Optical Analysis

Optical Analysis

Optical analysis refers to measurement technologies that use light–matter interactions to determine chemical composition and related quality attributes. Techniques such as spectroscopy and chromatography provide molecular or atomic “fingerprints” that can be used for identification, concentration trending, and impurity detection. In industrial environments, optical analysis extends the control layer beyond bulk variables by directly quantifying what is in a stream, in near real time.

The category spans laboratory, process, and emissions monitoring systems built around atomic and molecular analysis. Endress+Hauser’s optical analysis offerings emphasize robust Raman and tunable diode laser absorption spectroscopy (TDLAS) solutions for composition measurement in process and manufacturing environments, supported by a broader set of analyzers for quality and emissions monitoring. 

Key benefits come from process transparency and speed. Measurements produced in seconds or minutes enable faster corrective action, minimizing downtime and avoiding off-spec production. Real-time composition data supports tighter control of reaction endpoints, blending ratios, and separation performance, while also improving reliability in quality assurance and emissions compliance programs. 

Instrumentation choices are typically driven by the matrix, required response time, and the practicality of sample handling. TDLAS analyzers are often selected for targeted gas species because they can deliver selective measurement while avoiding interferences common to traditional infrared methods, with low routine maintenance and limited recalibration needs. Gas chromatographs are used where detailed component breakdown and energy content calculations are required, including custody-transfer service and BTU determination.

Typical applications include natural-gas quality and hydrogen-blend monitoring, moisture and acid-gas measurement, refinery and petrochemical process control, and emissions monitoring in power and industrial combustion. Optical analysis is also applied where identification and trace impurity trends protect catalysts, ensure product consistency, and support safety interlocks. Selection balances analyte list, detection limits, response time, sample-conditioning complexity, hazardous-area classification, and maintenance strategy.

Engineered Equipment Company, a leading supplier of specialized industrial equipment.