SAG 440 ASHRAE Dust Disperser
Belt-dosing solid-aerosol generator developed for reproducible dispersion of ASHRAE 52.2 test dust and other fibre-containing powders in ventilation-filter loading, separation-efficiency and dust-monitor evaluation workflows.
Model Overview
| Model | Group | Positioning | Core fit |
|---|---|---|---|
| SAG 440 | ASHRAE belt-dosing dust disperser | Feeding belt, dosing wheel and pneumatic dispersing nozzle adapted to fibre-containing ASHRAE test dust | Ventilation-filter dust holding, separation-efficiency testing and dust-sampler or monitor evaluation |
Key Features
Designed for fibre-containing dust
The feeding belt, paddle wheel and dispersing nozzle are adapted to ASHRAE 52.2 dust and comparable powders containing fibres.
Reproducible adjustable dosing
Test-aerosol concentration is controlled through the belt and dosing-wheel speeds over a 4–350 g/h dosing range.
Continuous long-duration operation
The dust supply can be replenished during operation, supporting extended filter-loading and capacity tests.
Optional control and neutralisation
An optional remote-control unit supports manual or computer operation, while the EAN 581 can reduce electrostatic charging.
Technical Specifications
| Parameter | Unit | Value / Description |
|---|---|---|
| TEST DUST AND DOSING | ||
| Primary test dust | — | ASHRAE 52.2 test dust: 72% SAE fine, 23% powdered carbon and 5% cotton linters |
| Other suitable materials | — | Other fibre-containing dusts, for example DMT dust Type 8 |
| Dosing principle | — | Feeding belt with dust paddle wheel and pneumatic dispersing nozzle |
| Dosing range | g/h | 4–350 |
| Dosing channel W × H | mm | 114.5 × 20 |
| UTILITIES AND CONTROL | ||
| Compressed-air supply | — | 7 m³/h at 5 bar; maximum pressure 6 bar; clean, dry and oil-free |
| Power supply | — | 100–240 V AC, 50–60 Hz |
| Remote control | — | Optional unit for manual or computer control |
| Aerosol neutralisation | — | Optional Topas EAN 581 electrostatic neutraliser |
| PHYSICAL | ||
| Generator / uptake-unit dimensions | mm | 1,150 × 290 × 400 |
| Control-unit dimensions | mm | 300 × 130 × 185 |
| Weight | kg | 33.5 |
Values shown are manufacturer specifications for model selection. Confirm the final configuration, accessories, utilities and calibration scope before ordering.
Applications
Dust-holding-capacity testing
Supplies controlled ASHRAE test dust for filter loading and dust-holding-capacity procedures.
Separation-performance evaluation
Supports measurements of filter separation efficiency using reproducible fibre-containing test aerosols.
Conditioning and loading tests
Fits ventilation-filter test benches requiring controlled ASHRAE dust dosing under ISO 16890-3 procedures.
Sampler and monitor evaluation
Provides a stable dust source for comparative evaluation and calibration of dust samplers and monitors.
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