ANSI-ISA-75.11.01-1985(R2002) Inherent Flow Characteristic and Rangeability of Control Valves

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E5FD58BFBDD846B787E3EE836CDF947D

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0.38

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16

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pdf

日期:

2009-5-22

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ANSI/ISA–75.11.01–1985 (R2002),Formerly ANSI/ISA–75.11–1985 (R1997),Inherent Flow Characteristic and Rangeability of Control Valves,ISBN: 1-55617-826-3,Copyright . 2002 by ISA —The Instrumentation, Systems, and Automation Society. All rights reserved.,Not for resale. Printed in the United States of America. No part of this publication may be reproduced,stored in a retrieval system, or transmitted in any form or by any means (electronic mechanical,photocopying, recording, or otherwise), without the prior written permission of the Publisher.,ISA,67 Alexander Drive,P.O. Box 12277,Research Triangle Park, North Carolina 27709,- 3- ANSI/ISA–75.11.01–1985 (R2002),Preface,This preface, as well as all footnotes and annexes, is included for information purposes and is not part of,ANSI/ISA-75.11.01-1985 (R2002).,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.,CAUTION — ISA ADHERES TO THE POLICY OF THE AMERICAN NATIONAL STANDARDS,INSTITUTE WITH REGARD TO PATENTS. IF ISA IS INFORMED OF AN EXISTING PATENT THAT IS,REQUIRED FOR USE OF THE DOCUMENT, IT WILL REQUIRE THE OWNER OF THE PATENT TO,EITHER GRANT A ROYALTY-FREE LICENSE FOR USE OF THE PATENT BY USERS COMPLYING,WITH THE DOCUMENT OR A LICENSE ON REASONABLE TERMS AND CONDITIONS THAT ARE,FREE FROM UNFAIR DISCRIMINATION.,EVEN IF ISA IS UNAWARE OF ANY PATENT COVERING THIS DOCUMENT, THE USER IS,CAUTIONED THAT IMPLEMENTATION OF THE DOCUMENT MAY REQUIRE USE OF TECHNIQUES,PROCESSES, OR MATERIALS COVERED BY PATENT RIGHTS. ISA TAKES NO POSITION ON THE,EXISTENCE OR VALIDITY OF ANY PATENT RIGHTS THAT MAY BE INVOLVED IN IMPLEMENTING,THE DOCUMENT. ISA IS NOT RESPONSIBLE FOR IDENTIFYING ALL PATENTS THAT MAY,REQUIRE A LICENSE BEFORE IMPLEMENTATION OF THE DOCUMENT OR FOR INVESTIGATING,THE VALIDITY OR SCOPE OF ANY PATENTS BROUGHT TO ITS ATTENTION. THE USER SHOULD,CAREFULLY INVESTIGATE RELEVANT PATENTS BEFORE USING THE DOCUMENT FOR THE,USER’S INTENDED APPLICATION.,HOWEVER, ISA ASKS THAT ANYONE REVIEWING THIS DOCUMENT WHO IS AWARE OF ANY,PATENTS THAT MAY IMPACT IMPLEMENTATION OF THE DOCUMENT NOTIFY THE ISA,STANDARDS AND PRACTICES DEPARTMENT OF THE PATENT AND ITS OWNER.,ADDITIONALLY, THE USE OF THIS DOCUMENT MAY INVOLVE HAZARDOUS MATERIALS,OPERATIONS OR EQUIPMENT. THE DOCUMENT CANNOT ANTICIPATE ALL POSSIBLE,APPLICATIONS OR ADDRESS ALL POSSIBLE SAFETY ISSUES ASSOCIATED WITH USE IN,ANSI/ISA–75.11.01–1985 (R2002) - 4-,HAZARDOUS CONDITIONS. THE USER OF THIS DOCUMENT MUST EXERCISE SOUND,PROFESSIONAL JUDGMENT CONCERNING ITS USE AND APPLICABILITY UNDER THE USER’S,PARTICULAR CIRCUMSTANCES. THE USER MUST ALSO CONSIDER THE APPLICABILITY OF,ANY GOVERNMENTAL REGULATORY LIMITATIONS AND ESTABLISHED SAFETY AND HEALTH,PRACTICES BEFORE IMPLEMENTING THIS DOCUMENT.,THE USER OF THIS DOCUMENT SHOULD BE AWARE THAT THIS DOCUMENT MA……

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