The Dust Feeder / Dust Disperser SAG 420 is a device for generating solid aerosols by transforming a powdered solid into the air-floating state and has a very large dosing range.
Standards
- dosing continuity of different dusts over a long period of time
- under operating conditions easy refillable
- mass flow control by weigh scale option
In applications where air-floating particles are required such as testing of the separation performance of filter media an aerosol with certain, well-defined characteristic features and stability over a period of time is to be used. If the aerosol is produced from a certain powder the characteristic features of the generated dust will be determined by the powder. Additional characteristic features of the aerosol are achieved by transferring the powder into the air-floating state. The process is divided into two parts: the continuous dosing of the powder mass flow and the dispersing (thinning out) of the powder preferably down to the primary particle size of the material.
Benefits
- dosing continuity of different dusts over a long period of time
- refill during operation
- mass flow control by weigh scale option
Applications
- charging of filters, filter media and separators with dust
- generation of dust to determine the fractional as well as the total separation efficiency
- visualization of air streams
Accessories
- movable rig SVE 430 for dust disperser SAG 420
- tripod holder
- hopper without dispersion nozzle to collect dosed dust – can be attached for weighing the dust and calibrating the device
- weigh option: optional scale available for mass flow control with a precision of 0.2 g/min that ensures exact feed over long periods of time, the generator is mounted on the scale in a vertically adjustable stand with housing
- Electrostatic Aerosol Neutralizer EAN 581 for discharging of the charged test dust
| Parameter title | Unit | Value |
|---|---|---|
| setting parameter 1 | - | dispersion pressure |
| setting range 1 | bar | 1 ... 6 (dispersion pressure) |
| setting resolution 1 | - | continously adjustable |
| setting parameter 2 | - | relative belt velocity |
| setting range 2 | % | 1 ... 100 (relative belt velocity) |
| setting resolution 2 | - | continously adjustable |
| setting parameter 3 | - | relative stirring frequency |
| setting range 3 | % | 0 ... 100 (relative stirring frequency |
| setting resolution 3 | - | continously adjustable |
| aerosol, volumetric flow rate | L/h | 3000 ... 18000 |
| aerosol, mass flow rate (aerosol substance) | g/h | 6 ...12000 (for bulk density of 1 g/cm³) |
| operating medium, aerosol substance | - | powder, powder mixtures (< 200 µm, non-abrasive, non-cohesive, non-toxic) |
| operating medium, aerosol substance - filling volume | mL | ≤ 2000 |
| operating medium, gas/air | - | dry, particle-free compressed air or technical inert gas |
| operating medium, gas/air - compressed air supply | bar | ≤ 8 |
| power supply | - | 110 ... 240 VAC; 50 ... 60 Hz |
| hose connector | mm | Ø 16 (ISO nozzle), Ø 25 (heavy duty nozzle) |
| dimensions (w × h × d) | mm | 150 × 450 × 400 (generator with hopper and nozzle); 295 × 160 × 215 (control unit) |
| weight | kg | 4,7 (generator with hopper and nozzle); 3,8 (control unit) |
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