Lehrstuhl für Mechanische Verfahrenstechnik (MVT)

Sensor Development

A research focus of the Institute of Particle Process Engineering of the University of Kaiserslautern is the development of methods for particle concentration, size (mean- and distribution) and velocity measurement with DES- (Dynamic Extinction Spectroscopy). A extinction measurement setup which combines dynamic (statistical) and spectral evaluation methods. The 3D LSS (Light Scattering Sensor) developed at our institute represents another unique sensor setup to measure the sphericity of single particles by interpreting intensity profiles of defined scattering and azimuth angles. A main research aspect is the inline implementation of the measurement method in industrial relevant applications. To successfully accomplish new sensors for specific particle systems, the experimental and simulative experience of more than 10 years is gathered. It was conducted under the direction of Prof. Ripperger and will continue under his successor, Prof. Antonyuk.
Our research verified the SE-Method as suitable for particle system from 1µm to about 3mm and up to 30 vol% concentration to deliver reliable and reproduceable measurements in sprays, emulsions and suspensions.
The future research will be focused on the application of the DES setup for particle sizes starting at 1nm.


Sensort Typeparticle Sizeparticle concentrationmeasurandApplication
3D LSS (Light Scattering Sensor)

0,1 µm -

5 µm

Up to 107 particles/cm3sphericityCarbon black, PM2.5, various aerosols
Spectral Extincton

30 nm -

1 µm

ppm up to 30 Vol%mean particle diameter, concentrationprecipitation reactions, colloidal dispersion measurement
Statistical Extinction

1 µm -

1 mm

ppm up to 30 Vol%Mean particle diameter, concentration, velocityspray and emulsion characterization

Research areas


Research Projects

Completed Research Projects

Recent Publications (2018 - 2021):

  • Schwarz, Nico: Messfähigkeit der Statistischen Extinktionsmethode zur Inline-Messung der Partikelgröße, der Partikelkonzentration und der Partikelgeschwindigkeit; Universität Kaiserslautern 2019; ISBN 978-3-95974-109-5
  • Schwarz, Nico; Ripperger, Siegfried; Antonyuk, Sergiy: Investigations on the Capability of the Statistical Extinction Method for the Determination of Mean Particle Sizes in Concentrated Particle Systems. Particle & Particle Systems Characterization 35 (2018) 9, 1800191
  • Frank Babick, Lars Hillemann, Michael Stintz, Tim Dillenburger, Michael Pitz, Albert Hellmann, Sergiy Antonyuk, Siegfried Ripperger, Franz J. T. Huber, Stefan Will, Ruth Wernet, Martin Seipenbusch, Manuel Gensch, Alfred Weber, Dennis Kiesler,Einar Kruis, Rainer Friehmelt, and Bernd Sachweh: Multiparameter Characterization of Aerosols. Chemie Ingenieur Technik 90 (2018) 7, 923-936, https://doi.org/10.1002/cite.201700094
  • Michael Pitz, Albert Hellmann, Siegfried Ripperger, Sergiy Antonyuk: Development of a 3D Light Scattering Sensor for Online Characterization of Aerosol Particles. Particle & Particle Systems Characterization 35 (2018) 1800045

Completed Dissertations

  • Schwarz, N.: Messfähigkeit der Statistischen Extinktionsmethode zur Inline-Messung der Partikelgröße, der Partikelkonzentration und der Partikelgeschwindigkeit, Dissertation, TU Kaiserslautern, 2019.
  • Dannigkeit, F.: Statistische Extinktionsmethoden zum Inline-Monitoring von Partikelprozessen, Dissertation, TU Kaiserslautern, 2015.
  • Steinke, L.: Messverfahren zum Monitoring von Fällungsprozessen sowie Untersuchung eines neuen Verfahrens zur CaCO3-Fällung, Dissertation, TU Kaiserslautern, 2013.

Laboratory Equipment (selected)

3D Light Scattering Sensor

Online Characterization of Aerosol Particles

Statistical Extinction Sensor

Measurement of Concentration, velocity and size of particles

High speed cameras

Measurement of particle / droplet trajectories

Particle size measurement from 1 nm to 3 mm

static light scattering (Horiba LA 950, Retsch)

dynamic light scattering (Zetasizer Nano ZS, Malvern)

particle counter (Abakus, Markus Klotz GmbH)

containment sensors (Hydac)

Particle property measurement

Measurement of bulk porosity (Ultra-Pycnometer Model 1000T, Quantachrome)

Measurement of the inner surface from porous media (BET-Analysis Model Nova 200e, Quantachrome))

Measurement of the zeta-potential (Zetasizer Nano ZS, Malvern & PCD-05, Mütek)

Simulation Tools:

  • CFD Simulation
  • Matlab
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