Aerosol spectrometer covering the particle size range from 5 nm … 32 μm. The weather-protected instrument is designed especially for atmospheric monitoring and combines two technologies: SMPS+C for nanoparticles and EDM 180 for micron-sized aerosol.


Functionality: Combination of mobility particle size spectrometer and optical aerosol spectrometer.



  • Particle size range from 5 nm … 32 μm
  • Fully automatic 24/7 monitoring system for up to one month of unattended operation
  • Energy-efficient, sampling with isothermal drying system
  • Fully air-conditioned mini container
  • Versatile data acquisition and communication (data logger with GSM via internet)
  • Meteorological sensors for wind speed and direction, precipitation, pressure, temperature and relative humidity



  • Mini format supersite
  • Excellent counting statistics and reproducibility
  • Change your research location easily
  • High precision with CPC and OPC at low and high concentrations
  • Low diffusion losses
  • Sampling pipe available with different lengths and sampling heads



  • Atmospheric monitoring of ultrafine particles and dust
  • Source identification
  • Traffic emission monitoring
  • Environmental and climate studies
  • Studies on atmospheric nucleation
  • Studies on nanoparticle growth, coagulation and transport


Technical Details:


Measurement principle Electrostatic classification with subsequent detection by condensational growth
Particle size range SelectableM–DMA: 5 … 350 nmL–DMA: 10 … 1,094 nm
Particle size resolution Stepping mode: 45 – 255 channelsScanning mode: 64 channels per decadeLogarithmic spacing
Minimum scan time 150 s
Max. concentration single count mode 150,000 particles/cm3
Max. concentration photometric mode 107 particles/cm3
Reproducibility > 95% for single count mode> 90% for photometric mode
Working fluid n-butanol (n-butyl alcohol)


Optical Aerosol Spectrometer

Measurement principle Light scattering at single particles; detection volume aerodynamically focused, no border zone error
Particle size range 0.25 μm … 32 μm
Number of size channels 31
Concentration range 1 … 3,000,000 particles/l
Reproducibility > 97% for single count mode
Sampling and conditioning Sampling pipe with sampling head, isothermal humidity extraction via Nafion membrane, sensorcontrolled, without loss of semi-volatile compounds (SVC)
Weather housing Stainless steel, powder-coated, air-conditioned
Climate sensors Wind speed and direction, precipitation, pressure, temperature, relative humidityGPS positioning
Total inlet flow rate 1.5 l/min, ≤ 5% difference to the nominal flow rate
Sample air flow rate SMPS+C 0.3 l/min CPC, flow control with critical orifice, temperature stabilized
Sample air flow rate EDM 180 1.2 l/min aerosol spectrometer, ±3% constant due to self-regulation
Operation Data logger and netbook integrated in housing for real-time data, meteorological sensor and GPS position
Interfaces Data logger, USB, GSM with SIM card for mobile network
Power supply 230 VAC, 60 Hz
Power consumption Max. 950 W (750 W only weather protection housing with air conditioning)
Temperature range -20 … +55 °C (-4 … 131 °F)RH < 95%
Pressure range SMPS+C: 600 … 1,100 mbar
Optical aerosol spectrometer 900 … 1,100 mbarFlow rate adjustable to pressure
Dimensions (H x W x D): Housing: 107 x 65 x 224 cm (42.1 x 25.6 x 88.2 in)
Total height with meteorological sensor 270 cm (106.3 in)
Weight 250 kg (551 lbs)