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Built under a patented UOP design, the COSA/Xentaur Continuous Hydrogen Analyzer (CHA) provides petroleum refiners, petrochemical producers, and electric power generators a means to continuously and accurately monitor hydrogen concentration in gaseous streams. With its unique electrochemical sensor, the CHA outputs a continuous signal corresponding directly to the hydrogen concentration. Used in conjunction with real-time controls, alarms, and shut-off mechanisms, this instrument responds immediately to changing hydrogen levels for improved operations and safety. Hydrogen concentrations are critical in many different refining, petrochemical, and electric power generation applications whether being monitored as a reactant, product, process "health" indicator, or coolant. COSA / Xentaur configure the Continuous Hydrogen Analyzer to match each installation's unique sample conditioning and operational needs.