BS ISO 11843-4-2003 Capability of detection - Methodology for comparing the minimum detectable value with a given value《检测能力 用最小可检测值与给定值相比对的方法》.pdf
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1、BRITISH STANDARD BS ISO 11843-4:2003 Capability of detection Part 4: Methodology for comparing the minimum detectable value with a given value ICS 03.120.30; 17.020 BS ISO 11843-4:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 21 Novemb
2、er 2003 BSI 21 November 2003 ISBN 0 580 42956 3 National foreword This British Standard reproduces verbatim ISO 11843-4:2003 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee SS/6, Precision of test methods, which has the resp
3、onsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International
4、 Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British St
5、andard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and Euro
6、pean developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 8, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was
7、 last issued. Amendments issued since publication Amd. No. Date Comments Reference number ISO 11843-4:2003(E) OSI 3002INTERNATIONAL STANDARD ISO 11843-4 First edition 2003-11-01 Capability of detection Part 4: Methodology for comparing the minimum detectable value with a given value Capacit de dtect
8、ion Partie 4: Mthodologie de comparaison de la valeur minimale dtectable avec une valeur donne BSISO118434:2003IS-34811 O4:(3002E) DPlcsid Fremia ihTs PDF file mya ctnoian emdebt dedyfepcaes. In ccacnadrow eitA hebods licnesilop gnic,y tihs file mirp eb yatnde iv roweb detu slahl ton ide ebtlnu dees
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13、ISO 3002 Allr ihgtsser edevrBSISO118434:2003IS-34811 O4:(3002E) I SO 3002 All irhgts seredevr iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally car
14、ried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
15、 ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare Interna
16、tional Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the
17、elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 11843-4 was prepared by Technical Committee ISO/TC 69, Applications of statistical methods, Subcommittee SC 6, Measurement methods and results. ISO 1184
18、3 consists of the following parts, under the general title Capability of detection: Part 1: Terms and definitions Part 2: Methodology in the linear calibration case Part 3: Methodology for determination of the critical value for the response variable when no calibration data are used Part 4: Methodo
19、logy for comparing the minimum detectable value with a given value BSISO118434:2003IS-34811 O4:(3002E) iv I SO 3002 All irhgts seredevrIntroduction An ideal requirement for the capability of detection with respect to a selected state variable would be that the actual state of every observed system c
20、an be classified with certainty as either equal to or different from its basic state. However, due to systematic and random variations, this ideal requirement cannot be satisfied for the following reasons. a) In reality all reference states, including the basic state, are never known in absolute ter
21、ms of the state variable. Hence, all states can only be characterized correctly in terms of differences from the basic state, i.e. in terms of the net state variable. b) In order to prevent erroneous decisions, it is generally recommended to report differences from the basic state only, i.e. data in
22、 terms of the net state variable. NOTE In ISO Guide 30 and in ISO 11095, no distinction is made between the state variable and the net state variable. As a consequence, in those two documents reference states are without justification assumed to be known with respect to the state variable. c) Furthe
23、rmore, the calibration and the processes of sampling and preparation add random variation to the measurement results. In this part of ISO 11843 the probability is of detecting (erroneously) that a system is not in the basic state when it is in the basic state; the probability is of (erroneously) not
24、 detecting that a system, for which the value of the net state variable is equal to the minimum detectable value (x d ) is not in the basic state. BSISO118434:2003INTENRATIONAL TSANDADR IS-34811 O4:(3002E)I SO 3002 All irhgts seredevr 1Capability of detection Part 4: Methodology for comparing the mi
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