VDS 562 Variable Aerosol Dilution System
Active pressure-drop-compensated dilution system providing continuously adjustable high dilution without an external particle-free air supply, with configurable calibration from 28.3 to 100 L/min.
Model Overview
| Model | Group | Positioning | Core fit |
|---|---|---|---|
| VDS 562 | Active variable aerosol diluter | Pressure-compensated high dilution without external clean-air supply | Concentrated aerosol measurement, cleanroom raw-gas dilution and process monitoring |
Key Features
High variable dilution in one device
Depending on capillary type and calibrated flow, the VDS 562 provides adjustable dilution over a broad range up to 1:100,000.
Pressure-drop compensation
An integrated controlled blower compensates pressure losses and automatically readjusts the flow to maintain stable dilution.
Multiple calibrated flow options
One unit can be factory calibrated for one or more flow rates between 28.3 and 100 L/min.
No external particle-free air supply
The dilution principle separates particles from the bypass flow, reducing external clean-air consumption.
Touchscreen setpoint control
Dilution factor and operating status are set through the integrated user interface.
Remote adjustment capability
A manufacturer-specific serial connection supports integration into automated measurement systems.
Technical Specifications
| Parameter | Unit | Value / Description |
|---|---|---|
| DILUTION | ||
| Purpose | — | Dilution of aerosols |
| Dilution-factor range | — | 12–100,000, depending on capillary and flow calibration |
| Setting resolution | — | 1 |
| Adjustment | — | Manual and controlled |
| Aerosol flow range | L/min | 28.3–100; one standard calibration, additional calibrations optional |
| CONTROL & ELECTRICAL | ||
| Power supply | — | 24 V DC, 1.3 A; adapter for 110–240 V AC |
| User interface | — | Touchscreen |
| Communication | — | Manufacturer-specific serial interface; optional cable |
| Power consumption | W | Maximum 35 |
| Noise emission | dB(A) | Maximum 62 ± 3 |
| CONNECTIONS & PHYSICAL | ||
| Hose connector | mm | Ø 8 at 28.3 L/min; Ø 13 above 28.3 L/min |
| Maximum counterpressure | kPa | ± 10 |
| Dimensions | mm | 130 × 200 × 300 |
| Weight | kg | 3.4 |
Specifications are based on Topas GmbH published product information. Confirm the current configuration, accessories and calibration scope before order placement.
Applications
High-concentration reduction
Reduction of concentrated aerosols to the operating range of optical particle counters and aerosol analysers.
Raw-gas dilution
Dilution of upstream challenge-aerosol concentrations during cleanroom and filter validation.
Coagulation control
Reduction of concentration in sampling lines to limit agglomeration and support stable process-aerosol measurement.
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