Air Sensors
air-sensors

## Choosing Sensors Often the first step is to look for a sensor for what you're hoping to measure. In the community posts below, we're collecting info on different kinds of air quality sensors, and their: * cost * sensitivity/accuracy * links and documentation Can you afford a sensor? Can it detect what you're looking for? Where can you learn more about it? ### Posts about choosing and evaluating an air sensor [notes:grid:air-sensor-eval] ### Expected ranges and useful detection limits for pollutants of interest This [table](https://www.epa.gov/sites/production/files/2016-06/documents/air_sensors_webinar_slides_06-29-16.pdf) from an EPA [Air Quality Monitoring and Community Science webinar](https://www.epa.gov/sites/production/files/2016-06/documents/air_sensors_webinar_slides_06-29-16.pdf) lists the six criteria air pollutants and a couple additional pollutants, with background levels you might see in the environment in the “Range to Expect” column and useful detection limits for sensors. **** ## Wikis about air sensors [wikis:air-sensors] ## Air sensor projects Public Lab pages and posts tagged `air-sensor-projects` will appear here [nodes:air-sensor-projects] ## Questions [questions:air-sensors] ## Further reading and resources + Environmental consultant Tim Dye’s “[4 questions to ask before buying an air quality sensor](http://tdenviro.com/wp-content/uploads/2017/09/4-questions-when-buying-air-sensors.pdf)” neatly summarizes what to consider when choosing an air sensor. + [Snuffle.org](http://www.snuffle.org/): lots of information on low-cost sensors for various air pollutants. + [Air Quality Sensor Performance Evaluation Center (AQ-SPEC)](http://www.aqmd.gov/aq-spec/evaluations): from the South Coast Air Quality Management District, this program tests and evaluates air sensors “in the field, under ambient conditions, and in the laboratory under controlled environmental conditions.” + [Air Sensor Toolbox](https://www.epa.gov/air-sensor-toolbox): from the US Environmental Protection Agency, this toolbox includes guidance on how to use air sensors and their data, plus information on sensor performance and evaluation results. ...


Author Comment Last activity Moderation
warren "@wmacfarl also did you do your workshop with these yet? " | Read more » about 5 years ago
warren " Hi @sadieprego - would you like us to send you one of these? " | Read more » about 5 years ago
Ag8n " A good step forward. Congratulations! Maybe @falbriard could use these ideas for some of his work. " | Read more » over 5 years ago
nshapiro " @nshapiro has marked @haines241 as a co-author. " | Read more » over 5 years ago
nshapiro " @nshapiro has marked @gretchengehrke as a co-author. " | Read more » over 5 years ago
zengirl2 " Happy to see that the light conditions were a minor issue. I would love to get another sensor to re-test my bedroom to see what the reading is now. " | Read more » over 5 years ago
hamza151 " Nice information. If you really want to buy new mobile then visit the site. https://kokania.com/product-category/digital/accessories-digital/mobil..." | Read more » over 5 years ago
warren " Just linking in your excellent question here: https://publiclab.org/questions/wu_ming2/02-02-2019/how-do-i-calculate-error-for-averages " | Read more » over 5 years ago
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wu_ming2 "I posted a related question awaiting approval but may be more useful to follow up here. I am trying to estimate the error for PA2.5 values as prov..." | Read more » over 5 years ago
wu_ming2 "Wanted simply to upload a zip file with everything but for some reasons didn't work. Anyway here is it: https://repo.or.cz/purpleair-notify.git ..." | Read more » over 5 years ago
bohemian " Got it. Yeah, IFTT is one of those things - you either use it or you don't and it's not worth taking the leap unless you are doing a bunch of thi..." | Read more » over 5 years ago
wu_ming2 " @bohemian let me see what I can do. Didn’t use IFTTT because don’t wanted to install another iOS messaging app. So I used Discord instead. " | Read more » over 5 years ago
bohemian "wu_ming2 - I just installed my PurpleAir and like the idea of triggers, maybe even through IFTT. WOuld love to see what you've done. Care to share..." | Read more » over 5 years ago
wu_ming2 " I took a different route. Wanting to know when to switch on the air purifier based on readings, I developed a micro service pulling JSON data at..." | Read more » over 5 years ago
newjetnet " Now, decide how you want to manipulate and present your data. You can use excel to insert graphs or you can use a programming language such as Pyt..." | Read more » over 5 years ago
selema " instagram takipçi " | Read more » over 5 years ago
bps " This sensor can also be used with an Arduino which allows you to create a data logger but you probably knew that. I see that you have it talking t..." | Read more » over 5 years ago
david_uwi " It's going from 0-250 ug/m3 (and the x-axis is 42 days).The average value (over 6 weeks) is 17 ug/m3. So the graph shows there are some large spik..." | Read more » over 5 years ago
dswenson " What is your unit scale reading on the output (y axis)? I can't get a clear visual, but it appears to be something other than micrograms/cubic me..." | Read more » over 5 years ago
cfastie "Liz, it's great to know that you (or I guess your Mom) were well coiffed in the 80s, although I regret that you did not include photographic eviden..." | Read more » over 5 years ago
liz " Dear Chris, as a child of the eighties myself, i can corroborate that the effects of Aquanet hairspray on respiration are quite significant. Were ..." | Read more » over 5 years ago
B-winters " Love this. I am definitely going to try building this at some point, but don't have the time right now. Perhaps after January term. I am coming b..." | Read more » over 5 years ago
lincomatic "Some anecdotal evidence.. I've built my own PM2.5 monitor using the PMS5003, and have found it to be very resistant to influences of high humidity,..." | Read more » over 5 years ago