Variable Dilution System VDS 562 for variable adjustable, pressure drop compensated dilution of aerols at defined air flow rates
Made in Germany. brand TOPAS, model VDS 562
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The Variable Dilution System VDS 562 was especially developed to lower concentration levels of highly concentrated aerosols to adequate concentration levels by one device, without external particle-free air supply and negligible pressure drop.
For optimal aerosol-analytical conditions, several measurement and test applications require a defined reduction of the particle number concentration (VDI 3491). Depending on the application, dilution factors between > 1 up to 1’000’000 can become necessary. In practise, especially the realisation of high dilution factors (> 1’000) is complicated (e.g.: cascading of dilution systems) and is accompanied either by a considerable pressure drop or by an excessive air consumption. The dilution factor of a VDS 562 can be varied within each operation range over approximately one decade. According to the customer’s requirements, one VDS 562 device can be calibrated for multiple flow rates from 28,3 l/min up to 100 l/min.
The principle of operation of the VDS 562 is based on the approved dilution principle used by Topas, where the inlet aerosol flow is split at first by a flow resistance (capillary).
After particle separation from the bypass, both the capillary flow and bypass flow are consolidated. This results in a reduced concentration at the outlet of the dilution system.
A controlled blower within the bypass compensates pressure drop and serves for automated readjustment of the flow rate to ensure a constant dilution over time.
BENEFITS
APPLICATIONS
| Parameter title | Unit | Value |
|---|---|---|
| purpose of conditioning | – | dilution of aerosols |
| sample condition, outlet | – | diluted aerosol |
| setting parameter | – | dilution factor |
| setting range | – | 12 … 100’000 (range depending on type of capillary and flow rate, see product sheet) |
| setting resolution | – | 1 |
| setting method | – | manual, controlled |
| aerosol, volumetric flow rate | L/min | 28,3 … 100 (one or more defined flow rates) |
| sample condition, inlet | – | non-diluted aerosol |
| power supply | – | 24 V DC, 1,3 A (including power supply pack for 110…240 V AC) |
| communication interface | – | manufacturer-specific (requires optional serial cable) |
| user interface | – | touch screen |
| power consumption | W | max. 35 |
| noise emission | dB(A) | max. 62 ± 3 |
| hose connector | mm | Ø 8 (28,3 L/min), Ø 13 (> 28,3 L/min) |
| environmental condition, max. counterpressure | kPa | ± 10 |
| dimensions (w × h × d) | mm | 130 × 200 × 300 |
| weight | kg | 3,4 |
ACCESSORIES
You can request the necessary certificates, documentation, instructions and user manuals for TOPAS VDS 562 using the special form.
You can buy TOPAS VDS 562 in UK or Europe at a favourable price in «DOLCHETRADE» by leaving a request on the website, by phone +441225535040 or by email dolce@dolcetrade.com. TOPAS VDS 562 price are subject to change depending on exchange rates. We deliver instruments by transport companies in the United Kingdom and Europe.
See also: Aerosol Diluters for clean room
