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Rapid Analysis in Process

Optical spectroscopy is one of the most versatile tools in modern process analytical technologies. Samples to be analysed emit material-specific radiation after interaction with light, from which the chemical composition of the samples is determined. For solid materials, morphological parameters such as grain size or surface roughness can be determined as well.

Our dedicated industrial spectrometers provide high-speed analysis of ingredients and can be used for qualitative analysis such as variety identification as well as for the quantitative determination of intermediate and finished products directly in the process.

 

System Concepts for Industrial Use

Advantages of spectroscopic methods:

  • High measurement rates at short integration times
  • Non-invasive and non-destructive
  • Universally applicable for solid, liquid, or gaseous samples

Especially for process analytical applications in an industrial environment, the performance of optical spectroscopy is highly advantageous:

  • 100% monitoring of product flows
  • Non-contactless analysis, directly integrated into the process line
  • Fully automated online or inline process control or monitoring

 

Both embedded and PC-based versions offer two alternative system approaches covering the state of the art in process-enabled industrial spectroscopy in the best possible way:

  • The embedded line allows the realization of process sensors offering all advantages of a real-time smart sensor system due to fully low-level system control and data processing
  • The PC-based version with its comprehensive software packages offer a high degree of versatility and flexibility in the implementation of online or at-line routine analyses

Dedicated to industrial applications, all our systems are designed to be low-maintenance and robust against harsh or aggressive environments.

Methods of Process Spectroscopy

Depending on the application and the detailed requirement specifications, we provide the appropriate spectroscopic method:

UV-VIS 180 – 1100 nm

Detection of electronic transitions

Spectra in the UV range with its easily assignable absorption lines offer a selective, molecule-specific detection of the substances under examination. Due to our low-scattered light and solarization-resistant systems, Deep UV applications are possible as well. In addition, the visible range provides highly resolved colour information.

NIR 850 – 2500 nm

Vibrational spectroscopy (overtones and combinational bands)

Almost any organic substance displays distinct vibrational spectra, making NIR spectroscopy one of the most versatile and widely used methods in ingredient analysis, including the quantitative determination of chemical compositions as well as qualitative analysis such as variety identification. The NIR wavelength range is also suitable for coating thickness measurements in the µm range.

Raman 785 nm (Excitation)

Inelastic scattering

Raman spectra, with their characteristic fingerprint signatures, allow a highly specific detection of a wide variety of molecules. Thus, substance-specific quantifications are also easily accessible due to significant peak characteristics. Raman spectroscopy is particularly suitable for measurements in aqueous solutions, as water itself does not show any predominant component in the spectrum.

LIBS (Laser Induced Breakdown Spectroscopy) 190 – 960 nm

Spectroscopic detection of plasma emissions

By means of short laser pulses, a microplasma is generated on the sample surface, the emission of which can be spectroscopically evaluated during recombination (breakdown). LIBS spectra thus show discrete emission lines of the individual elements present in the sample, thus making measurement tasks accessible which cannot be solved with the classical methods of electronic or vibrational spectroscopy.

Our team of application engineers would be pleased to support you in selecting the most suitable method for you.

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