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1. Summary
Air Dust Monitor monitors the flying dust concentration for 24 hrs.
After automatically taking in the air including dusts from the air inlet, the dust solid particles
in the air make a transfer of electric charge to the electrode by touching with or passing
near the probe of Air Dust Monitor.
This transfer of electric charge is widely known as triboelectricity or contact charging.
This product will output a 4 to 20mA signal in proportion to the dust amount and some contact
signals, through filtering and amplifying the transfer amount of electric charge.
Important: Dust concentration measurement of triboelectric type Dust Monitor
The triboelectric type Dust Monitor will change an output value in its measurement principle,
corresponding to a variety of environmental factors such as “kind of particle”, “particle
diameter”, “specific gravity” and “flow velocity”.
However, obviously the linearity under a fixed environment will not change.
Regarding the concentration of the triboelectric type dust monitor, as mentioned above, it is
required to consider the effect of physical property change and it is not necessarily corresponding
to the specified concentration.
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