowitt.com

Offline Lucy

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Re: PM2.5 Air Quality Monitor
« Reply #17 on: July 29, 2018, 11:25:51 PM »
You can also match a PM2.5 sensor with the WH6006E/HP3500B weather station, then you can view the PM2.5 history records on the SD card file.
That might not be a good solution if you only want the PM2.5 data.
Ecowitt Weather Instruments at: http://www.ecowitt.com/
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Twitter: https://twitter.com/ecowittweather
Email: support@ecowitt.com

Offline SLOweather

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Re: PM2.5 Air Quality Monitor
« Reply #18 on: July 30, 2018, 08:36:32 AM »
Well, after using this for a few days, here's some more feedback.

In the manual, the Air Quality Levels table in the Appendix shows:

AQI          Air Pollution Level
0-50        Good
51-100     Moderate
101-150   Mild
151-200   Unhealthy
210-300   Severe
300+       Hazardous

And these levels are reflected on the bar graph on the screen.



It seems to me that the Moderate and Mild designations should be switched. That is, Mild is "less" than Moderate.

Also, even though all of the values shown on my screen last night (Current, 1 Hr Max, 24 Hr Max, and Max since last reset) were below 50, the bar graph still showed "Moderate" when I think it should have been "Good".

Offline Lucy

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Re: PM2.5 Air Quality Monitor
« Reply #19 on: July 30, 2018, 09:36:17 PM »
Hello, SLOweather

Thanks for your feedback.
For the AQI problem, please open the attached image  [ You are not allowed to view attachments ]  and refer to the third column. This PM2.5 sensor detects the real time PM2.5 content(as the third column shows) while the AQI index(as the first column shows) is calculated with 24-hour average result.
The measurement is based on U.S. standard. Here's link for your reference: https://www.epa.gov/sites/production/files/2014-05/documents/zell-aqi.pdf

We didn't put this full chart on the manual due to size limit. We have add the full chart on our website.
We added instruction on the amazon listing "The AQI monitor color bar refers to a 24-hour average value, not real-time".
Sorry for the inconvenience caused.
Please let me know your thought.

Best Regards,
Lucy
Ecowitt Weather Instruments at: http://www.ecowitt.com/
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Offline Intheswamp

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Re: PM2.5 Air Quality Monitor
« Reply #20 on: July 31, 2018, 09:10:55 AM »
Well, after using this for a few days, here's some more feedback.

In the manual, the Air Quality Levels table in the Appendix shows:

AQI          Air Pollution Level
0-50        Good
51-100     Moderate
101-150   Mild
151-200   Unhealthy
210-300   Severe
300+       Hazardous

And these levels are reflected on the bar graph on the screen.



It seems to me that the Moderate and Mild designations should be switched. That is, Mild is "less" than Moderate.

Also, even though all of the values shown on my screen last night (Current, 1 Hr Max, 24 Hr Max, and Max since last reset) were below 50, the bar graph still showed "Moderate" when I think it should have been "Good".
I agree with SLOweather, the wording order is definitely wrong...in rating or measuring something "mild" comes before "moderate".  By simply entering the words "mild" and "moderate into a Google search it is easily seen that this is mild>moderate is the proper order.  Here is a link to the first hit that came up in a Google search using those two words... Wordreference.com - moderate vs. mild.

Interesting looking gadget, but without computer connectivity it is not very useful for the weather people here.  My air quality is good where my home is located so it would be cool for the occasional smoke where harvested forest land is being burned off, or for the very, very rare times of ???....BUT I'm not going to look at it everyday to figure out what the air quality is.  If the data was presented on the website then I would glance at it everyday and could provide that data for other people to look at.

I also have a shop that is dead center of our small town.  No major factories nearby but the downtown area has a tremendous amount of traffic coming through it, especially during the summertime.  The highway that comes through being what is referred to as "The Beach Trail"...US Highway 331.  Traffic bottlenecks here and it would be interesting to see the pollution readings during times of high and low traffic....that situation might actually be useful.  But, again, it would be much better if that could be connected to a computer.  I'll go look at the $$ and see what I think about putting one downtown.   Who knows...  ;)

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Offline Lucy

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Re: PM2.5 Air Quality Monitor
« Reply #21 on: July 31, 2018, 11:14:39 PM »
I'm sorry that I missed the "mild" & "moderate" part of the feedback from SLOweather.
And thanks for your correction.  :oops:
We have discussed over this issue and found out that the "mild" should be replaced with a more proper word. Since it stands for "Unhealthy for Sensitive Groups", we have two words alternative: USG or Poor.
Which do you think is better? Or do you have a better suggestion?

As for the computer connectivity, the function is being developing now. :)

Best Regards,
Lucy
Ecowitt Weather Instruments at: http://www.ecowitt.com/
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Offline Intheswamp

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Re: PM2.5 Air Quality Monitor
« Reply #22 on: August 01, 2018, 07:57:13 AM »
Er, if you're going to be changing things why not just swap positions of the words "mild" and "moderate"???

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Offline Lucy

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Re: PM2.5 Air Quality Monitor
« Reply #23 on: August 01, 2018, 11:12:03 PM »
Please check this chart first: [ You are not allowed to view attachments ]  According to the standard air quality levels, the second level is "moderate" and the third level is "Unhealthy for Sensitive Groups". We intended to use the word "mild" to replace the "Unhealthy for Sensitive Groups", since it's too long to display on the console. 
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Offline SLOweather

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Re: PM2.5 Air Quality Monitor
« Reply #24 on: August 03, 2018, 08:41:25 AM »
That looks like the table I found on the US EPA site.

I'll think about an alternate word for mild that would fit on the screen. Maybe "poor"?
I still say there is a problem with the levels that turn the bar graph indicators on and off. I did a MAX reset on mine last evening PDT. This morning it shows:

PM2.5        33
MAX          42
1 H MAX    40
24 H MAX  42

and yet the bar graph says Moderate when I believe it should say Good. None of the readings were above the Good/Moderate threshold at 50.

 

anything