IEC INTERNATIONAL STANDARD 61987-1 First edition 2006-12 Industrial-process measurement and control. Data structures and elements in process equipment catalogues- Part 1: Measuring equipment with analogue and digital output IEC Referencenumber IEC 61987-1:2006(E) Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1. Consolidated editions The IEc is now publishing consolidated versions of its publications. For example edition numbers1.0, 1.1and 1.2 refer, respectively,to the base publication, the base publication incorporating amendment 1 and the base publication incorporating amendments 1 and 2. FurtherinformationonIEcpublications The technical content of IEC publications is kept under constant review by the IEC, thus ensuring that the content reflects current technology. Information relating to this publication,including itsvalidity,is available in the IEC Catalogue of publications (see below) in addition to new editions, amendments and corrigenda. Information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication, as well as the list of publications issued, is also available from the following: IEc Web Site (www.iec.ch) Catalogue of IEc publications The on-line catalogue on the IEC web site (www.iec.ch/searchpub) enables you to search by a variety of criteria including text searches, technical committees and date of publication. On-line information is also available on recently issued publications, withdrawn and replaced publications, as well as corrigenda. IEC Just Published This summary of recently issued publications (www.iec.ch/online news/ justpub) is also available by email. Please contact the Customer Service Centre (see below) for further information. CustomerServiceCentre If you have any questions regarding this publication or need further assistance, please contact the Customer Service Centre Email: [email protected] Tel: +41 22 919 02 11 Fax: +41229190300 IEC INTERNATIONAL STANDARD 61987-1 First edition 2006-12 Industrial-process measurement and control - Data structures and elements in process equipment catalogues- Part 1: Measuring equipment with analogue and digital output @ IEC 2006 —Copyright-all rights reserved mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Electrotechnical Commission, 3, rue de Varembe, PO Box 131, CH-1211 Geneva 20, Switzerland X PRICECODE IEC Commission Electrotechnique Internationale nternationalElectrotechnical Commission MexAyHapoAHan3nekTpoTexHuyeckagKomuCCMg For price, see current catalogue 61987-1 @ IEC:2006(E) 2 CONTENTS FOREWORD. INTRODUCTION. Scope 2 Normative references. 3 Terms and definitions Metadocuments 4 15 4.1 General.. 15 4.2 Metadocumentchaptersandfeatures 16 4.3 Nomenclature.... 18 Metadocumentforprocessmeasuringequipment. 5 18 5.1 Identification 5.2 Application.. 19 5.3 Functionand systemdesign.. 19 5.4 Input. .20 5.5 Output. 20 5.6 Performancecharacteristics 5.7 Operating conditions. .22 5.8 Mechanical construction .24 5.9 Operability. .25 5.10 Power supply. .25 5.11 Certificatesand approvals ..26 5.12 Ordering information. .26 5.13 Documentation .26 Annex A (normative) Classification of features as a function of measuring equipment. Annex B (informative)Classification of features as a function of measurement principle ......29 Bibliography ... 49 Figure 1-Classification scheme for process measuring equipment. 16 TableA.1-Classification and documentation structureof measuring equipment. 27 Table B.1 - Classification and documentation structure of flow measuring equipment.......30 Table B.2 - Classification and documentation structure of level measuring equipment .......34 Table B.3- Classification and documentation structure of pressure measuring equipment.... Table B.4-Classification and documentation structur