The PAT-Lx is the hazardous location version of the VIAVI PAT-L immersion process spectrometer. Safe in the presence of flammable gases, vapors, or dust, the PAT-Lx enables rapid and repeatable analysis of a wide variety of liquids, aqueous or hydrocarbon-based. The PAT-Lx integrates readily with processing equipment of all types and sizes, and delivers the performance, stability, and total cost of ownership to meet the stringent requirements of scalable manufacturing.


  • Non-destructive, real-time NIR liquid analysis for hazardous locations
  • Safe in the presence of flammable gases, vapors, fibers, or dust ATEX, NEC, and IECEx certified
  • Maintenance-free with no moving parts for low total cost of ownership
  • Rapid data acquisition up to 3 spectra per second for fast-moving processes
  • Robust, reliable, repeatable
  • Washable, IP65 and IP67 rated


  • Chemical Manufacturing Polyols and hydroxyls
  • Water content
  • Density, viscosity
  • Blend homogeneity
  • Solvent recovery
  • Food Production Frying oil degradation
  • Sugar concentration
  • Pharmaceutical Manufacturing Solvent recovery
  • API crystallization