Description / Abstract:
This SAE Recommended Practice has been formulated to advance and
endorse the use of the ISO (International Organization for
Standardization) Solid Contaminant Code as the universal means for
expressing the level of particulate contaminant in hydraulic fluid
and for specifying acceptable limits of cleanliness. Worldwide
approval was gained for this coding system because it provides a
simple, unmistakable, meaningful, and consistent means of
communication between suppliers and users. The code applies to all
types of hydraulic (liquid) fluids used in fluid power and control
systems as applied to self-propelled machines as referenced in
J1116.
Purpose - The purpose of this recommended
practice is to provide a practical and uniform method for
graphically representing the contamination level of a fluid and
assigning its proper ISO Cleanliness Code. Although the approval
code is explicit and offers no opportunity for misinterpretation,
flexibility in application is provided to satisfy the customs of
the cooperating nations. This recommended practice is intended to
facilitate the use of the ISO code and encourage its promulgation
throughout the industry.