Transmission Infrared Fiber Optic Probe for Gases

Main features:

  • On-line transmission spectroscopy in gases
  • High throughput in any part of NIR-MIR spectra
  • Flexible and robust for industry applications
  • Compatible with any fiber spectrometer
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FlexiSpec® product line includes the latest generation of transmission infrared fiber optic probes for gases to be used with any spectrometer or photometer. The design of transmission fiber probe for gases is based on a bifurcated fiber bundle.
Due to low Mid IR-attenuation in gases the collimated beam design of double pass (or multiple pass) gas cell is needed to increase optical path length to 10-40cm.
This design is easily realized by the mean of the collimating objective and reflecting mirror cell.

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Specification of Gas transmission Fiber Optic Probes
Probe typeTransmission in double-pass gas cell
Transmission range3.2-17μm5.2-17μm1.5-6.5μm
Fiber typePIR-900/1000
Silver Halide
Silver Halide
CIR 500/550
Chalcogenide glass
Temperature range-100°C / + 140°C-100°C / + 140°C-100°C / + 90°C
Sensitivity> 1ppm depending on optical path, spectrometer performance, gases in test
Common Parameters of Gas Transmission Fiber Optic Probes
Total Length1.5m (opt: 1-30m)*
Transmission Cell Length100mm (opt: 5-200mm)
Transmission Cell Diameter25mm
Shaft MaterialStainless Steel, Hastelloy C22
Protective Tube MaterialLiquid Tight SS-Conduit, KOPEX-tube
Input/Output ConnectorsLong SMA*
*Customized dimensions are available on request
  • Reaction investigation and monitoring in real time
  • Analytical characterization
  • Exhaust gases monitoring
  • Solvent vaporization monitoring
  • Associated petroleum gas monitoring