1、STANDARD ISA-20.00.03-2001 Specification Forms for Process Measurement and Control Instruments Part 3: Form Requirements and Development Guidelines Approved 4 April 2001 ISA20.00.032001Specification Forms for Process Measurement and Control InstrumentsPart 3: Form Requirements and Development Guidel
2、inesISBN: 978-1-55617-755-2Copyright 2001 by ISAThe Instrumentation, Systems, and Automation Society. All rights reserved. Notfor resale. Printed in the United States of America. No part of this publication may be reproduced, stored ina retrieval system, or transmitted, in any form or by any means (
3、electronic, mechanical, photocopying,recording, or otherwise), without the prior written permission of the Publisher.ISA67 Alexander DriveP. O. Box 12277Research Triangle Park, North Carolina 27709USA 3 ISA20.00.032001PrefaceThis preface, as well as all footnotes and annexes, is included for informa
4、tion purposes and is not part ofISA20.00.032001.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. Allstandards are subject to revision, and
5、 parties to agreements based on this document are encouraged toinvestigate the possibility of applying the most recent editions of the standards indicated within thisdocument. Members of IEC and ISO maintain registers of currently valid International Standards. ANSImaintain registers of currently va
6、lid U.S. National Standards.This document has been prepared as part of the service of ISAThe Instrumentation, Systems, andAutomation Society, toward a goal of uniformity in the field of instrumentation. To be of real value, thisdocument should not be static but should be subject to periodic review.
7、Toward this end, the Societywelcomes all comments and criticisms and asks that they be addressed to the Secretary, Standards andPractices Board; ISA; 67 Alexander Drive; P. O. Box 12277; Research Triangle Park, NC 27709;Telephone (919) 549-8411; Fax (919) 549-8288; E-mail: standardsisa.org.The ISA S
8、tandards and Practices Department is aware of the growing need for attention to the metricsystem of units in general, and the International System of Units (SI) in particular, in the preparation ofinstrumentation standards. The Department is further aware of the benefits to USA users of ISA standard
9、sof incorporating suitable references to the SI (and the metric system) in their business and professionaldealings with other countries. Toward this end, this Department will endeavor to introduce SI-acceptablemetric units in all new and revised standards, recommended practices, and technical report
10、s to thegreatest extent possible. Standard for Use of the International System of Units (SI): The Modern MetricSystem, published by the American Society for Testing and the ISADictionary of Measurement and Controlb) Related standards from organizations such as the International Electrotechnical Comm
11、ission, FluidControls Institute, American Petroleum Institute, American Society of Mechanical Engineers, andInstitute of Electrical and Electronics Engineersc) Manufacturers device specifications and associated technical literatured) Technical publications that contain sizing calculation methods or
12、selection criteria6.2 Review and modification of Operating Parameters formsThe appropriate measured variable or final device Operating Parameters form will generally be adequatefor new or revised devices, but must be checked against the requirements in 5.1.2. Identify andincorporate any necessary re
13、visions that must be made to the existing Operating Parameters form.6.3 Development guidelines for Device Specification forms6.3.1 Specification identification header and footerThe Operating Parameters and Device Specification forms have been developed with fixed specificationidentification headers
14、and footers. These shall be duplicated for new forms.6.3.2 Component identification subsectionDevice Specification forms have been developed with fixed component identifications subsections. Thisshall be duplicated for new forms.ISA20.00.032001 24 6.3.3 Main device subsectionsThe main measurement or
15、 control device attributes generally can be subdivided into subsections.Determine if such subsection groupings exist for the device under consideration and establish thecorresponding device-specific titles for those subsections.6.3.4 Main device subsection development and reviewThe forms format can
16、be most easily implemented by editing an existing form for a similar instrument.Examine numerous manufacturers products literature and identify their required device property data forspecifying the device or component, while encompassing the following:a) This standards content requirements identifie
17、d in 5.1.3b) The field prompt order identified in 5.1.5c) The terminology from ISA Draft TR20.00.04 (see annex A) for terms not present on the example formbeing editedThere will generally be more field prompt candidates, based on the above criteria, than can beaccommodated on the form. The criteria
18、may need to be prioritized and compromised to fit pagelimitations. The user-definable field prompts required in each subsection and the notes subsections willgenerally provide the flexibility to accommodate most applications.6.3.5 Secondary device inclusionThe decision of when to include in the form
19、 the specification of an attached or directly associated deviceshould consider the following:a) Forms should provide for attached equipment that is commonly used and available as a standardoption by most manufacturersb) A supplemental page can be developed to provide for less commonly used attached
20、or directlyassociated devices, such as has been provided for the control valves specification formc) If it is desirable to have a second supplier provide the directly associated device, a separate form forthe device should be produced6.4 Contextual help instructionsThe contextual help instructions s
21、hould clarify the field prompts context or definition and, preferably, beapplicable to all devices using that field prompt. Therefore, the only new contextual help instructions thatshould need development will occur when new field prompts are added to ISA Draft TR20.00.04 (seeannex A).6.5 Pick listR
22、eview of manufacturers literature and ISA Draft TR20.00.04 (see annex A) should be made to determinethe adequacy of the existing list to cover the new device. Unit symbols should be provided in both USCustomary and SI systems, and equivalent dimensions provided when available. New prompts should beb
23、ased on terminology from reference documents such as those identified in 6.1.2. 25 ISA20.00.0320016.6 Data dictionary updateIf ISA Draft TR20.0.04 (see annex A) does not contain adequate terms for the device specification underdevelopment, any proposed new data dictionary terms shall be submitted fo
24、r approval along with the newor revised form.6.7 Review and approvalAfter completing the form development with this standards requirements and guidelines, circulate thepreliminary form for review by peers and manufacturers. Consolidate the comments and send theproposed form to the Chairperson of ISA
25、-SP20 as a request for interpretation of standards, for theproposed new or revised form, as an addendum or future revision to ISATR20.00.012001.7 Classification and designationHardware device forms are grouped and numbered based upon the devices measurement principles orcontrol functions. Consult IS
26、ATR20.00.012001, table A.1 or table A.2, when tentatively assigning newdevice categories, form numbers, and titles.This page intentionally left blank. 27 ISA20.00.032001Annex A (informative) ReferencesThis annex is included for informational purposes and is not part of this standard. At the time ofp
27、ublication, the editions or drafts indicated below were valid. All standards, recommended practices, andtechnical reports are subject to revision, and parties to agreements based on this standard areencouraged to investigate the possibility of applying the most recent editions or drafts of the docum
28、entsindicated below.ISAISATR20.00.012001 Specification Forms for Process Measurement and Control InstrumentsPart 1: General ConsiderationsISA Draft 20.00.02 Specification Forms for Process Measurement and Control InstrumentsPart 2: Instructions for Using Specification FormsISA Draft TR20.00.04 Speci
29、fication Forms for Process Measurement and Control InstrumentsPart 4: Data DictionaryAvailable from: ISAThe Instrumentation, Systems, and Automation Society67 Alexander DrivePO Box 12277Research Triangle Park, NC 27709USATel: (919) 990-9200www.isa.orgANSIANSI X3.50-1986 (R1997) Representations for U
30、.S. Customary, SI, and Other Units to Be Used inSystems with Limited Character SetsAvailable from: American National Standards Institute11 West 42ndStreetNew York, NY 10036 USATel: (212) 642-4900www.ansi.orgISA20.00.032001 28 ASMEASME Y1.1-1989 Abbreviations for Use on Drawings and in TextAvailable
31、from: ASME3 Park AvenueNew York, NY 10016-5990USATel: (973) 882-1167www.asme.orgInternational Electrotechnical Commission (IEC)IEC 60050-351 International Electrotechnical Vocabulary - Part 351: Automatic Control(1998-09)Available from: IEC3, rue de VarembePO Box 1311211 Geneva 20SwitzerlandTel: 41
32、22 734 0150www.iec.chInternational Organization for Standardization (ISO)ISO/CD 10303-221 Library of Classes for Process Plant Application ProtocolsAvailable from: ISO1, rue de VarembePO Box 561211 Geneva 20SwitzerlandTel: 41 22 749 0111www.iso.chThis page intentionally left blank.Developing and pro
33、mulgating sound consensus standards, recommended practices, and technical reports is one of ISAs primary goals. To achieve this goal the Standards and Practices Department relies on the technical expertise and efforts of volunteer committee members, chairmen and reviewers. ISA is an American Nationa
34、l Standards Institute (ANSI) accredited organization. ISA administers United States Technical Advisory Groups (USTAGs) and provides secretariat support for International Electrotechnical Commission (IEC) and International Organization for Standardization (ISO) committees that develop process measurement and control standards. To obtain additional information on the Societys standards program, please write: ISA Attn: Standards Department 67 Alexander Drive P.O. Box 12277 Research Triangle Park, NC 27709 ISBN: 978-1-55617-755-2
