Suspended dust sensor SDS011 PM2.5 PM10 - commissioning, test

TechEkspert wrote:

@gdL
Perhaps the materials from the dismantling of dust sensors will help:
https://aqicn.org/sensor/sds011/
https://www.netidee.at/dustmap/feinstaubsensor-teardown
https://aqicn.org/sensor/pms5003-7003/de/
http://takingspace.org/wp-content/uploads/ShinyeiPPD42NS_Deconstruction_TracyAllen.pdf
https://itp.nyu.edu/archive/physcomp-spring2014/sensors/Reports/GP2Y1010AU.html

I found such links (unfortunately in Korean)
Honeywell HPMA115S0 http://blog.naver.com/PostView.nhn?blogId=i2asys&logNo=221266559825
Sharp GP2Y1010AU0F http://blog.naver.com/PostView.nhn?blogId=i2asys&logNo=221266497730

I bought it for myself out of curiosity, it will probably come this week.

best regards

Here is a description of the sensor of its own production:
Link

Has anyone received the sensor they ordered and can share some insights on how it works?

Hello

The sensor reached me
Overall I won't say anything interesting works fine.

If someone would like to use I2C, you can only read the mass concentration, i.e. ug / m ^ 3

On the web I found a few examples on arduino to quickly prototyping myself but you had to write it yourself.

The interesting thing is that the dust concentrations are returned in floating point values.

It has some nice gadgets but how it is measured will turn out after a few months.

The operation is much more complicated than in typical Chinese products.
For now, if someone does not care about the size, it makes no sense to overpay.

vania wrote:

TechEkspert wrote:

@gdL
Perhaps the materials from the dismantling of dust sensors will help:
https://aqicn.org/sensor/sds011/
https://www.netidee.at/dustmap/feinstaubsensor-teardown
https://aqicn.org/sensor/pms5003-7003/de/
http://takingspace.org/wp-content/uploads/ShinyeiPPD42NS_Deconstruction_TracyAllen.pdf
https://itp.nyu.edu/archive/physcomp-spring2014/sensors/Reports/GP2Y1010AU.html

I found such links (unfortunately in Korean)
Honeywell HPMA115S0 http://blog.naver.com/PostView.nhn?blogId=i2asys&logNo=221266559825
Sharp GP2Y1010AU0F http://blog.naver.com/PostView.nhn?blogId=i2asys&logNo=221266497730

I do not recommend this first sensor
The second one is fine and is the only sensor that makes sense and is properly certified for EMC etc.

best regards

RaStro wrote:

I am mainly wondering how the heating of the air is supposed to affect the presence of steam (water steam, I assume)? Because the fact of heating the air does not remove steam from it, the only thing that happens is the so-called relative humidity changes, because this one depends on the temperature.

I bet because I was supposed to ask exactly the same.
However, I think that it is not water vapor that is the problem, but water in the form of an aerosol, i.e. fog, because the drops can be counted like dust. Should the heating then serve to evaporate the water?

I observed such a sensor on the airly.eu website in my area, when there was a fog, it always showed exceeding the norm by several hundred percent.
Either the fog increases the smog this way, or it is a distortion of the sensor.