Differential Mobility Analyzer (DMA)
A DMA sizes nanoparticles by their mobility in an electric field. Negatively charged particles are attracted by a positive electrode and for a given voltage, only particles of a certain mobility pass through the DMA via an exit slit in the positive electrode. These particles are then counted by a CPC or FCE. By stepping through the voltage from 10,000V to 5V a particle size distribution is obtained.
The DMA can also be used to generate monodisperse aerosols if operated with a fixed voltage.
- Particle clasification in range 0,9 - 1100 nm
- Integrated temperature and pressure sensors
- Up to 255 channels depending on different particles mobility
GRIMM DMAs feature the Vienna-Type design (Reischl et al. 1997, Winkelmayr et al. 1990), well known for highest resolution and lowest diffusional losses even for small particles. Vienna-Type DMA offers flexible design with two electrodes of different length to
accommodate a variety of experimental needs.
Condensation Particle Counter (CPC)
- Mobile or stacionary
- Compact and robust design
- Fully automated use with own software
- Integrated Butanol tank, Butanol safety features (anti-spill, odor removal)
- Sampling with 1 Hz
- Integrated battery (for 5 hours), car adapter
- Self-test upon start-up assures highest reliability
- Particle Size Range 4.5 nm (D50, verified with Tungsten oxide) to greater than 3 μm
- Particle Concentration Range 0 to 20,000 particles/ccm (single particle counting with coincidence correction), to 10.E7 particles/cm3 with photometric mode
Applications:
- Mobile aerosol studies
- Work place monitoring
- Roadside monitoring
- Environmental & climatic studies
- Fundamental aerosol research
- Filter testing
- Nanotechnology process monitoring
- Inhalation & exposure studies
- Health effect studies
Faraday Cup Electrometer (FCE)
Nanoparticles are collected on a filter in a
Faraday Cup. The particles deposit their
charge on the filter and initiate a small current
that is converted to a voltage using a
high impedance resistor. This is an absolute
and fast method to detect nanoparticles.
- No consumables are necessary
- No calibration or chemical addition
Scanning Mobility Particle Sizer (SMPS+C)
Size distributions of airborne nano- to micrometer particles with high sensitivity and resolution.
SMPS+C = CPC + DMA + Software
Both components (CPC and DMA) are carefully manufactured and calibrated, and thoroughly tested within our TQM for superior quality so that you can rely on the data that you obtain with them.
For the detection we offer two assorted product lines of CPCs, optimized either for stationary
or mobile use and described in detail on separate data sheets.
Highlights:
- Size distributions from 5 to 1110 nm
- Concentrations of 1 to 10.E7/ccm
- Two Vienna type DMAs
- Rugged and reliable
- Butanol safety features (anti-spill, odor removal)
- Fully automated use with GRIMM software
- Analog inputs for climatic sensors
- Self-test upon start-up assures highest reliability
Aplications:
- Fundamental aerosol research
- Inhalation & exposure studies
- Environmental & climatic studies
- Studies on NP growth, coagulation & transport
- Filter testing
- Engine exhaust studies
- Mobile aerosol studies
- Workplace monitoring
Scanning Mobility Particle Sizer with FCE (SMPS+E)
The reliable reference in the field of nanoparticle counting and sizing
SMPS+E = DMA + DMA-Controller + FCE + Software
- counter and sizer for nanoparticles in the size range of 0.8 nm to 1100 nm in a wide range of concentrations (100 to 10.E8 particles/ccm)
- Sampling with up to 8 Hz
- Very low noise level
- Rinse air flow for fastest response time
- Three different DMAs available for maximum flexibility
- Compact and rugged
- Operates without any consumables
- Fully automated use with our software
- Three analog inputs
- Self-test upon start-up assures highest reliability
Aplications:
- Fundamental aerosol research
- Studies on atmospheric nucleation
- Size distributions of airborne ion clusters
- Macromolecule studies
- Nanotechnology process monitoring
- Combustion studies
- Official reference for calibration of CPCs
Wide Range Aerosol Spectrometer (WRAS)
WRAS = SMPS+C + OPC + Software + 19“ rack (for outdoor use)
- SMPS+C upgraded with optical particle counter (OPC 1.107, 1.107, 1.109 or 1.190), all portable (indoor measurement)
- WRAS provide highly accurate measurements for nano particles as small as 4.5 nm up to 32µm over a wide concentration range of up to 107 particles/ccm
- 19” rack versions of CPC, SMPS+C, and WRAS are also available for stationary installations, typically used in environmental networks, atmospheric monitoring
stations, and automotive test riggs
Fast Aerosol Particle Emission Spectrometer (FAPES)
Model 5.600, the system includes:
- 10 DMA/FCE
- complete flow system
- sample flow recovery/conditioning system
- sampling and heated dilution system (<500 º C; 0.1 to 1.3 bar)
- Software - FAPES software is user friendly but full-featured. It includes a complete data inversion algorithm and allows data to be displayed and exported
in many different ways to meet a variety of needs. The software collects data with 10x per second and can display averaged data with 0.5 to 60 seconds averages.
Specifications:
- Particle size range 6 nm to 500 nm
- Particle size resolution 21 channels
- Time resolution 10 Hz
Application:
The FAPES (#5.600) covers a wide range from standard test measurements to fundamental research from high concentrations in engine exhaust to normal ennvironmental conditions, from dynamic
behaviour in combustion processes to dynamic processes during nucleation events even in different temperatures, pressure levels or altitudes.