Download Corona Discharge Unit

Sophisticated Life Science Research Instrumentation
Corona Discharge Unit
For Reducing Electrical Charges on Aerosol Particles
www.TSE-Systems.com
[email protected]
Specifications
Total aerosol flow rate
1...15 m³/h (17…250 lpm)
Dust and liquid aerosols
0.1 ... 150 μm
Pressurized air supply
max. 8 bar
Power supply
100 ... 260 V AC
Power consumption
approx. 50 W
Fuses
2A / F
Ionization voltage
0 ... 10 kV
Ionization current
0 ... 150 μA
Dimensions of control unit
approx. 480x260x160 mm
Weight of control unit
approx. 7.5 kg
Mixing cell with ionization heads
approx. 1.2 kg
Input (potential free)
3 ... 30 V DC - typically 1 mA
Output (potential free)
0 ... 60 V AC/DC - max. 400 mA
Ordering Information
Cat. No.
Description
700700-Dis
Discharge Unit CoDis
for reducing positive and negative electrical charge of liquid and dust aerosols.
The Corona Discharge Unit produces in two separate chambers positive and negative ions by a high
voltage corona discharge.
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no radioactive substances (permission unnecessary)
positive and/or negative ions
independent of aerosol mass flow differences
rapid on/off switching of the ionic source
adjustment of the discharge unit/adjustment of ionic concentration
easy control of the functions
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Corona Discharge Unit
Operating Principle
The discharge unit is based on the corona discharging principle
and consists of a mixing cell with two separate ionization heads
and a control unit. The control unit is used for parameter settings and function monitoring.
Based on the physical principle of corona discharge caused by
electrical fields, positive or negative ions are produced in the
so-called ionization heads according to the polarization of the
applied high voltage.
Corona Discharge Unit
The ionization heads produce positive and negative ions that
are transported in succession to the mixing cell in the flow of
compressed air connected to both of the ionization heads.
Introduction
Particles dispersed in aerosols are often highly charged due
to mechanical interactions between one another and with the
environment. These interactive forces can lead, for example,
to agglomeration or other interactions which can be observed
during particle size distribution characterization, sampling or
separation of particles. This is why any such charges should be
neutralized or, alternatively, the particles should have unipolar
charges in order to avoid such effects.
Working principle
The corona discharger principle means that both positive and
negative ions can be produced reproducibly and variably without the use of radioactive materials. With the Corona Discharge
Unit it is possible to adjust the charge conditions in aerosols by
using a defined supply of both positive and negative ions in a
specially designed mixing cell.
The special design of the mixing cell guarantees almost ideal
mixing conditions for highest charging/discharging efficiency.
Due to the charge exchange on the particle surfaces the particles become charged/discharged. The control unit provides
the high voltage and constant ionization current supplied to
the ionization heads.
The degree of neutralization can be optimized for the particular
application because both ion sources can be adjusted independently.
The Corona Discharge Unit can condition dust as well as other
aerosols by mixing it with positive and negative ions in a defined manner to obtain charge neutralization.
Special Advantages
■■ Aerosol
neutralization (charging) without radioactive source
adjustment of both positive and negative ions
Easy to integrate into existing inhalation systems and other
exposure systems
Ionisation heads and mixing cell
■■ Separate
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Both the operating voltages as well as the operating current
are displayed on the control unit front panel in kV and μA for
precise and reproducible adjustment.
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Sophisticated Life Science Research Instrumentation
TSE Systems offers additional modules to create a complete exposure
system. Please find out more about:
■■ Head
Nose Only Exposure Units
Modular, stackable structure for different size conditioning units. Available for
animal sizes from mouse to dog with directed-flow principle
Service & Warranty
TSE Systems offers a Two (2) Years ALLIN Premium Warranty with all new products, including:
24/7 technical hotline
Remote maintenance and update
function
■■ On-site visits upon necessity
■■ Free replacement parts
■■ ■■ ■■ Whole
Body Exposure Units
Robust, user-friendly design for homogeneous test substance distribution.
Different volumes available for variable animal sizes and test animal numbers
■■ Cell
Culture Exposure System
Ideally suited system for screening tests with tissue, using Transwell® inserts of
varying sizes. Extended viability of cultures by heating/humidification
■■ Nanoparticle
Analysis
TSE System offers instrumentation to analyze nanoparticle size and concentration, such as Condensation Particle Counter or Differential Mobility Analyzer
After the expiry of the warranty period,
TSE Systems offers comprehensive extensions of the warranty or economical
maintenance and repair contracts to ensure the continued smooth running of
your instruments. Please contact us for
further details.
■■ Daco
Inhalation Software
Control and recording software for inhalation systems with multi-control mode
for system extension. Advanced safety and GLP compliance features
■■ Sensors
and Controllers
TSE Systems supplies a number of environmental sensors and mass flow controllers specifically designed for each inhalation system
Specifications subject to change without notice
Copyright © 2014 TSE Systems International Group - All rights reserved
www.TSE-Systems.com
[email protected]