Green / Eco-Friendly

Recommend Air Quality Meter

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  • Dec 4th, 2017 10:31 pm
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Recommend Air Quality Meter

Interested in the general particulate readings and enable manual logging given time of day, traffic, and wind direction. Also, the effectiveness of the central air vs dedicated HEPA filtration.

Are there ones that's accurate enough to tell the differences?
Last edited by LongLiveRFD on Aug 16th, 2016 5:18 pm, edited 1 time in total.
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I can't think of a do it all Air Quality Meter that hit all your points. Acurite, Netatmo and Elgato all have modules that hit some of your points but they are weather stations first.

For outdoors,
Most are able to log time of the day, wind direction but unable to log ppm or traffic(vehicle congestion??). They can tell you the AQHI for your area.

For indoors,
Most are able to log time of the day, ppm (VOC), ppm (C02 build-up), ppm (CO) but are unable to log traffic(human occupancy) or the effectiveness of the central air vs dedicated HEPA filtration. You should be able to manually monitor run time of central air or dedicated HEPA filtration and cross reference date/time with the ppm reading.
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bubuski wrote:
Aug 16th, 2016 3:28 pm
I can't think of a do it all Air Quality Meter that hit all your points. Acurite, Netatmo and Elgato all have modules that hit some of your points but they are weather stations first.

For outdoors,
Most are able to log time of the day, wind direction but unable to log ppm or traffic(vehicle congestion??). They can tell you the AQHI for your area.

For indoors,
Most are able to log time of the day, ppm (VOC), ppm (C02 build-up), ppm (CO) but are unable to log traffic(human occupancy) or the effectiveness of the central air vs dedicated HEPA filtration. You should be able to manually monitor run time of central air or dedicated HEPA filtration and cross reference date/time with the ppm reading.
Thanks.

To clarify, I meant log manually, and only needs to be accurate enough, i.e. can detect a obvious change in environmental factors.

The devices I have seen on youtube are in thousands CAD http://www.iqair.com/ca/commercial-lase ... e-counters.

I was wondering if there's good enough devices for the above purposes.
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I remember reading about Dylos air quality monitors on some woodworking forum.

There's a guy who does all kinds of neat stuff (sometimes excessively so) with wood who got one of these Dylos monitors and wrote about its uses in his shop
http://woodgears.ca/dust/dylos.html
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I've got an SKT air cube C arriving this week, what appears to be a home made air quality unit from Aliexpress coming in about a month and I pleged for a Uhoo. We'll see which is the most accurate. DIY would seem to be the course of action if you need to record specific variables. The AirCasting module is open source and customizeable.

CO2 sensors seem to be unusually expensive...
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Thread revival... what are AQM are people buying for their homes these days? Preferably wifi/app monitored. Thx
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SKT air cube C: discontinued use due to highly inaccurate Sharp GP2Y sensor
Uhoo: WAAAY too expensive. US$299 + C$60 in duties. Sharpy GP2Y algorithm is different from the air cube but still vastly inaccurate. No corrections for any measurement, so barometric pressure is the same as a Cat 4 hurricane all the time. Nice graphs, wifi connectivity, etc.
Some home made thing from Taobao. Surprising, uses the most accurate sensors available (sht20 temperature and humidity sensor, Plantower PMS5003 dust sensor). No known connectivity, but is very accurate. It's plugged in all the time at work. It had a reading of 153 during the BC wild fires and normally reads 0 or 1 at work.
↑, ↑, ↓, ↓, ←, →, ←, →, B, A, START

There are no apostrophes in plurals! "I have 1000 posts" = correct. "I have 1000 post's" = incorrect!
Could've, would've, should've. It's simple English, people!
Voila: French, meaning "There it is!" or "Look!" Viola: A medium-sized stringed instrument Wala: An island of Vanuatu.
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rf134a wrote:
Oct 3rd, 2017 12:21 am
SKT air cube C: discontinued use due to highly inaccurate Sharp GP2Y sensor
Uhoo: WAAAY too expensive. US$299 + C$60 in duties. Sharpy GP2Y algorithm is different from the air cube but still vastly inaccurate. No corrections for any measurement, so barometric pressure is the same as a Cat 4 hurricane all the time. Nice graphs, wifi connectivity, etc.
Some home made thing from Taobao. Surprising, uses the most accurate sensors available (sht20 temperature and humidity sensor, Plantower PMS5003 dust sensor). No known connectivity, but is very accurate. It's plugged in all the time at work. It had a reading of 153 during the BC wild fires and normally reads 0 or 1 at work.
Any links to how the PMS5003 item was DIY'd? I was considering buying a PMS7003 but would want a quick DIY for it
https://www.aliexpress.com/store/produc ... 09733.html

Then there's this Blueair Aware Wi Fi Air Quality Monitor for $205 that looks promising and the price is good compared to amazon.com
https://www.costco.ca/.product.1092739.html
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engineered wrote:
Oct 3rd, 2017 12:53 am
Any links to how the PMS5003 item was DIY'd? I was considering buying a PMS7003 but would want a quick DIY for it
https://www.aliexpress.com/store/produc ... 09733.html

Then there's this Blueair Aware Wi Fi Air Quality Monitor for $205 that looks promising and the price is good compared to amazon.com
https://www.costco.ca/.product.1092739.html
The "diy" meter can be purchased at wclh.taobao.com. There's a newer version with a CO2 detector or tvoc detector. Just be warned that the site will crash Firefox and has some weird audio coming from it. On the back of the unit, there's a uart port, so if you know anything about the AVR processor or have access to a scope, you can probably hook something up to it.

I was going to buy the Blueair but there's no objective measure of the device. It doesn't tell you which sensors it uses. It claims to measure dust, dander, pollen, mould, bacteria, and viruses, which is basically impossible. The most advance dust sensor is a Mitsubishi dust sensor that just came out this year, so it can't be used in this 2 year old device. The Blueair just throws up too many red flags to be reliable.
↑, ↑, ↓, ↓, ←, →, ←, →, B, A, START

There are no apostrophes in plurals! "I have 1000 posts" = correct. "I have 1000 post's" = incorrect!
Could've, would've, should've. It's simple English, people!
Voila: French, meaning "There it is!" or "Look!" Viola: A medium-sized stringed instrument Wala: An island of Vanuatu.
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rf134a wrote:
Oct 3rd, 2017 2:28 am
The "diy" meter can be purchased at wclh.taobao.com. There's a newer version with a CO2 detector or tvoc detector. Just be warned that the site will crash Firefox and has some weird audio coming from it. On the back of the unit, there's a uart port, so if you know anything about the AVR processor or have access to a scope, you can probably hook something up to it.

I was going to buy the Blueair but there's no objective measure of the device. It doesn't tell you which sensors it uses. It claims to measure dust, dander, pollen, mould, bacteria, and viruses, which is basically impossible. The most advance dust sensor is a Mitsubishi dust sensor that just came out this year, so it can't be used in this 2 year old device. The Blueair just throws up too many red flags to be reliable.
Thanks for the info. I'd much prefer an internet connected and ready to go device, but if none of them are reliable I would have to give and build an arduino/Pi device.

Any comments on these options?
Foobot $200 USD
https://www.amazon.com/Foobot-Indoor-Qu ... B06Y8VLCH8

Awair $200 USD
https://www.amazon.com/Awair-Whats-Brea ... B011EFY014

Laser Egg 2 actually looks pretty promising $180 USD
https://www.amazon.com/Air-Quality-Moni ... B073VN27PW
Laser Egg 2+ will enter a market full of Chinese and imported devices which also measure TVOC and PM2.5 air quality. However, the product stands out with its sleek design and focus on accuracy. The Laser Egg series uses laser-based light scattering technology that detects particles as little as 0.3µm. The sensors are sourced from Austria Mikro Systeme (AMS), a major gas and infrared sensor manufacturer, and have an accuracy of +/- 10%.
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The big question is: What do you want it to do? Right now, these devices can be separated into measurement devices and lifestyle devices. The WCLH device is a measurement device. Everything else is a lifestyle device. They concentrate more on dumbing down everything into a colour or number. If a device doesn't tell you which sensor it uses, it's a lifestyle device that distills what the maker thinks is important down to 3 basic colours or whatever basic metric they decide to use.

The other issue is that there's no way for your average consumer to measure or compare most measurements. Only PM2.5, temperature, humidity and barometric pressure are easily comparable, everything else is fluff since it's highly unlikely your average Joe will have any other kind of device to compare measurements against.

Foobot has very bad reviews on amazon and the creators have a really bad attitude against their own customers. I don't know enough about the Awair to make a comment other than they don't tell you what sensor they use.

The laseregg 2+ seems to have been upgraded by changing the $6 Sharp GP2Y to a $30 Plantower sensor. The specs of 0-999ug, 0.3um, and counts of up to 65536 are a giveaway. The sensor source is using fancy foreign names to market to name-sensitive Chinese customers. The actual sensor is only good for measuring CO2 from 400-2000ppm. The sensor then interpolates the tvoc with a minimum sensitivity of 125ppb, which is quite high. Here's the datasheet if you care:
https://www.digikey.ca/product-detail/e ... ND/5117222

Here's the current readings from my uHoo. Many sensors is not a good thing, it should only measure what you need. Since most of the devices are meant for use in Asia, they may measure things we have no use for. For example, any non-zero value for CO is considered to be unacceptable in Canada.
Screenshot_20171003-224804.png
=================================================
The price on the WCLH unit continues to impress me. It's probably my next unit despite having no connectivity. For (my) reference:
SenseAir S8 CO2 sensor: https://www.co2meter.com/products/s8-mi ... 2-sensor-1
Telair T6317 CO2 sensor: https://www.digikey.ca/product-detail/e ... ND/5027891
HCHO sensor: Dart 2FE5: https://www.dart-sensors.com/product/ec ... de-sensor/
↑, ↑, ↓, ↓, ←, →, ←, →, B, A, START

There are no apostrophes in plurals! "I have 1000 posts" = correct. "I have 1000 post's" = incorrect!
Could've, would've, should've. It's simple English, people!
Voila: French, meaning "There it is!" or "Look!" Viola: A medium-sized stringed instrument Wala: An island of Vanuatu.
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rf134a wrote:
Oct 4th, 2017 1:12 am
The big question is: What do you want it to do? Right now, these devices can be separated into measurement devices and lifestyle devices. The WCLH device is a measurement device. Everything else is a lifestyle device. They concentrate more on dumbing down everything into a colour or number. If a device doesn't tell you which sensor it uses, it's a lifestyle device that distills what the maker thinks is important down to 3 basic colours or whatever basic metric they decide to use.

The other issue is that there's no way for your average consumer to measure or compare most measurements. Only PM2.5, temperature, humidity and barometric pressure are easily comparable, everything else is fluff since it's highly unlikely your average Joe will have any other kind of device to compare measurements against.

Foobot has very bad reviews on amazon and the creators have a really bad attitude against their own customers. I don't know enough about the Awair to make a comment other than they don't tell you what sensor they use.

The laseregg 2+ seems to have been upgraded by changing the $6 Sharp GP2Y to a $30 Plantower sensor. The specs of 0-999ug, 0.3um, and counts of up to 65536 are a giveaway. The sensor source is using fancy foreign names to market to name-sensitive Chinese customers. The actual sensor is only good for measuring CO2 from 400-2000ppm. The sensor then interpolates the tvoc with a minimum sensitivity of 125ppb, which is quite high. Here's the datasheet if you care:
https://www.digikey.ca/product-detail/e ... ND/5117222

Here's the current readings from my uHoo. Many sensors is not a good thing, it should only measure what you need. Since most of the devices are meant for use in Asia, they may measure things we have no use for. For example, any non-zero value for CO is considered to be unacceptable in Canada.

Screenshot_20171003-224804.png

=================================================
The price on the WCLH unit continues to impress me. It's probably my next unit despite having no connectivity. For (my) reference:
SenseAir S8 CO2 sensor: https://www.co2meter.com/products/s8-mi ... 2-sensor-1
Telair T6317 CO2 sensor: https://www.digikey.ca/product-detail/e ... ND/5027891
HCHO sensor: Dart 2FE5: https://www.dart-sensors.com/product/ec ... de-sensor/
I'd like to monitor PM2.5, but ideally also CO2, VOC, etc. at home and at work. I don't need a lifestyle device, I prefer technical info, even if it has no connectivity. At least I can look at it when I want to, but would prefer the ability to have it logged.

Do you have link to the WCLH device?
Is it this one? https://world.taobao.com/item/529311240 ... 56daRzxxYd
If so that's pretty good for about $58 USD.
Thanks!
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rf134a wrote:
Oct 4th, 2017 1:12 am
The big question is: What do you want it to do? Right now, these devices can be separated into measurement devices and lifestyle devices. The WCLH device is a measurement device. Everything else is a lifestyle device. They concentrate more on dumbing down everything into a colour or number. If a device doesn't tell you which sensor it uses, it's a lifestyle device that distills what the maker thinks is important down to 3 basic colours or whatever basic metric they decide to use.

The other issue is that there's no way for your average consumer to measure or compare most measurements. Only PM2.5, temperature, humidity and barometric pressure are easily comparable, everything else is fluff since it's highly unlikely your average Joe will have any other kind of device to compare measurements against.

Foobot has very bad reviews on amazon and the creators have a really bad attitude against their own customers. I don't know enough about the Awair to make a comment other than they don't tell you what sensor they use.

The laseregg 2+ seems to have been upgraded by changing the $6 Sharp GP2Y to a $30 Plantower sensor. The specs of 0-999ug, 0.3um, and counts of up to 65536 are a giveaway. The sensor source is using fancy foreign names to market to name-sensitive Chinese customers. The actual sensor is only good for measuring CO2 from 400-2000ppm. The sensor then interpolates the tvoc with a minimum sensitivity of 125ppb, which is quite high. Here's the datasheet if you care:
https://www.digikey.ca/product-detail/e ... ND/5117222

Here's the current readings from my uHoo. Many sensors is not a good thing, it should only measure what you need. Since most of the devices are meant for use in Asia, they may measure things we have no use for. For example, any non-zero value for CO is considered to be unacceptable in Canada.

Screenshot_20171003-224804.png

=================================================
The price on the WCLH unit continues to impress me. It's probably my next unit despite having no connectivity. For (my) reference:
SenseAir S8 CO2 sensor: https://www.co2meter.com/products/s8-mi ... 2-sensor-1
Telair T6317 CO2 sensor: https://www.digikey.ca/product-detail/e ... ND/5027891
HCHO sensor: Dart 2FE5: https://www.dart-sensors.com/product/ec ... de-sensor/
Do you have link to the WCLH device?
Is it this one? https://item.taobao.com/item.htm?id=529 ... oSite=main
If so that's pretty good for about $156 CAD.
Is there a way to change the language on the device to english?
Thanks!
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engineered wrote:
Oct 25th, 2017 10:13 pm
Do you have link to the WCLH device?
Is it this one? https://item.taobao.com/item.htm?id=529 ... oSite=main
If so that's pretty good for about $156 CAD.
Is there a way to change the language on the device to english?
Thanks!
That's the one I'm going to buy. The last version has the CO2 sensor and some sort of TVOC sensor and seems to allow downloading of data via USB. Unfortunately, I don't have any way of ordering it. It's not on Aliexpress or similar. The default language for overseas orders is English.
↑, ↑, ↓, ↓, ←, →, ←, →, B, A, START

There are no apostrophes in plurals! "I have 1000 posts" = correct. "I have 1000 post's" = incorrect!
Could've, would've, should've. It's simple English, people!
Voila: French, meaning "There it is!" or "Look!" Viola: A medium-sized stringed instrument Wala: An island of Vanuatu.
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rf134a wrote:
Nov 2nd, 2017 1:46 am
That's the one I'm going to buy. The last version has the CO2 sensor and some sort of TVOC sensor and seems to allow downloading of data via USB. Unfortunately, I don't have any way of ordering it. It's not on Aliexpress or similar. The default language for overseas orders is English.
Searched "wclh pm2.5" ebay, and only look at those with the WCLH on the bottom right and the same chinese characters on upper left:
https://www.ebay.com/itm/2017-English-v ... Swy3NZYKdK
https://www.ebay.com/itm/Laser-PM1-0-PM ... SwIhxZYL3e
https://www.ebay.com/itm/Laser-PM1-0-PM ... Swvg9XdNPm
https://www.ebay.com/itm/New-PM2-5-dete ... SwpINZYKcy
https://www.ebay.com/itm/PM1-0-PM2-5-PM ... SwiDFYOpBa


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