MODEL KS-219

 EIGHT-STAGE CASCAD IMPACTOR WITH BACKUP FILTER FOR THE FRACTIONATED SAMPLING OF SOLID PARTICLES AND AEROSOLES

KS-219

1. Purpose

The KS-410 type portable, partial gas flow emission type sampling circuit implemented with the KS-219 type 8 staged cascaded impactor – in automatic operation - is capable of the isokinetic, continuously periodical, total or fractionated sampling of solid particles in flowing air or gas.

The KS-410 type measuring circiut implemented with the KS-219 type cascaded impactor simultaneously with the gravimetric determination of concentration of solid particles and the fractional composition of the flowing air or gas the device is capable of measuring and monitoring the temporal changes of the the velocity of the main gas flow or the sampled medium.

2. Technical description

The eight stage cascade impactor KS-219 type device offers completely new solutions. Even its evaluation system follows the latest fluid mechanical configurations. For the sake of increasing the impact effect and decreasing dimensions particles are accelerated in an annular nozzle to the proper impact velocity. The KS-219 type cascaded impactor consists of a lead-in diffuser, eight impactor stages and an backup filter. To avoid reproduction errors occurring owing to the different adhesive capacity of particles, stages have a chamber configuration and are properly separated for scaling.

SPECIAL FEATURES

  • Eight impactor stages.

  • Rapidly changeable impactor stages suitable for performing sequential, continuously periodical measurements.

  • 30% smaller external dimensions, 40% less mass performing the same flow rate.

  • The chambers of the impactor stages can be well separated for scaling.

  • Cleaning and the periodic size-control of the annular vent nozzles are extremely simple.

  • Dust storage capacity is variable by the changing of the collector plates.

    • Figure 1. shows the cross-section of the KS-219 type impactor assembled.

    The separation characteristics of the KS-219 type impactor, so called are represented in Figure 2.

    3. Technical data
  • Nominal flow rate depending on t1:
    		• 5.0 - 9.0 [m3/h]
  • Measuring range:
    		• 3.0 - 10.0 [m3/h]
  • Aerodynamic resistance with clean filter:
    		• 103 [mbar], q=7.0 [m3/h], Ro=1.2 [kg/m3]
  • Number of impactor stages:
    		• 8
  • Particle separation values - cut-points:
    		• AR-COM 219 v3.2 software
  • Max. temp. with Teflon gasket:
    		• 180 [°C]
  • Back-up filter:
    		• Æ 69 [mm]

    Figure 1.

    Figure 2.
    Series KS-219 Cascade Impactor
    50% effective cut diameter
    Rop=1,0 [kg/dm3]Pre-
    sepa-rator A    		Pre-
    sepa-rator B    		Stage 1.Stage 2.Stage 3.Stage 4.Stage 5.Stage 6.
    t(i) = 20 [°C]d(ae) [µm]d(ae) [µm]d(ae) [µm]d(ae) [µm]d(ae) [µm]d(ae) [µm]d(ae) [µm]d(ae) [µm]
    q=5.0 [m3/h]19.815.914.49.76.43.31.30.68
    q=6.0 [m3/h]18.114.512.28.85.83.01.20.61
    q=7.0 [m3/h]16.713.411.38.25.42.81.10.56
    q=8.0 [m3/h]15.612.610.67.65.02.61.00.52
    q=9.0 [m3/h]14.711.810.07.24.72.50.90.49