— 3 — ANSI/ISA–88.00.02–2001
Preface
This preface, as well as all footnotes and annexes, is included for information purposes and is not part of
ANSI/ISA-88.00.02-2001.
The standards referenced within this document may contain provisions that, through reference in this text,
constitute requirements of this document. At the time of publication, the editions indicated were valid. All
standards are subject to revision, and parties to agreements based on this document are encouraged to
investigate the possibility of applying the most recent editions of the standards indicated within this
document. Members of IEC and ISO maintain registers of currently valid International Standards. ANSI
maintain registers of currently valid U.S. National Standards.
This document has been prepared as part of the service of ISA–The Instrumentation, Systems, and
Automation Society, toward a goal of uniformity in the field of instrumentation. To be of real value, this
document should not be static, but should be subject to periodic review. Toward this end, the Society
welcomes all comments and criticisms and asks that they be addressed to the Secretary, Standards and
Practices Board; ISA; 67 Alexander Drive; P. O. Box 12277; Research Triangle Park, NC 27709;
Telephone (919) 549-8411; Fax (919) 549-8288; E-mail: standards@isa.org.
The ISA Standards and Practices Department is aware of the growing need for attention to the metric
system of units in general, and the International System of Units (SI) in particular, in the preparation of
instrumentation standards. The Department is further aware of the benefits to USA users of ISA standards
of incorporating suitable references to the SI (and the metric system) in their business and professional
dealings with other countries. Toward this end, this Department will endeavor to introduce SI-acceptable
metric units in all new and revised standards, recommended practices, and technical reports to the
greatest extent possible.
Standard for Use of the International System of Units (SI): The Modern Metric
System
, published by the American Society for Testing & Materials as IEEE/ASTM SI 10-97, and future
revisions, will be the reference guide for definitions, symbols, abbreviations, and conversion factors.
It is the policy of ISA to encourage and welcome the participation of all concerned individuals and interests
in the development of ISA standards, recommended practices, and technical reports. Participation in the
ISA standards-making process by an individual in no way constitutes endorsement by the employer of that
individual, of ISA, or of any of the standards, recommended practices, and technical reports that ISA
develops.
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EITHER GRANT A ROYALTY-FREE LICENSE FOR USE OF THE PATENT BY USERS COMPLYING
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FREE FROM UNFAIR DISCRIMINATION.
EVEN IF ISA IS UNAWARE OF ANY PATENT COVERING THIS STANDARD, THE USER IS
CAUTIONED THAT IMPLEMENTATION OF THE STANDARD MAY REQUIRE USE OF TECHNIQUES,
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EXISTENCE OR VALIDITY OF ANY PATENT RIGHTS THAT MAY BE INVOLVED IN IMPLEMENTING
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