METHODS FOR PARTICLE COUNTING IN HYDRAULIC FLUIDS.

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Abstract:

Four methods of sizing and counting particles in hydraulic fluids and lubricants were studied. The reproductibility of SAE Aeronautical Recommended Procedure No. 598 was established. Test results on three automatic particle counters the Cintel Flying Spot Resolver, the Coulter Counter, and the HIAC Particle Counter were evaluated against the ARP No. 598. Instrument theory and test methods are described. Design and construction of a simple but effective dustless area are given. Two of the automatic counters were found to give counts well within the prescribed precision 33 of the ARP No. 598. Numerical differences in counts on the same sample are attributable to the measurement of different physical properties by the various methods. Correlations between counts were made. Precision of the HIAC Counter was established, with standard deviations of 4.1 for the total count. 3.3 in the 6-15 micron range, and 11.2 in the 16-25 micron range. Author

Author(s):
Anduze, Richard A. ; Harris, Jay C.
Author Organization(s):
MONSANTO RESEARCH CORP DAYTON OHIO
Descriptive Note:
Rept. for Sep 61-Nov 63,
Annotation:
Methods for particle counting in hydraulic fluids.
Pagination:
0066

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFML-TDR64 72
Contract/Grant Number(s):
AF33 616 8483
Task Number(s):
738103
Project Number(s):
AF-7381
Monitor Series:
TDR64 72
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*HYDRAULIC FLUIDS, IMPURITIES), (*COUNTING METHODS, PARTICLES), LUBRICANTS, CONTAMINATION, PARTICLE SIZE, CORRELATION TECHNIQUES, STANDARDS, CONTROLLED ATMOSPHERES
Report Date:
1964 May 01