PM2.5 Air Quality Sensor
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PM2.5 Air Quality Sensor

by CamilleT on Fri Apr 24, 2020 6:41 am

Hi all,
within my internship i have to analyse particular matter measurement data. They use the PM2.5 Air Quality Sensor for the measurment. But to analyse the measurement error of the data i need more informations about the measurement principle and how the microprocessor calculates the measurement result. Does a mathematic formula exist?
Moreover i need to know the temperature sensitivity of the sensor. Is the temperature already calculated in the result?
Do other cross-sensitivities exist?
Is there any information about the volumetric flow rate [m3/s] provided? I couldn't find any time-dependent statement.
Thank you so much for your help!

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Joined: Fri Apr 24, 2020 5:37 am

Re: PM2.5 Air Quality Sensor

by adafruit_support_bill on Fri Apr 24, 2020 7:17 am

A brief description of the operating principle of the sensor and temperature/consistency curves can be found in the datasheet. There is a link to it in the guide:
https://learn.adafruit.com/pm25-air-qua ... /downloads

There is a lot of information on Mie Scattering available on the web.

For more details on the specific implementation used by this sensor, you can try contacting the manufacturer:

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Joined: Sat Feb 07, 2009 10:11 am

Please be positive and constructive with your questions and comments.