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Gérard DALLEMAGNE: Engineer, Materials Department EADS Joint Research Center
INTRODUCTION
The quality of a hydraulic fluid depends on many factors, the influence of which has been studied in the article . The purpose of this article is to present the various hydraulic fluid analysis methods used to determine all these factors.
Many methods are standardized. Of those presented in this text, only some will remain valid in the future. Others will have to be replaced by new techniques.
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Hydraulic fluids
Density and density
References
Standardization. Specifications
Association française de normalisation AFNOR
http://www. boutique.afnor.fr/
- Hydraulic transmissions – Fluids – Measurement of mineral oil filterability. Classification number : E48-690 - NF E 48-690 - 12-90
- Liquid petroleum products – Vapour pressure – Part 2: Determination of absolute vapour pressure (AVP)...
Hydraulic fluid analysis methods
Table 1 shows the equivalences between the various standards recommended by European and American standards bodies.
The numbers in the table refer to the comments below.
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