Device and method for measuring hydroxyl content in hydrocarbon fuel

Abstract

A device for measuring hydroxyl-containing compounds in hydrocarbon samples combines near-infrared (NIR) spectroscopy and electrochemical impedance (EI) spectroscopy to accurately identify and quantify compounds like ethanol, methanol, and water. The portable device includes a sample inlet, NIR spectrometer for compound identification, EI spectrometer for compound differentiation, and a controller that processes signals to determine presence and amounts of hydroxyl-containing compounds. The device incorporates temperature control, a custom syringe pump system, and a quartz-tungsten-halogen light source with analog feedback control. A rechargeable lithium-ion battery provides extended field operation. The controller uses machine learning algorithms to perform real-time chemometrics, achieving measurement accuracy within 0.1% by mass. The briefcase-style configuration includes polyetheretherketone fluid handling components, touch screen interface, wireless connectivity, and environmental protection rated to IP56 standards. This portable solution enables rapid on-site fuel analysis without requiring complex laboratory equipment or specialized operator training.

Dependencies are inferred from the claim text.