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UGF 2000

Liquid nebulizer with binary nozzle and cyclone (dp_max = 2 µm) as per VDI 3491-1 and -2

    dpmax in MPPS-range = 0.1 – 0.3 µm
    Known and reproducible particle size distribution using a cyclone
    Constant particle rate
    Low particle concentration
    Long dosing time
    Variable particle concentration by a factor of 500 through adjustment of the primary pressure and control air
    Compact, light, portable
    Easy handling and solid construction

Description

The UGF 2000 aerosol generator is able to atomize liquids with a binary nozzle.

The UGF 2000 comprises an adjustable binary nozzle for adjustment of the desired mass flow and a cyclone. Unlike the AGF series, UGF 2000 has a cyclone with built-in control air. The control air is adjusted using a micrometer screw on a needle valve. By opening this valve, the aerosol concentration is able to be reduced by a factor of approx. 500 through the addition of control air. As a result, the generator is ideally suited for testing laminar flow boxes and clean rooms with low volume flow.

Fig. 1: UGF 2000 functional diagram

Fig. 2: UGF 2000 schematic diagram

Startup

The compressed air is supplied to a binary nozzle via a pneumatic on/off switch and an adjustable pressure regulator. The mist of droplets generated by the nozzle flows tangentially into a cyclone. Large particles are separated here by centrifugal force and drip into a separate reservoir. The remaining droplets leave the cyclone via the so-called “immersion tube”. The size spectrum of these droplets is determined on the one hand by the primary droplet spectrum generated by the nozzle, but especially by the separation characteristics of the cyclone on the other hand.

Table 1: Overview of the AGF and UGF systems

Datasheet

Volume flow

1 – 13 l/min

Dimensions

270 • 200 • 175 mm

Weight

approx. 4 kg

Particle material

DEHS, DOP, Emery 3004, paraffin oil, other non-resinous oils

Dosing time

> 24 h

Mass flow (particles)

< 1.5 g/h (DEHS)

Compressed air connection

Quick coupling

Aerosol outlet connection

Øinside = 4 mm, Øoutside = 8 mm

Filling quantity

70 ml

Benefits

    dpmax in MPPS-range = 0.1 – 0.3 µm
    Known and reproducible particle size distribution using a cyclone
    Constant particle rate
    Low particle concentration
    Long dosing time
    Variable particle concentration by a factor of 500 through adjustment of the primary pressure and control air
    Compact, light, portable
    Easy handling and solid construction

Applications

    Clean room technology:
      -   HEPA/ULPA filter test
      -   Acceptance tests and leak tests as per ISO 14644 and VDI 2083
      -   Laminar flow boxes
      -   Recovery tests
    Filter testing, quality control:
      -   Filter cartridges, filter media, particulate air filters for low volume flows and small filter surfaces
     Smoke detector tests