particulate monitor Articles
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Inside the Particulate Monitor – the Triboelectric Method
The triboelectric measurement principle (in a refined design referred to as Inductive Electrification Technology) can be used to measure dust concentrations in industrial processes. It is based on the dust particles becoming electrically charged as they move through the flue gas duct. The charges are picked up by an insulated probe inside the duct and then registered. Electrical Characteristics ...
By OPSIS AB
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Inside the Particulate Monitor – Optical Methods
At least two different optical techniques can be applied to measure the concentration of particulates – light absorption and light scattering. Light absorption is frequently used in high-concentration industrial processes, but it has some applications also in ambient air, for example to determine visibility at airports. Light scattering is utilized both in industrial and ambient ...
By OPSIS AB
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Inside the Particulate Monitor – Filter Samplers
Some time ago, OPSIS published descriptions on how some well-established types of gas analysers work, namely those based on spectrometers, interferometers, and tuneable diode lasers. They all utilize absorption of light to determine the concentrations of gaseous pollutants such as nitrogen oxides (NOX), sulfur dioxide (SO2), hydrogen chloride (HCl), ammonia (NH3), and many more. The same ...
By OPSIS AB
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