ASTM E2412 PDF
placed in context of the recently approved ASTM Practice E alternative means of executing this ASTM Practice, its objective being to minimize . E – Download as PDF File .pdf), Text File .txt) or read online. Referenced Documents ASTM Standards:3 D Test Method for Kinematic Viscosity. improper air/fuel ratio. There are test methods for laboratory grade FTIR measurement as well as for portable field testing. ASTM E describes the standard.
|Published (Last):||21 April 2012|
|PDF File Size:||11.70 Mb|
|ePub File Size:||12.40 Mb|
|Price:||Free* [*Free Regsitration Required]|
Nitration Testing Equipment used by us in our Laboratory. Correlation of FT-IR measurements to physical values is not necessary. Since no single product is formed, standard materials are not available to generate the calibration curves needed to relate absorbance to concentration. As data becomes available, other lubricant types can be added to the annex. The information for these components is most useful in trend analysis. In 6 E — 10 increases as the lubricant breaks down.
For results where the value decreases with time, the limits would be the average minus the corresponding number of standard deviations. Through normal blow-by, when nitrogen oxide products enter the lubricant, the react with the moisture and become acidic in nature and rapidly accelerate the oxidation rate of e24112 oil.
E – Free Download PDF
The following are provided only as an example. The calibrations prepared for diesel fuel and gasoline may not accurately reflect the fuels in use in particular regions of the world. As this area is closely associated with the water measurement area, a localized, single—point baseline at cm-1 provides a correction for low levels of water buildup Fig.
A peak area over this range is used as is depicted in Fig. Water standards should be freshly prepared and analyzed. Alternate source, beamsplitter and detector combinations covering this range are commercially available but have not been investigated for use in this practice.
ASTM E – standard practice for Condition Monitoring of Used Lubricants by FT-IR Spectrometry.
It is the change in base oil aromatic content that is the major awtm leading to errors from reference e212. As with fuel, the presence of glycol can be confirmed by gas chromatography or a colorimetric test, or more commonly, corroborated using elemental analysis results for sodium and boron.
While calibration to generate physical concentration units may be possible, it is unnecessary or impractical in many cases. However, typical gearboxes and hydraulic systems will not contain particulate levels high enough to cause a significant baseline offset and tilt.
Consistent analyses should be applied for each application. Spectral characteristics of noted fuels have been found to vary.
Various additive packages, such as detergents, dispersants, antioxidants, overbase additives, etc. This fact makes it difficult to directly assess or calibrate the quantity of soot, so factors that relate the amount of soot to the infrared absorbance value must be established with the engines and lubricants of interest.
Alternatively, some labs measure the absorbance of the peak closest to cm-1 relative to a single-point baseline at cm This practice is designed for monitoring in-service lubricants and can aid in the determination of general machinery health and is not designed for the analysis of lubricant composition, lubricant performance satm additive package formulations.
E — 10 Standard Practice for Condition Monitoring of In-Service Lubricants by Trend Analysis Using Fourier Transform Infrared FT-IR Spectrometry1 This standard is issued under the fixed designation E; the sstm immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.
The abscissa of the plot is the test data result, and the ordinate is the frequency at which a specific result occurs in the test population.
The population should include a minimum of several hundred results for meaningful asym analysis. Alternatively, if failure modes are underrepresented, the distribution may be narrow, and the calculated limits may be too low. Level Zero and Level One Tests.
Spectral characteristics of diesel and other noted fuels have been found xstm vary. The breakdown II region is also highlighted in Fig. Spectral characteristics of glycol contamination are shown in Fig. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Height to Negative peak height Area to Area to Verification peak: However, glycol has other characteristic peaks that differentiate it from water around, and cm-1 as can be seen in Fig.