Description / Abstract:
Over the years during which fluid filtration systems have been
developing, many terms have come into use for descriptions of
characteristics of filter media, filter assemblies, test methods,
and test materials. Inevitably, some terms have been applied
loosely, so that the same term may have different meaning to
different people, or in different frames of reference.
Recognizing the need for clearly defined terms, which can have
only one meaning for all persons in all circumstances, so that
documents dealing with standard methods of evaluation of filters
will have only one interpretation, the Filter Test methods
Subcommittee of the SAE Engine Committee has compiled this Glossary
of related terms. No attempt has been made to produce an
all-inclusive document, containing definitions of all terms related
to all types of fluid filters. Instead, the Glossary is confined to
the terms likely to be encountered in relation to filters for
lubricating oil and fuels. At the same time, we have recognized
that some terms are common to all types of fluid filters, and have
been careful to avoid conflict with the definitions published by
other standardizing groups. If not identical, the definitions of
these terms are at least worded to convey an identical meaning,
hopefully in fewer, simpler or more precise words.
We hope that this effort will be effective in helping to
eliminate the ambiguities which have resulted from imprecise use of
terminology and filtration.
This Glossary is referenced in the SAE filter test methods
documents. Terms used in those documents are intended to have the
definitions shown by this Glossary, and no other.
As new terms and their definitions become associated with the
science of filtration and are relevant to the documents prepared by
this subcommittee, revisions to the Glossary will be made, either
by issuance of addenda or by revision and republication of the
entire document.