1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationExpression of performance of gas analyzersPart 1: GeneralBS EN 61207-1:2010Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/06/2011 07:40, Uncontrolled Copy, (c) BSINati
2、onal forewordThis British Standard is the UK implementation of EN 61207-1:2010. It isidentical to IEC 61207-1:2010. It supersedes BS EN 61207-1:1994, which willbe withdrawn on 1 July 2013.The UK participation in its preparation was entrusted by Technical CommitteeGEL/65, Measurement and control, to
3、Subcommittee GEL/65/2, Elements ofsystems.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct applic BSI 2011 ISBN 978 0 580 5843
4、8 1 ICS 71.040.40Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 February 2011.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDB
5、S EN 61207-1:2010ation.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/06/2011 07:40, Uncontrolled Copy, (c) BSIEUROPEAN STANDARD EN 61207-1 NORME EUROPENNE EUROPISCHE NORM July 2010 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechn
6、ique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61207-1:2010 E ICS 19.080; 71.040.40 Supersedes EN 61207-1:1994Engli
7、sh version Expression of performance of gas analyzers - Part 1: General (IEC 61207-1:2010) Expression des performances des analyseurs de gaz - Partie 1: Gnralits (CEI 61207-1:2010) Angabe zum Betriebsverhalten von Gasanalysatoren - Teil 1: Allgemeines (IEC 61207-1:2010) This European Standard was ap
8、proved by CENELEC on 2010-07-01. 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 national standard without any alteration. Up-to-date lists and bibliographical references concerning such na
9、tional 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 version in any other language made by translation under the responsibility of a CENELEC member into its own langu
10、age and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, It
11、aly, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 61207-1:2010Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/06/2011 07:40, Uncontrolled Copy, (c) BSIEN 61207-1:2010 -
12、 2 - Foreword The text of document 65B/741/FDIS, future edition 2 of IEC 61207-1, prepared by SC 65B, Devices to unify methods used in making and verifying statements on the functional performance of such analyzers; to specify which tests should be performed in order to determine the functional perf
13、ormance and how such tests should be carried out; to provide basic documents to support the application of standards of quality assurance within ISO 9001. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the
14、edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60068 (all parts), Environmental testing IEC 60359:2001, Electrical and electronic measurement equipment Expression of performance IEC 60381-1, Analogue signals for pr
15、ocess control systems Part 1: Direct current signals IEC 60382, Analogue pneumatic signal for process control systems IEC 60654 (all parts), Industrial-process measurement and control equipment Operating conditions IEC 60654-1, Industrial-process measurement and control equipment Operating condition
16、s Part 1: Climatic conditions IEC 60770 (all parts), Transmitters for use in industrial-process control systems IEC 60770-1, Transmitters for use in industrial-process control systems Part 1: Methods for performance evaluation IEC 61010-1, Safety requirements for electrical equipment for measurement
17、, control and laboratory use Part 1: General requirements IEC 61187, Electrical and electronic measurement equipment Documentation ISO 31-0, Quantities and units General principles ISO 1000, SI units and recommendations for the use of their multiples and of certain other units 3 Terms and definition
18、s 3.1 General For the purposes of this document, the following terms and definitions apply. The definitions in 3.2 (excepting 3.2.17), 3.3 and 3.4 are taken from IEC 60359. BS EN 61207-1:2010Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/06/2011 07:40, Uncontrolled Copy, (c) BSI 8 61207-1
19、 IEC:2010 3.2 Basic terms and definitions 3.2.1 measurand quantity subjected to measurement, evaluated in the state assumed by the measured system during the measurement itself NOTE 1 The value assumed by a quantity subjected to measurement when it is not interacting with the measuring instrument ma
20、y be called unperturbed value of the quantity. NOTE 2 The unperturbed value and its associated uncertainty can only be computed through a model of the measured system and of the measurement interaction with the knowledge of the appropriate metrological characteristics of the instrument that may be c
21、alled instrumental load. 3.2.2 (result of a) measurement set of values attributed to a measurand, including a value, the corresponding uncertainty and the unit of measurement IEC 60050-311, 311-01-01, modified NOTE 1 The mid-value of the interval is called the value (see 3.2.3) of the measurand and
22、its half-width the uncertainty (see 3.2.4). NOTE 2 The measurement is related to the indication (see 3.2.5) given by the instrument and to the values of correction obtained by calibration. NOTE 3 The interval can be considered as representing the measurand provided that it is compatible with all oth
23、er measurements of the same measurand. NOTE 4 The width of the interval, and hence the uncertainty, can only be given with a stated level of confidence (see 3.2.4, NOTE 1). 3.2.3 (measure-) value mid element of the set assigned to represent the measurand NOTE The measure-value is no more representat
24、ive of the measurand than any other element of the set. It is singled out merely for the convenience of expressing the set in the format V U, where V is the mid element and U the half-width of the set, rather than by its extremes. The qualifier “measure-“ is used when deemed necessary to avoid confu
25、sion with the reading-value or the indicated value. 3.2.4 uncertainty (of measurement) parameter, associated with the result of a measurement, that characterizes the dispersion of the values that could reasonably be attributed to the measurand NOTE 1 The parameter can be, for example, a standard dev
26、iation (or a given multiple of it), or a half-width of an interval having a stated level of confidence. NOTE 2 Uncertainty of measurement comprises, in general, many components. Some of these components can be evaluated from the statistical distribution of the results of a series of measurements and
27、 can be characterized by experimental standard deviations. The other components, which can also be characterized by standard deviations, are evaluated from the assumed probability distributions based on experience or other information. IEC 60050-311, 311-01-02, ISO/IEC Guide 99, 2.26 modified NOTE 3
28、 It is understood that the result of the measurement is the best estimate of the value of the measurand, and that all components of uncertainty, including those arising from systematic effects, such as components associated with corrections and reference standards, contribute to the dispersion. NOTE
29、 4 The definition and notes 1 and 2 are from GUM, Clause B.2.18. The option used in this standard is to express the uncertainty as the half-width of an interval with the GUM procedures with a coverage factor of 2. This choice corresponds to the practice now adopted by many national standards laborat
30、ories. With the normal distribution a coverage factor of 2 corresponds to a level of confidence of 95 %. Otherwise statistical elaborations are necessary to establish the correspondence between the coverage factor and the level of confidence. As the data for such elaborations are not always availabl
31、e, it is deemed preferable to state the coverage factor. This interval can be “reasonably“ assigned to describe the measurand, in the sense of the GUM definition, as in most BS EN 61207-1:2010Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/06/2011 07:40, Uncontrolled Copy, (c) BSI61207-1 I
32、EC:2010 9 usual cases it ensures compatibility with all other results of measurements of the same measurand assigned in the same way at a sufficiently high confidence level. NOTE 5 Following CIPM document INC-1 and ISO/IEC Guide 98-3, the components of uncertainty that are evaluated by statistical m
33、ethods are referred to as components of category A, and those evaluated with the help of other methods as components of category B. 3.2.5 indication or reading-value output signal of the instrument IEC 60050-311, 311-01-01, modified NOTE 1 The indicated value can be derived from the indication by me
34、ans of the calibration curve. NOTE 2 For a material measure, the indication is its nominal or stated value. NOTE 3 The indication depends on the output format of the instrument: for analogue outputs it is a number tied to the appropriate unit of the display; for digital outputs it is the displayed d
35、igitized number; for code outputs it is the identification of the code pattern. NOTE 4 For analogue outputs meant to be read by a human observer (as in the index-on-scale instruments) the unit of output is the unit of scale numbering; for analogue outputs meant to be read by another instrument (as i
36、n calibrated transducers) the unit of output is the unit of measurement of the quantity supporting the output signal. 3.2.6 calibration set of operations which establishes the relationship which exists, under specified conditions, between the indication and the result of a measurement IEC 60050-311,
37、 311-01-09 NOTE 1 The relationship between the indications and the results of measurement can be expressed, in principle, by a calibration diagram. NOTE 2 The calibration must be performed under well-defined operating conditions for the instrument. The calibration diagram representing its result is
38、not valid if the instrument is operated under conditions outside the range used for the calibration. NOTE 3 Quite often,e specially for instruments whose metrological characteristics are sufficiently known from past experience, it is convenient to predefine a simplified calibration diagram and perfo
39、rm only a verification of calibration (see 3.3.12) to check whether the response of the instrument stays within its limits. The simplified diagram is, of course, wider than the diagram that would be defined by the full calibration of the instrument, and the uncertainty assigned to the results of mea
40、surements is consequently larger. 3.2.7 calibration diagram portion of the co-ordinate plane, defined by the axis of indication and the axis of results of measurement, which represents the response of the instrument to differing values of the measurand IEC 60050-311, 311-01-10 3.2.8 calibration curv
41、e curve which gives the relationship between the indication and the value of the measurand NOTE 1 When the calibration curve is a straight line passing through zero, it is convenient to refer to the slope which is known as the instrument constant. IEC 60050-311, 311-01-11 NOTE 2 The calibration curv
42、e is the curve bisecting the width of the calibration diagram parallel to the axis of results of measurement, thus joining the points representing the values of the measurand. BS EN 61207-1:2010Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/06/2011 07:40, Uncontrolled Copy, (c) BSI 10 612
43、07-1 IEC:2010 3.2.9 indicated value value given by an indicating instrument on the basis of its calibration curve IEC 60050-311, 311-01-08 NOTE The indicated value is the measure-value of the measurand when the instrument is used in a direct measurement (see 3.3.7) under all the operating conditions
44、 for which the calibration diagram is valid. 3.2.10 (measurement) compatibility property satisfied by all the results of measurement of the same measurand, characterized by an adequate overlap of their intervals IEC 60050-311, 311-01-14 NOTE 1 The compatibility of any result of a measurement with al
45、l the other ones that represent the same measurand can be asserted only at some level of confidence, as it depends on statistical inference, a level that should be indicated, at least by implicit convention or through a coverage factor. NOTE 2 The compatibility of the results of measurements obtaine
46、d with different instruments and methods is ensured by the traceability (see 3.2.16) to a common primary standard (see 3.3.6) of the standards used for the calibration of the several instruments (and of course by the correctness of the calibration and operation procedures). NOTE 3 When two results o
47、f a measurement are not compatible it must be decided by independent means whether one or both results are wrong (perhaps because the uncertainty is too narrow), or whether the measurand is not the same. NOTE 4 Measurements carried out with wider uncertainty yield results which are compatible on a w
48、ider range, because they discriminate less among different measurands allowing to classify them with simpler models; with narrower uncertainties the compatibility calls for more detailed models of the measured systems. 3.2.11 intrinsic uncertainty of the measurand minimum uncertainty that can be ass
49、igned in the description of a measured quantity NOTE 1 No quantity can be measured with narrower and narrower uncertainty, in as much as any given quantity is defined or identified at a given level of detail. If one tries to measure a given quantity with uncertainty lower than its own intrinsic uncertainty one is compelled to redefine it with higher detail, so that one is actually measuring another quantity. See also GUM D.1.1. NOTE 2 The result of a measurement carried out with the intrinsic uncerta
