Optical Analysis

Optical Analysis

Optical analysis applies light-based measurement to identify and quantify chemical composition and physical properties in solids, liquids, slurries, particles, and gases. Endress+Hauser describes a comprehensive portfolio of atomic and molecular analysis tools spanning laboratory, process, and emissions monitoring, aimed at real-time quality and emissions visibility where conventional sampling is slow or impractical.

The technology set includes both extractive and in-situ approaches, with key methods such as tunable diode laser absorption spectroscopy (TDLAS), quenched fluorescence (QF), Raman spectroscopy, NIR, IR, UV/Vis, and atomic absorption. Product groupings include TDLAS/QF analyzers, Raman spectroscopic systems, emission monitoring solutions, particle measuring devices, digital analyzer solutions, process gas analyzers, air quality devices, smoke detectors, visual range measurement, and overheight detection.

Benefits come from faster analytical feedback—often seconds to minutes—enabling tighter control, reduced downtime, and better cost management. Endress+Hauser also emphasizes non-invasive, hands-free measurement (where inline optics are applicable), improved plant availability through maintainable systems, and compliance-driven monitoring of gas concentrations for targeted emissions control.

Typical applications include combustion optimization, flare and fuel gas characterization, acid-gas and sulfur-species monitoring, emissions compliance for stacks, and quality measurements in chemical production where composition drives yield. Raman and NIR approaches are commonly applied to mixture identification and concentration tracking, while TDLAS/QF solutions fit fast, selective gas measurements in challenging or hazardous environments. Particle and opacity-related measurements support filtration performance, dust control, and workplace or environmental monitoring.

Implementation requires matching optical method to the matrix, interferences, required selectivity, and maintenance constraints. Extractive systems demand attention to sample conditioning, transport lag, and representativeness; in-situ systems demand optical access management, purge strategies, and alignment stability. Data handling—calibration management, validation, and integration to reporting or control—should be defined upfront to ensure optical measurements translate into actionable process and compliance outcomes.

Instrumentation and Controls., an exclusive authorized representative of sales and service for Endress+Hauser.