Description / Abstract:
This SAE Aerospace Recommended Practice (ARP) provides
procedures for assuring cleanliness of sampling equipment, for
performing the sampling process, and for measuring and reporting
the sample particle count.
The ARP gives procedures for cleaning sample bottles, when used,
and recommends the solvents to be applied and how these solvents
should be prepared.
Requirements for the selection of the sampling point, sampling
method, and sampling frequency are also specified.
This ARP also recommends three measuring methods for determining
the level of solid particle contamination of hydraulic fluids used
in aerospace hydraulics. These are:
a. on-line automatic particle counting;
b. automatic particle counting method using bottle samples;
c. microscopic particle count method using bottle samples.