Can Raman be used for remote industrial process monitoring?

Raman is a light scattering technique, which opens up the possibility of transferring light, and indeed the Raman scattering signal through optical fibres.

In the mid 1990's the first generation of HORIBA Jobin Yvon's Raman optical fibre probes became commercially available. These utilize optical fibres to transmit the laser onto the sample and transmitting the generated Raman scattering back to the spectrometer and detection system.

The current generation of Raman probes can be used for remote sampling hundreds of meters away from the base analyzer. They can be used with high temperatures and pressures and even placed within reactors and manufacturing plants.

One of the earliest industrial uses of Raman monitoring was in the ParaXylene separation process, and systems such as the ELUXYL Raman analyzer evolved.

Raman can be used for:

  • Solutions/ reaction mixes
  • Emulsions
  • Slurry and suspensions
  • Headspace in vials/reactors
  • Raw and bulk material feeds
  • Vessel cleaning effluents