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About This Item
Full Description
1.1''These practices are to be used for the recording and interpretation of infrared absorption spectra of electrical insulating oils from 4000 cm'''1 to 400 cm'''1 (2.5 ''m to 25 ''m).
Note 1:''While these practices are specific to ratio recording or optical null double-beam dispersive spectrophotometers, single-beam and HATR (horizontal attenuated total reflectance), Fourier-transform rapid scan infrared spectrophotometers may also be used. By computerized subtraction techniques, ratio methods can be used. Any of these types of equipment may be suitable if they comply with the specifications described in Practice E932.
1.2''Two practices are covered, a Reference Standard Practice and a Differential Practice.
1.3''These practices are designed primarily for use as rapid continuity tests for identifying a shipment of oil from a supplier by comparing its spectrum with that obtained from previous shipments, or with the sample on which approval tests were made. They also may be used for the detection of certain types of contamination in oils, and for the identification of oils in storage or service, by comparison of the spectra of the unknown and known oils. The practices are not intended for the determination of the various constituents of an oil.
1.4''Warning'''Infrared absorption is a tool of high resolving power. Conclusions as to continuity of oil quality should not be drawn until sufficient data have been accumulated so that the shipment-to-shipment variation is clearly established, for example.
1.5''The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6''This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.7''This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Document History
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ASTM D2144-07(2021)
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Standard Practices for Examination of Electrical Insulating Oils by Infrared Absorption- Most Recent
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ASTM D2144-07(2013)
Standard Practices for Examination of Electrical Insulating Oils by Infrared Absorption- Historical Version
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ASTM D2144-07
Standard Practices for Examination of Electrical Insulating Oils by Infrared Absorption- Historical Version
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ASTM D2144-01e1
Standard Test Methods for Examination of Electrical Insulating Oils by Infrared Absorption- Historical Version
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ASTM D2144-01
Standard Test Methods for Examination of Electrical Insulating Oils by Infrared Absorption- Historical Version
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ASTM D2144-94
Standard Test Methods for Examination of Electrical Insulating Oils by Infrared Absorption- Historical Version