MODEL 5520

THE aDBD NEUTRALIZER

An annular dielectric barrier discharge neutralizer

The GRIMM 5520 aDBD aerosol neutralizer is based on an annular dielectric barrier discharge that produces a bipolar ionic atmosphere. Irregularly charged particles (from ambient or lab generated) are brought into a defined stationary-state charge distribution, regardless of their initial charging state. The aDBD was developed as alternative to established aerosol chargers / neutralizers since it avoids the need to use radioactive radiation to produce molecular ions to bring aerosol particles into a defined charging state. Therefore, no special handling license is required for the GRIMM 5520 aDBD aerosol neutralizer. As all GRIMM neutralizers, the aDBD 5520 is compatible with all GRIMM DMAs and GRIMM SMPS+C systems.

Overview

  • non-radioactive source
  • no transport / storing restrictions
  • low maintenance
  • easy to operate and safe
  • compatible with GRIMM SMPS+C systems

Applications

  • neutralizer for aerosol sizing with SMPS systems
  • neutralizer for particle generators
  • fundamental aerosol research
  • investigation of particle charging

TECHNICAL DATA

high voltage supply

6 – 8 kV

frequency

20 kHz ±20%

maximum particle concentration

> 104 p/cm³

ion generation method

dielectric barrier discharge plasma

aerosol flow rate

0.3 L/min

aerosol medium

air (not useable with Ar, N2 or corrosive gases)

ambient temperature

0 – 40°C (50 – 104°F)

ambient humidity

20 – 95% RH

absolute pressure range

700 – 1100 mbar

power supply

100-240 VAC, 50/60 Hz

power consumption

15 W

dimensions (h x w x d)

16.0 x 21.0 x 6.5 cm (6.3 X 8.3 x 2.6 inch)

weight

1.6 kg (3.5 lbs)

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