Fwd: [safecast admin] Particulate monitor testing

[Sean Bonner]

---------- 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.

You can pick up the sensor here:

http://www.seeedstudio.com/depot/grove-dust-sensor-p-1050.html?cPath=144_151

 

 

 

Akiba

FreakLabs Open Source Wireless

Web: http://www.freaklabs.org

Shop:http://www.freaklabsstore.com

Twitter: http://www.twitter.com/freaklabs

 

 

--
Sean Bonner

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[Sean Bonner]

---------- 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

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.

[Sean Bonner]

---------- 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.

Akiba
FreakLabs Open Source Wireless
Web: http://www.freaklabs.org
Shop:http://www.freaklabsstore.com
Twitter: http://www.twitter.com/freaklabs

> -----Original Message-----
> From: safecas...@googlegroups.com
> [mailto:safecas...@googlegroups.com] On Behalf Of Kalin
> KOZHUHAROV (SafeCast)
> Sent: Wednesday, May 16, 2012 3:47 PM
> To: safecas...@googlegroups.com
> Subject: Re: [safecast admin] Particulate monitor testing
>

> 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.
>