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SAG 410/U

Solid Aerosol Generator SAG 410/U for aerosol generation from powders, ring dosing, low mass flow rates, best for powders with low flowability

Solid-particle aerosols are used for research, development and quality management in numerous fields. They are produced by dust generators. In case dry and easy flowing substances are applied, the dust generators of the model series SAG 410 are suitable.
Solid Aerosol Generator SAG 410/U side view
They transport the solid material using a dosing belt (VDI 3491-3). This ensures a continuous, constant and exact dosing. The dust generators of Topas GmbH consist of a control unit and a dispersion unit.

The modular design enables the user to realise a wide range of powder mass flows. The fine adjustment of the powder mass flow is done by a comfortable infinitely variable control of the belt speed. Finally, the powder is transported by suction from the dosing belt and dispersed using a two-component nozzle (designed in accordance with ISO 5011).

In case poor-flowing powders such as Pural NF are used for the generation of aerosols, the dust generators SAG 410/U or SAG 410/P are suitable. The transport of the solid material is performed by a feed screw and dosing ring. If the used solid material also tends to adhere to surfaces, the use of a special nozzle (P-nozzle) ensures the suction of the solid material from the dosing ring.

Standards

VDI 3491-3
ISO 5011
OECD 403
OECD 413
VDI 3926-2
Interested? We will gladly advise you

+49 (351) 2166 430

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Benefits

  • constant powder dosing over time due to speed control
  • modular concept for combining a control unit with different dosing and dispersing units
  • constant and reproducible feed rate over a wide range – suitable for many applications
  • highly accurate, user-independent metering of the powder
  • simple interchangeable dispersing units allow a single instrument to have an enormous mass output range
  • easy to clean and change material
  • remote control units for both manual or computer control are available
  • high concentration even at small flow rates – speeds up testing in low flow applications
  • refillable during operation without any effect on the aerosol concentration – ideal for long term studies
  • convenient unit control
  • flexible use and simple operation

Applications

  • filter efficiency measurement of filter media and other separators
  • aerosol research
  • Untersuchungen zur Optimierung von Verbrennungsprozessen
  • mixing and coating processes (e.g. within ceramics technology)
  • inhalation and toxicology studies
  • flow visualisation, LDV and PIV applications

The generator models SAG 410, SAG 410/L and SAG 410/H, SAG 410/M, SAG 410/V use the same principle of feeding the powder by a special feeding belt. The defined segments warrant a constant and reproducible supply of the powder even in small quantities. The resulting particle number concentration of the output aerosol can be easily adjusted by setting the feeding belt speed over a wide range.

Filling the small segments is realized by the scraper. Its design enables a constant dosing of the powder that is nearly independent of the powder reservoir filling level. The reservoir can be refilled during operation without any effects on the aerosol concentration.

The dispersing unit consist of a dual-stream ejector nozzle (similar to DIN ISO 5011) and a tube connection to the housing for compressed air supply. Shear forces created in this ejector disperse and deagglomerate the powder to form an aerosol.

Parameter title Unit Value
setting resolution 3 - continously adjustable
setting range 3 % 0 ... 100 (relative rotational frequency of reservoir and feeding screew)
setting parameter 3 - relative rotational frequency of reservoir and feeding screw
setting resolution 2 - continously adjustable
setting range 2 % 0 ... 100 (relative rotational velocity of ring)
setting parameter 2 relative rotational velocity of ring
setting resolution 1 - continously adjustable
setting range 1 bar 1 ... 6 (dispersion pressure)
setting parameter 1 - dispersion pressure
aerosol, mass flow rate (aerosol substance) g/h 0,2 ... 25 (for bulk density of 0,95 g/cm³)
aerosol, volumetric flow rate L/h
operating medium, aerosol substance - powder, powder mixtures (< 200 µm)
operating medium, gas/air - dry, particle-free compressed air or technical inert gas
power supply - 100 ... 260 VAC; 47 ... 63 Hz
operating medium, gas/air - compressed air supply bar ≤ 6
operating medium, aerosol substance - filling volume mL ≤ 70
dimensions (w × h × d) mm 330 × 310 × 360
weight kg 10,0
hose connector mm 9,0 (outer diameter)
  • Casari N., Suman A. and Pinelli M. Porosity-Driven Approaches to Model Fouling Effects on Flow Field Journal of Turbomachinery 142 (2020) 4, 041005
    dx.doi.org/10.1115/1.4045989
  • Abram C, Yehia OR, Ju Y. A solid particle seeder for particle-based laser measurement techniques in low volume-flowrate gas streams Measurement Science and Technology 30 (2019) 11, 117001
    dx.doi.org/10.1088/1361-6501/ab2fa9
  • Simonow BK, Wenzlaff D, Meyer-Plath A, Dziurowitz N, Thim C, Thiel J, Jandy M, Plitzko S. Continuous dry dispersion of multi-walled carbon nanotubes to aerosols with high concentrations of individual fibers Journal of Nanoparticle Research 20 (2018) 6, 154
    dx.doi.org/10.1007/s11051-018-4262-y

Silimar products

SAG 410

Solid Aerosol Generator SAG 410 for aerosol generation from powders, toothed belt dosing, moderate mass flow rates

Solid Aerosol Generator SAG 410 side view
detail view

SAG 410/H

Solid Aerosol Generator SAG 410/H for aerosol generation from powders, toothed belt dosing, high mass flow rates

Solid Aerosol Generator SAG 410, front view
detail view

SAG 410/L

Solid Aerosol Generator SAG 410/L for aerosol generation from powders, toothed belt dosing, low mass flow rates

Solid Aerosol Generator SAG 410 side view
detail view

SAG 410/P

Solid Aerosol Generator SAG 410/P for aerosol generation from powders, ring dosing, low mass flow rates, large reservoir, best for powders with low flowability

Solid Aerosol Generator SAG 410/P, frontal view
detail view

SAG 410/M

Solid Aerosol Generator SAG 410/M for aerosol generation from powders, toothed belt dosing, low mass flow rates, large reservoir

Solid Aerosol Generator SAG 410 side view
detail view

SAG 420

Solid Aerosol Generator SAG 420 for aerosol generation from powders, belt dosing, high mass flow rates, best for motor intake filter testing acc. ISO 5011

Dust Disperser SAG 420, frontal view
detail view

SAG 440

Solid Aerosol Generator SAG 440 for aerosol generation from powders, belt dosing, best for ASHRAE dust (for ASHRAE 52.2, ISO 16890-3, EN 779)

ASHRAE Dust Disperser SAG 440, front view
detail view