[Stoves] Off-topic Re: New PM2.5 health impact analysis

[Ronal W. Larson]

Andrew  (and adding the stove list)

	Thanks.  This looks important.

	It being late; I'll add more tomorrow.

Ron


> On Sep 10, 2018, at 2:40 AM, Andrew Heggie <aj.heggie at gmail.com> wrote:
> 
> On Sun, 9 Sep 2018 at 22:44, Ronal W. Larson <rongretlarson at comcast.net> wrote:
>> 
>> Andrew  cc List:
>> 
>> Can you give us more detail on your $20 unit from Alibaba?  Name, model, etc.
> 
> Ronal here is the current link
> 
> https://www.aliexpress.com/item/nova-PM-sensor-SDS011-High-precision-laser-pm2-5-air-quality-detection-sensor-module-Super-dust/32317805049.html
> 
> In the picture on the top right a small tube extends, this is the
> sampling port. The device connects to a USB port but uses a converter
> as the signal is old fashioned serial port  configuration.and  a small
> fan sucks in the air. It updates about once per second and gives a
> readout to the computer (via the serial port) of PM2.5 and PM10. I use
> a simple python script I modified and have the readout on my screen,
> it would be simple to log it to a file instead.
> 
> At the moment I have it by me and am seeing a PM 2.5 figure of 4-5
> mg/m3 but of course I have nothing to compare it with for calibration.
> 
> It seems to work much as Frans Peeters suggested to modify a cd reader
> so I imagine that they have used a cheap laser of the same ilk to do
> this.
> 
> Andrew