BS EN 61115-1994 Expression of performance of sample handling systems for process analyzers《程序分析器用试样处理系统性能表达法》.pdf

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1、BRITISH STANDARD BS EN 61115:1994 IEC1115:1992 Expression of performance of sample handling systems for process analyzers The European Standard EN61115:1993 has the status of a BritishStandard UDC 621.371.79:543.25BSEN61115:1994 This BritishStandard, having been prepared under the directionof the In

2、dustrial-Process Measurementand Control Standards Policy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 15 January 1994 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference PCL/1 Draft for comment87/20956DC ISBN

3、0 580 22675 1 Cooperating organizations The European Committee for Electrotechnical Standardization (CENELEC), under whose supervision this European Standard was prepared, comprises the national committees of the following countries: Austria Italy Belgium Luxembourg Denmark Netherlands Finland Norwa

4、y France Portugal Germany Spain Greece Sweden Iceland Switzerland Ireland United Kingdom Amendments issued since publication Amd. No. Date CommentsBSEN61115:1994 BSI 01-2000 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Text of EN61115 3 National annex

5、NA (informative) Committees responsible Inside back cover National annex NB (informative) Cross-references Inside back coverBSEN61115:1994 ii BSI 01-2000 National foreword This BritishStandard has been prepared under the direction of the Industrial-Process Measurement and Control Standards Policy Co

6、mmittee and is the English language version of EN61115:1993 Expression of performance of sample handling systems for process analyzers, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC1115:1992 published by the International Electrotechnica

7、l Commission (IEC). The following print types are used in this standard: requirements proper: in roman type; test specifications: in italic type; notes: in smaller roman type. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are re

8、sponsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to22, an inside back cover and a back cover. Th

9、is standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN61115 October 1993 UDC 621.371.79:543.25 Descriptors: Process analyzers, samples, sa

10、mple handling, sample handling systems, performance English version Expression of performance of sample handling systems forprocess analyzers (IEC1115:1992) Expression des qualits de fonctionnement des systmes de manipulation dchantillon pour analyseurs de processus (CEI1115:1992) Angabe zum Betrieb

11、sverhalten von Probenhandhabungssystemen fr Prozeanalysengerte (IEC1115:1992) This European Standard was approved by CENELEC on 1993-09-22. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a n

12、ational standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A versio

13、n in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, Fra

14、nce, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Cen

15、tral Secretariat: rue de Stassart 35, B-1050 Brussels 1993 Copyright reserved to CENELEC members Ref. No. EN61115:1993 EEN61115:1993 BSI 01-2000 2 Foreword The CENELEC questionnaire procedure, performed for finding out whether or not the International Standard IEC1115:1992 could be accepted without

16、textual changes, has shown that no common modifications were necessary for the acceptance as European Standard. The reference document was submitted to the CENELEC members for formal vote and was approved by CENELEC as EN61115 on22September 1993. The following dates were fixed: Annexes designated “n

17、ormative” are part of the body of the standard. Annexes designated “informative” are given only for information. In this standard, Annex A, Annex B, Annex C and Annex ZA are normative and Annex D and Annex E are informative. Contents Page Foreword 2 Introduction 3 1 Scope and object 3 1.1 Scope 3 1.

18、2 Object 4 2 Normative references 4 2.1 IEC standards 4 2.2 ISO standards 4 3 Definitions 4 3.1 General definitions 4 3.2 Terms related to conditions of operation, transportation and storage 7 3.3 Terms related to the specification of the performance of sample handling systems and sample handling sy

19、stem components 8 4 Procedures for statements 11 4.1 Statements concerning the requirements for a sample handling system (user) 11 Page 4.2 Statements concerning the requirements for a sample handling system (manufacturer of process analyzer) 11 4.3 Statements concerning sample handling system compo

20、nents (manufacturer of sample handling system components) 12 4.4 Statements concerning sample handling systems (manufacturer of sample handling systems) 12 4.5 Statements on special performance characteristics 12 Annex A (normative) Purpose, functions and properties of sample handling systems 14 Ann

21、ex B (normative) Operating groups and limit ranges of operation, storage and transport 17 Annex C (normative) Verification of time constants of a measuring system for process analysis 19 Annex D (informative) Index of definitions 19 Annex E (informative) Bibliography 21 Annex ZA (normative) Other in

22、ternational publications quoted in this standard with the references of the relevant European publications 22 Figure 1 Schematic example for the use of terms describing the functions of sample transport and exhaust stream disposal 5 Figure 2 Time constants and relation between T 10 , T r(T f ) and T

23、 90 8 Figure A.1 Schematic outline of a complete measuring system for process analysis consisting of a process analyzer and a sample handling system6 14 Figure A.2 Simple example for a complete measuring system for process analysis 15 Table A.1 Functions of sample handling system components 16 Table

24、 B.1 Operating groups 17 Table B.2 Primary influence quantities according to operating groups 18 Table B.3 Limit ranges for operation, storage and transport 19 latest date of publication ofan identical national standard (dop) 1994-10-01 latest date of withdrawal ofconflicting national standards (dow

25、) 1994-10-01EN61115:1993 BSI 01-2000 3 Introduction Most process or environmental analyzers are designed to work within specified limits of the properties of the sample fluid (e.g.pressure, dew-point) at the sample inlet as well as the outlet1,2. Moreover, process analyzers may need auxiliary fluids

26、 or other utilities for their correct function. It is the purpose of a sample handling system to connect one or more process analyzers with one or more source fluids and the environment, so that the requirements of the analyzer are met, and so that it is possible for the analyzer to work properly ov

27、er an acceptable period of time with an economically justified amount of maintenance work. (SeeAnnex A for the description of the purpose, functions and properties of sample handling systems.) Sample handling systems may fulfill the following functions1: sample extraction; sample transport; sample c

28、onditioning; exhaust stream disposal; supply of utilities; sample stream switching; performance monitoring and control. Some of the functions can be completely or partly fulfilled by components which are integral parts of an analyzer or which are external to the sample handling system. For the purpo

29、se of this standard these components are not considered part of the sample handling system. The design of a sample handling system depends on the properties of the source fluid, the process analyzer, and the disposal points. Furthermore, the design depends on the properties required for the complete

30、 measuring device. Testing a sample handling system is very important. Due to the variety of system configurations and requirements for a system, many different test procedures are applied in practice, but in this standard only the test procedures which are used in most cases are specified. User and

31、 manufacturer may agree on additional test procedures, but these are not covered in this standard. 1 Scope and object 1.1 Scope This International Standard specifies the tests which should be carried out to determine the functional performance of sample handling systems. In addition it specifies the

32、 information to be provided by the manufacturers and users of such systems. It is applicable to: a) systems handling gaseous or liquid samples for process analyzers used for any ultimate purpose, e.g.process control, emission, ambient air monitoring, etc.; b) complete systems and system components;

33、c) power supplies and instrumentation for providing and controlling other utilities necessary for process analyzers or sample handling system components, only in so far as they are a functional part of the system; d) facilities for maintaining system performance; e) facilities for maintaining the pe

34、rformance of the process analyzer if these are part of the sample handling system and not the analyzer. NOTE 1This standard has been prepared in accordance with the general principles set out in IEC359. NOTE 2Requirements for general principles concerning quantities, units and symbols are given in I

35、SO1000 and recommendations for the use of their multiples and of certain other units in ISO31. 1.1.1 Aspects excluded from scope This standard does not cover: general aspects of process analyzers (seeIEC746 for electrochemical analyzers); NOTEAn IEC standard is in preparation for gas analyzers. elec

36、tric safety requirements (seeIEC348); safety aspects concerning explosive or toxic hazards; aspects concerning applications where regulations or legal metrology are involved, such as atmospheric pollution. For such aspects more elaborate work going on inside ISO such as ISO6712 applies; requirements

37、 for output signals (seeIEC381-1 and IEC381-2); influence of environmental conditions (seeIEC68). 1.1.2 Equipment excluded from scope This standard does not apply to: systems for handling solid samples; equipment intended for use in explosive gas atmospheres (seeIEC79-0 to IEC79-12).EN61115:1993 4 B

38、SI 01-2000 1.2 Object This standard is intended to specify and to unify the general aspects in the terminology and definitions related to the functional performance of sample handling systems for process analyzers; to specify the tests which, in most cases, should be performed to determine the funct

39、ional performance of sample handling systems; to specify what information should be available for the manufacturer of sample handling systems. This information may be provided by the user or the manufacturer of process analyzers or by the manufacturer of sample handling system components; to specify

40、 what information should be available for the user of sample handling systems. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid.

41、 All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Stand

42、ards. 2.1 IEC standards IEC359:1987, Expression of the performance of electrical and electronic measuring equipment. 2.2 ISO standards ISO31, Quantities and units Parts0 to13. ISO1000:1981, SI units and recommendations for the use of their multiples and certain other units. NOTESeeAnnex E for inform

43、ative references of ISO and IECstandards. 3 Definitions 3.1 General definitions (SeeAnnex A and Figure A.1 and Figure A.2 for a description of sample handling systems.) 3.1.1 process analyzer an analytical instrument connected to a source fluid that automatically provides output signals giving infor

44、mation in relation to a quantity of one or more components present in a fluid mixture or in relation to physical or chemical properties of a fluid which depend on its composition NOTEFor on-line or extractive process analyzers a sample stream is extracted from the source fluid and transported to the

45、 analyzer. With an in-line or in situ analyzer the measurement is performed within the source fluid. 3.1.2 sample handling system a system which connects one or more process analyzers with the source fluid, disposal points and utilities NOTE 1A sample handling system may extract the required sample

46、stream from one or more source fluids and condition it in order to meet all the input requirements of the process analyzer so that an accurate measurement of the properties under investigation is possible. The system may also ensure the appropriate disposal of exhaust streams and the supply of utili

47、ties as necessary. Instrumentation for ensuring the proper function of a sample handling system component or for facilitating maintenance work is considered part of the sample handling system if it is a functional part of it. NOTE 2SeeAnnex A and Figure A.1 and Figure A.2 for a description of sample

48、 handling systems. NOTE 3Figure 1 gives a schematic example for the use of terms describing the functions of sample transport and exhaust stream disposal. 3.1.3 Sample extraction The function of those parts of a sample handling system which extract the required sample stream from the source fluid. N

49、OTEThe sample stream should be extracted in such a way that it is truly representative of the source fluid. 3.1.3.1 source fluid the source fluid (gas or liquid) from which the sample stream is extracted and of which the composition or properties are to be measured NOTE 1The source fluid may flow through a process line or fill a volume. Ambient air may also be the source fluid. NOTE 2The source fluid and the sample fluid in the sample line may consist of a combination of the following components: