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Gravimetrical dust analysis
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By this method a known amount of air is fed to a filter.
The dust in the air is trapped with an efficiency > 99%.
The total dust particles are the sum of the respiratory
and thoral fractions.
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Iso-kinetic dust analysis (dust-emissions)
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During sampling the linear velocity of the sampling gas in the
the sample-probe is equal to the linear velocity of the main stream.
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Optical dust monitoring
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With the on-site dust monitor the particles in the air are
measured directly. The technique is based on the
reflection of infra red light.
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Calibration and validation can performed for all methods.
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