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---------- Forwarded message ---------- From: Akiba<ch...@freaklabs.org> Date: Tue, May 15, 2012 at 11:28 PM
Subject: [safecast admin] Particulate monitor testing To: safecas...@googlegroups.com
Hi
guys.
I was playing around
with the Shinyei PM1 (1 micron+ particulate sensor) that I got. I put together a
simple Arduino sketch to read the sensor and calculate the particulate density.
I also wrote a short Processing sketch to read the data and log it to a file.
Here are some initial results of me testing the air quality in my room as I was
soldering. I've also included some pics of the test setup and the source code
for the Arduino and Processing sketches.
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---------- Forwarded message ---------- From: Kalin KOZHUHAROV (SafeCast)<ka...@safecast.org>
Date: Tue, May 15, 2012 at 11:46 PM Subject: Re: [safecast admin] Particulate monitor testing To: safecas...@googlegroups.com
Great!
Everything except the "Particles/0.01 cu ft." dimension on the
graph... Google says 0.01 (cu feet) = 283.168466 milliliters
So multiplying that by 3.5 we'll get roughly particles/liter, by 3500
for particles/m^3
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---------- Forwarded message ---------- From: Akiba<ch...@freaklabs.org> Date: Tue, May 15, 2012 at 11:50 PM
Subject: RE: [safecast admin] Particulate monitor testing To: safecas...@googlegroups.com
Ha ha ha. I wasn't too happy about the cubic foot dimension either but it
came with the calibration chart:
I have one more sensor that I can loan out. Otherwise, we should probably
order more from Seeed. I'm testing outdoors right now but keep on getting
concentration of 0.00. That means that either the particles are too small or
measuring outdoor air is more difficult than indoor. Gonna need to study a
bit more on this air monitoring stuff. So far, looks like indoor
measurements are okay tho.
> Great!
>
> Everything except the "Particles/0.01 cu ft." dimension on
> the graph... Google says 0.01 (cu feet) = 283.168466
> milliliters So multiplying that by 3.5 we'll get roughly
> particles/liter, by 3500 for particles/m^3
>
> http://en.wikipedia.org/wiki/Cleanroom#ISO_14644-1_cleanroom_standards
> says you are normal "room air" ISO9 when not soldering :-)
>
> What's the current draw for such a sensor?
>
> I might be able to test the sensor our Class 10 (=ISO4) clean
> room next time I go to Kumamoto:
> http://www.kumanan-pcnet.co.jp/hdd/cleanroom/index.html
>
> Cheers,
> Kalin.
>