[tobyportugal]

Hello,

The documentation of the MH-Z19 - MH-Z19B.

http://www.winsen-sensor.com/d/files/inf...ver1_0.pdf



http://www.winsen-sensor.com/d/files/PDF...Ver1.0.pdf

The version B is more precise but consumes more current.

Good day.

[tobyportugal]

Good evening,

That can be useful for your assemblies.
The breakdown of my sensor SHARP is because of spider web!!





It is necessary to think of mounting a sieve.
https://www.cuisineaddict.com/ar-tamis-b...4_1342.jpg

[Palmyweather]

The dust sensor should be installed in a well ventilated place, far from some "human influences". If you are just smoking a cigar at some meters from them, the readings can go very high quickly.

How do the dust sensors get on with pollen from the likes of trees etc? Right now we are heading into spring and everything is turning into a light yellow colour around my place with pollen, not to mention I'm also sneezing my head off. What would your recommendations be for mounting the dust sensor in proximity to pollen producing trees? Will this have an affect on the readings like smoking, or are these types of particles outside of what the sensors are looking for?

This can also bring up the question of maintenance for the Air Quality Monitor. What would the recommended cleaning frequency be for these sensors based upon the research done during the testing/development stage of this board?

Kind regards,
PalmyWeather

[werk_ag]

I think that pollens fall more in the PM10 particles category, so they shouldn't affect the AQ Index, which is based only in the PM2.5 readings.

This can also bring up the question of maintenance for the Air Quality Monitor. What would the recommended cleaning frequency be for these sensors based upon the research done during the testing/development stage of this board?

Do you think I really know the answer to this question?  
From what I read from the guys at aqicn.org, the plantower sensors are not prune to accumulate dust inside.

[tobyportugal]

Hello,

I have been researching pollen.
Normally pollen can not reach the lower respiratory tract of the lungs.
On the other hand the pollen has the fact of being hooked to the PM, the PM are able to reach the lower parts of the lungs.
This is what causes allergies due to pollution.
My logic tells me that the pollen can come to foul the sensor.
A verify but it seems logical.

In astronomy, I use an optical/barlow/DO/... cleaning product (without solvent, bio), when I have to recover my AQI,
I will test this product on the old sensor SHARP.

https://purosol.com/

Excellent day.