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This is an ASTM International Standard Test Method for condition monitoring of used lubricants. The SpectroFTIR Q400, and the SpectroAlpha Q410 meet and exceed the requirements of this specification. Copies of the complete method are available from the ASTM web site at http://www.astm.org. The full title and partial scope of the method is listed below:
ASTM E2412-04 Standard Practice for Condition Monitoring of Used Lubricants by Trend Analysis Using Fourier Transform Infrared (FT-IR) Spectrometer
- 1. Scope
- 1.1 This practice covers the use of FT-IR in monitoring additive depletion, contaminant buildup and base stock degradation in machinery lubricants, hydraulic fluids and other fluids used in normal machinery operation. Contaminants monitored include water, soot, ethylene glycol, fuels and incorrect oil. Oxidation, nitration and sulfonation of base stocks are monitored as evidence of degradation. The objective of this monitoring activity is to diagnose the operational condition of the machine based on fault conditions observed in the oil. Measurement and data interpretation parameters are presented to allow operators of different FT-IR spectrometers to compare results by employing the same techniques.
- 1.2 This practice is based on trending and distribution response analysis from mid-infrared absorption measurements. ……. Note 1 It is not the intent of this practice to establish or recommend normal, cautionary, warning or alert limits for any machinery. Such limits should be established in conjunction with advice and guidance from the machinery manufacturer and maintenance group.
- 1.3 Spectra and distribution profiles presented herein are for illustrative purposes only, and are not to be construed as representing or establishing lubricant or machinery guidelines.
- 1.4 This practice is designed as a fast, simple spectroscopic check for condition monitoring of used lubricants and can be used to assist in the determination of general machinery health through measurement of properties observable in the mid-infrared spectrum such as water, oil oxidation, and others as noted in.
Applicable Spectro Products: