The aerosol generator ATM 222 combines selected technical features of the generators ATM 220 and ATM 228 for long-term stable generation of test aerosols, calibration aerosols or process aerosols from pure liquids (oils like DEHS or PAO, water), solutions (salt solution, sugar solutions) and suspensions (A2, PSL). The generator complies to all requirements of VDI 3941-2.
Standards
The generator can be operated via a pneumatic coupling plug by compressed air or other pressurised technical inert-gases (e.g. with N2, CO2). For the purpose of a reproducible and long-term stable aerosol generation, the operational air flow is controlled via the pressure drop over the nozzle. This allows also a reproducible and stable operation of the generator even at very low air flow rates and thus also at lowest particle production rates.
Benefits
- stable aerosol generation even at low flow rates
- low noise operation via compressed air or other technical inert-gases (e.g.: nitrogen, carbon dioxide)
- safe and reproducible adjustment of operating points
- remote control via serial interface (optional)
Applications
- aerosol generation from pure liquids, solutions and suspensions
- fractional efficiency testing of filter media and filter elements
- generation of long-term stable test and process aerosols
- calibration and validation of particle measurement techniques
Accessories
- interface cable
- aerosol substance (DEHS, PAO, PSL)
- diffusion dryer (DDU 570/L, DDU 570/H)
| Parameter title | Unit | Value |
|---|---|---|
| setting parameter | - | differential nozzle pressure |
| setting range | hPa | 0 ... 6000 |
| setting resolution | hPa | 1 |
| aerosol, volumetric flow rate | L/h | 50 ... 250 |
| aerosol, mass flow rate (aerosol substance) | g/h | max. 2,0 |
| aerosol, particle production rate | #/s | 4,0 × 10⁰⁶ ... 1,4 × 10¹⁰ |
| aerosol, particle size range | µm | 0,01 ... 2 |
| aerosol, distribution width (geometric standard deviation) | - | 1,8 ... 2,2 (polydispers) |
| power supply | - | 12 V DC; 0,5 A |
| operating medium, gas/air | - | particle free, dry compressed air or pressurised inert gas |
| operating medium, gas/air - compressed air supply | kPa | max. 800 |
| operating medium, aerosol substance | - | pure liquids (DEHS, PAO, paraffine oil, ...), solutions (NaCl, KCl, ...), suspensions (PSL, A1) |
| operating medium, aerosol substance - filling volume | mL | 10 ... 80 |
| environmental condition, max. counterpressure | kPa | 20 |
| environmental condition, temperature | °C | 0 ... 50 |
| hose connector, outlet | mm | Ø 8 (outer diameter) |
| dimensions (w × h × d) | mm | 300 × 120 × 195 |
| weight | kg | 3,0 |
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