<div dir="ltr">Hi Paul,<div><br></div><div>We have three PM sensors here at the lab (under $100) from China and are interested in quantifying their performance. The Test Kitchen is set up and we can try some experiments at Stove Camp for those interested.</div><div><br></div><div>Best,</div><div><br></div><div>Dean</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Jun 11, 2015 at 6:47 AM, Paul Anderson <span dir="ltr"><<a href="mailto:psanders@ilstu.edu" target="_blank">psanders@ilstu.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
Stovers,<br>
<br>
WONDERFUL!!! Now this Listserv is really working together!! So
summary of comments and thoughts thus far:<br>
<br>
1. MOST of us were almost unaware of the existence of Speck, and we
find out (thanks Christina) that there are many such types of units.<br>
<br>
2. But being inexpensive, they have issues of quality of the
data. Evidently not of sufficient quality for the HEALTH STUDIES
requirements of Kirk Smith and his crew.<br>
<br>
3. But for those of us in the "trenches" trying to understand how
to improve the stoves, these small detectors of PM could be of great
assistance. If only to be able to detect whether the emissions are
improving or worsening would be useful for a stove designer to make
comparisons between one stove with two different variations.<br>
<br>
4. These smaller PM measurement devices have not yet entered into
the activities of Aprovecho (as developer of high precision
instruments) and therefore have not been part of Aprovecho
activities for Stove Camps where the inexpensive instruments might
be of great interest. <br>
<br>
5. Will these PM sensors be part of Stove Camps? Or when? I do
not have any such sensors, and I am not intending to attend the
Aprovecho Stove Camp in July (27 to 31, I believe). Dean and crew
or some attendee might arrange to have the PM sensors by then.<br>
<br>
But there is another Stove Camp early next month (9 - 10 July) in
Ontario, Canada, headed by Crispin PP and Julien Winter and hosting
assistance by Alex English. The focus will be on the RELATIVELY
LOW COST emissions testing equipment (and procedures) that Crispin
knows so well. If you are not familiar with such equipment or want
further information and hands-on experience, consider attending.
Information about this Stove Camp about Testing is available from
Julien, who I ask to re-post to the Stoves Listserv the contact
information and details / agenda (with a new Subject line).
So, perhaps further discussion about the inexpensive PM measurement
devices will be included at that event.<br>
<br>
Paul<br>
<pre cols="72">Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: <a href="mailto:psanders@ilstu.edu" target="_blank">psanders@ilstu.edu</a>
Skype: paultlud Phone: <a href="tel:%2B1-309-452-7072" value="+13094527072" target="_blank">+1-309-452-7072</a>
Website: <a href="http://www.drtlud.com" target="_blank">www.drtlud.com</a></pre>
<div>On 6/10/2015 6:09 PM, Christina
Espinosa wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">I asked Kirk Smith if he had used this one before
and here is his response regarding these type of PM devices for
the home from tests they have run:<br>
<br>
<span style="color:rgb(0,0,255)">"There a number of PM devices
on the market now designed for general
consumers -- at least a dozen in China alone. plus some here.
We
have evaluated several and are doing another batch here soon
at our lab
in Richmond. So far, none has the combination we want of <br>
<br>
-- precise and stable enough readings<br>
--small and light enough for personal monitoring<br>
--ease in zeroing and calibrating<br>
--high enough upper limit -- they typically stop at 1 mg/me or
lower<br>
--ease in cleaning -- necessary for our environments or even
in dirty
Asian cities<br>
--reasonable battery life<br>
--easy datalogging, downloading, etc<br>
<br>
Our UCB-PATs+ does meet these criteria and is now undergoing
field
trials. (We are also flying it on our aerial particle
monitor
(drone) in India.) Would not expect it to be commercially
available
(from BA) until early next year, however."</span><br>
<br>
<br>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Jun 10, 2015 at 4:22 PM,
Roberto Poehlmann <span dir="ltr"><<a href="mailto:roberto.poehlmann@gmail.com" target="_blank">roberto.poehlmann@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div>Paul,</div>
<div><br>
</div>
<div>i found this links about specksensor, with
experiments results:</div>
<div><br>
</div>
<div><a href="http://publiclab.org/notes/chrisbartley/04-15-2014/speck-particle-monitor" target="_blank">http://publiclab.org/notes/chrisbartley/04-15-2014/speck-particle-monitor</a><br>
</div>
<div><br>
</div>
<div>This is another monitor of PM:<br>
</div>
<div><a href="http://www.dylosproducts.com/ornodcairqum.html" target="_blank">http://www.dylosproducts.com/ornodcairqum.html</a><br>
</div>
<div><br>
</div>
<div>..and another:</div>
<div><a href="http://aircasting.org/" target="_blank">http://aircasting.org/</a><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>Arduino:</div>
<div><br>
</div>
<div>In the world of Arduino, you can DIY your own PM
device, like this (Dustduino):</div>
<div><a href="http://publiclab.org/notes/Schroyer/11-23-2013/measure-coarse-and-fine-air-particulates-with-a-dustduino" target="_blank">http://publiclab.org/notes/Schroyer/11-23-2013/measure-coarse-and-fine-air-particulates-with-a-dustduino</a><br>
</div>
<div><br>
</div>
<div>It uses the sensor Shinyei PPD-42 Dust Sensor (<a href="http://www.seeedstudio.com/depot/grove-dust-sensor-p-1050.html" target="_blank">http://www.seeedstudio.com/depot/grove-dust-sensor-p-1050.html</a>)</div>
<div><br>
</div>
<div>This is a experiment to compare this Japan sensor
with a similar Korean Sensor, <a href="http://aqicn.org/sensor/shinyei/" target="_blank">http://aqicn.org/sensor/shinyei/</a></div>
<div><br>
</div>
<div>It says that "There are many affordable and
low-cost air particule sensor. The most famous one is
definitely the Japanese Shinyei sensor, with a cost of
around 75 CNY (12 USD)"</div>
<div><br>
</div>
<div><br>
</div>
<div>This is another DIY monitor with arduino:<br>
</div>
<div><a href="http://www.instructables.com/id/Make-one-PM25-monitor-with-Arduino-UNO/" target="_blank">http://www.instructables.com/id/Make-one-PM25-monitor-with-Arduino-UNO/</a><br>
</div>
<div><br>
</div>
<div>It uses the sensor SDS011 (link <a href="http://inovafitness.com/product-35.html" target="_blank">http://inovafitness.com/product-35.html</a>).</div>
<div><br>
</div>
<div><br>
</div>
<div>Finally, i found this document, that describe
various sensors and describe how it works.</div>
<div><a href="http://www.teco.edu/%7Ebudde/publications/inss2012_budde.pdf" target="_blank">http://www.teco.edu/~budde/publications/inss2012_budde.pdf</a><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>I have now two Arduinos, and i will make (some day)
my own datalogger (temp, PM, CO, oxygen, etc.). The
sensors for Arduino's are not to expensive, and in
Internet exists a lot of examples of this type of
devices.</div>
<div><br>
</div>
<div>This is, for example, a dalalogger made with
Arduino:</div>
<div><br>
</div>
<div><a href="http://www.instructables.com/id/Arduino-Temp-Logger/" target="_blank">http://www.instructables.com/id/Arduino-Temp-Logger/</a><br>
</div>
<div><a href="https://blog.adafruit.com/2010/09/07/a-thermocouple-datalogger-based-on-the-arduino-platform/" target="_blank">https://blog.adafruit.com/2010/09/07/a-thermocouple-datalogger-based-on-the-arduino-platform/</a><br>
</div>
<div><br>
</div>
<div>
<div>Cheers<span><font color="#888888"><br>
Roberto</font></span></div>
</div>
</div>
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</blockquote>
</div>
<br>
<br clear="all">
<br>
-- <br>
<div>Christina Espinosa<br>
University of the Pacific '10<br>
School of International Studies<br>
<a href="mailto:c_espinosa1@u.pacific.edu" target="_blank">c_espinosa1@u.pacific.edu</a><br>
</div>
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<br>
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