Agilent Oil Analyzer: customizing analysis methods

Significance of the Topic

Used oil analysis by FTIR offers rapid, cost-effective monitoring of lubricant condition by detecting multiple degradation markers in one run. It supports predictive maintenance programs and reduces dependency on labor-intensive wet chemical tests.

Study Objectives and Overview

This application note outlines the customization of analysis routines in the Agilent FTIR Oil Analyzer to comply with military and commercial standards, notably the JOAP protocol and ASTM E2412–04. It explains how to adapt existing methods or build new ones to track oil health indicators.

Methodology and Instrumentation

Methods rely on mid-IR absorption trends using both direct and differential (spectral subtraction) approaches. Calibration models (univariate and multivariate) are developed and validated against reference samples covering expected analyte ranges. The Resolutions/Resolutions Pro and PLSplus IQ software facilitate univariate, PCR, and PLS calibrations. The standard workflow involves transferring .BSQ or .CAL files to the Analyzer’s Methods directory and editing protocols in the Method Editor.

Used Instrumentation

FTIR spectrometer configured for oil analysis, Agilent Oil Analyzer software, Resolutions/Resolutions Pro, Galactic GRAMS/AI with PLSplus IQ module.

Main Results and Discussion

Twelve predefined methods measure thirteen key parameters such as water, soot, oxidation, nitration, fuel dilution, and base number trends. Custom calibrations ensure accuracy across diverse lubricant types, while spectral subtraction options enhance selectivity when required.

Benefits and Practical Applications

• Simultaneous multi-parameter results from single spectra
• Accelerated throughput and reduced reagent costs
• On-site deployability for remote monitoring
• Flexible method adaptation for new fluids

Future Trends and Opportunities

Integration of advanced chemometric models will improve detection limits and robustness. Expanding calibration libraries to cover emerging synthetic oils and biodegradable lubricants will enhance predictive maintenance. Real-time edge computing and cloud connectivity can drive automated condition monitoring networks.

Conclusion

Customizable FTIR analysis using the Agilent Oil Analyzer provides a powerful tool for reliable, rapid oil health assessment, meeting stringent standards for military and industrial applications.

Reference

1. Toms LA. Machinery Oil Analysis. Coastal Skills Training; 1998.
2. Toms AM. FTIR for the Joint Oil Analysis Program. In: JOAP-TSC International Condition Monitoring Conference; 1994.
3. ASTM E2412–04.