Description
A representative sample taking is one of the basic requirements to measure aerosols correctly with a high-quality aerosol spectrometer as e.g the welas® digital or the Promo® system. To have always a repeatable and representative sample taking, Palas® provides the sample taking system ISP 1000.
Important parameters for the sample taking are:
Important parameters for the sample taking are:
•    Isokinetic suction with isokinetic inlet nozzles AIP
–Â Â The velocity at the inlet of the sample taking must be the same as the gas velocity at the point of sample taking to avoid a desmixing of the aerosol.
–  The suction air flow for the welas® aerosol sensors is fixed, the inlet diameter for the isokintic aerosol sampling nozzle can be varied. Therefore Palas® offers a huge variety of different aerosol sampling nozzles AIP.
AIPs / Overview sampling probe points AIP for sampling probe volume flow of 5 l/min and standard sampling tube (stainless steel: inner diameter: 6 mm, outer diameter: 8 mm)
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Description
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For flow velocity in the duct
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AIP 103
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0.008 – 0.012 m/s
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AIP 86
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0.012 – 0.017 m/s
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AIP 72
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0.017 – 0.025 m/s
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AIP 60
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0.025 – 0.036 m/s
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AIP 50
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0.036 – 0.052 m/s
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AIP 41
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0.052 – 0.074 m/s
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AIP 35
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0.074 – 0.11 m/s
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AIP 29
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0.11 – 0.15 m/s
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AIP 24
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0.15 – 0.22 m/s
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AIP 20
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0.22 – 0.32 m/s
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AIP 16.6
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0.32 – 0.46 m/s
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AIP 13.9
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0.46 – 0.66 m/s
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AIP 11.6
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0.66 – 0.95 m/s
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AIP 9.6
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0.95 – 1.37 m/s
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AIP 8.0
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1.37 – 1.98 m/s
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AIP 6.7
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1.98 – 2.85 m/s
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AIP 5.6
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2.8 – 4.1 m/s
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AIP 4.6
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4.1 – 5.9 m/s
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AIP 3.9
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5.9 – 8.5 m/s
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AIP 3.2
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8.5 – 12 m/s
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AIP 2.7
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12 – 17.5 m/s
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AIP 2.3
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17.5 – 21 m/s
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AIP 2.0
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21 – 31 m/s
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