ATM 220 Aerosol Generator
Atomizer Aerosol Generator ATM 220 for aerosol generation from liquids, compressed air operated, base model with broad operational range
By high generated particle numbers at a particle size distribution oriented at the Most Penetration Particle Size (MPPS) of the filter the locating of leaks in the system is possible fast and safe. Using an oily aerosol substance the aerosol generator produces spherical particles mainly in the size range 0,1 … 0,5 µm with a calculable residence time. That does nearly not extra contaminate the filter material.
A further range of application for aerosol generators is calibration of measuring devices and visualization of air flows. That enables measurements of local velocities and flow profiles of the tracer particles by means of optical methods.
Standards
Applications
- aerosol generation from pure liquids, solutions and suspensions
- fractional efficency testing of filter media and filter elements
- generation of long-term stable test and process aerosols
- calibration and validation of particle measurement techniques
The atomizer is the key part of the atomizer aerosol generator ATM 220. It is made of high quality stainless steel and works as a two-stream nozzle, based on the injection principle. The unique feature is that the outlet points towards the wall of the glass vessel which works as the baffle plate. This particle impaction section removes coarse spray droplets and results in a particle size distribution mainly below 1 µm. Depending on the flow rate, the cut point of the impactor varies, but this has quasi no impact on the submicrometer range of the particle size distribution of the aerosol. The air is cleaned by a HEPA-filter before it is introduced to the atomizer.
| Parameter title | Unit | Value |
|---|---|---|
| setting parameter | - | pre-pressure |
| setting range | bar | 0,5 ... 6,0 |
| setting resolution | - | continously adjustable |
| volumetric flow rate, aerosol | L/h | 50 ... 250 |
| aerosol, mass flow rate (aerosol substance) | g/h | max. 2 |
| aerosol, particle production rate | #/s | > 2 × 10¹⁰ (> 0,02 µm) |
| aerosol, particle size range | µm | 0,01 ... 5 |
| aerosol, distribution width (geometric standard deviation) | - | 1,8 ... 2,2 (polydispers) |
| operating medium, gas/air | - | dry, particle-free compressed air or pressurised inert gas |
| operating medium, gas/air - compressed air supply | bar | max 6 |
| operating medium, aerosol substance | - | pure liquids (DEHS, PAO, DOP, ...), solutions (salts, ...), suspensions (PSL, ...) |
| operating medium, aerosol substance - filling volume | mL | 10 ... 80 |
| environmental condition, max. counterpressure | kPa | max. 20 |
| environmental condition, temperature | °C | 0 ... 50 |
| hose connector, outlet | mm | Ø 8 (outer diameter) |
| dimensions (w × h × d) | mm | 260 × 175 × 220 |
| weight | kg | 3,3 |
- aerosol substance DEHS
- further aerosol substance like PAO (Emery 3004) on request
- diffusion dryer (DDU 570/L, DDU 570/H)
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