1、September 2017 English price group 12No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 71.040.40!%muu“2748282www.din.
2、deDIN EN ISO 16664Gas analysis Handling of calibration gases and gas mixtures Guidelines (ISO 16664:2017);English version EN ISO 16664:2017,English translation of DIN EN ISO 16664:2017-09Gasanalyse Handhabung von Kalibriergasen und Gasgemischen Richtlinien (ISO 16664:2017);Englische Fassung EN ISO 1
3、6664:2017,Englische bersetzung von DIN EN ISO 16664:2017-09Analyse des gaz Mise en oeuvre des gaz et des mlanges de gaz pour talonnage Lignes directrices (ISO 16664:2017);Version anglaise EN ISO 16664:2017,Traduction anglaise de DIN EN ISO 16664:2017-09SupersedesDIN EN ISO 16664:200811www.beuth.deDT
4、ranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.Document comprises 23 pages09.17 DIN EN ISO 16664:2017-09 2 A comma is used as the decimal marker. National foreword This document (EN ISO 16664:2017) has been prepared by Technical Comm
5、ittee ISO/TC 158 “Analysis of gases” in collaboration with Technical Committee CEN/SS N21 “Gaseous fuels and combustile gas”. The responsible German body involved in its preparation was DIN-Normenausschuss Materialprfung (DIN Standards Committee Materials Testing), Working Committee NA 062-05-73 AA
6、“Gas analysis and gas quality”. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 472:2013 DIN EN ISO 472:2013-06 ISO 6142-1 DIN EN ISO 6142-1 ISO/IEC 17025 DIN EN ISO/IEC 17025 Amendments This standard differs from DIN EN ISO 16664:2008-
7、11 as follows: a) Figures 1 and 5 have been revised to more clearly depict the arrangements; b) several references and terminological entries have been updated. Previous editions DIN EN ISO 16664: 2008-11 National Annex NA (informative) Bibliography DIN EN ISO 472:2013-06, Plastics Vocabulary (ISO 4
8、72:2013); Trilingual version EN ISO 472:2013 DIN EN ISO 6142-1, Gas analysis Preparation of calibration gas mixtur Part 1: Gravimetric method for Class I mixtures DIN EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories EUROPEAN STANDARD NORME EUROPENNE E
9、UROPISCHE NORM EN ISO 16664 June 2017 ICS 71.040.40 Supersedes EN ISO 16664:2008 English Version Gas analysis Handling of calibration gases and gas mixtures Guidelines (ISO 16664:2017) Analyse des gaz Mise en oeuvre des gaz et des mlanges de gaz pour talonnage Lignes directrices (ISO 16664:2017) Gas
10、analyse Handhabung von Kalibriergasen und Gasgemischen Richtlinien (ISO 16664:2017) This European Standard was approved by CEN on 19 September 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status o
11、f a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German
12、). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia,
13、Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey an
14、d United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. N
15、o. EN ISO 16664:2017 E EN ISO 16664:2017 (E) 2 DIN EN ISO 16664:2017-09 Contents Page European foreword . 3 Foreword 4 Introduction 5 1 Scope 6 2 Normative references 6 3 Terms and definitions . 6 4 Transport and storage . 8 4.1 General remarks 8 4.2 Low temperature . 8 4.3 High temperature 9 4.4 Wa
16、ter . 9 4.5 Storage and handling . 9 5 Mode of withdrawal 9 5.1 General 9 5.2 Minimum utilization pressure 9 5.3 Temperature 10 5.4 Pressure reduction and flow 10 5.5 Replacement, change of cylinder positions 10 6 Transfer system 10 6.1 Purging procedure . 10 6.2 Considerations when designing and co
17、nstructing gas transfer lines 11 6.2.1 Modes of gas sampling 11 6.2.2 Pressure- and flow-reducing equipment . 12 6.2.3 Material for the construction of transfer lines 12 6.2.4 General methods and examples of sampling systems 15 7 Stability 18 Annex A (informative) Check on the stability of calibrati
18、on gas mixtures by end-users 19 Bibliography . 21 EN ISO 16664:2017 (E) European foreword This document (EN ISO 16664:2017) has been prepared by Technical Committee ISO/TC 158 “Analysis of gases”. This European Standard shall be given the status of a national standard, either by publication of an id
19、entical text or by endorsement, at the latest by December 2017, and conflicting national standards shall be withdrawn at the latest by December 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsibl
20、e for identifying any or all such patent rights. This document supersedes EN ISO 16664:2008. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus,
21、Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the Un
22、ited Kingdom. Endorsement notice The text of ISO 16664:2017 has been approved by CEN as EN ISO 16664:2017 without any modification. 3 DIN EN ISO 16664:2017-09 ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies).
23、The work of preparing International Standards is normally carried 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-g
24、overnmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described
25、 in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).Attention is drawn to
26、the possibility that some of the 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. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the IS
27、O list of patent declarations received (see www .iso .org/ patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions
28、 related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .htmlThis document was prepared by Technical Committee ISO/TC 158, Analysis of
29、gases.This second edition cancels and replaces the first edition (ISO 16664:2004), which has been technically revised. The major changes are the following: Figures 1 and 5 have been revised to more clearly depict the arrangements; several references and terminological entries have been updated.EN IS
30、O 16664:2017 (E) 4 DIN EN ISO 16664:2017-09 IntroductionThis document uses the terms “calibration gas” for both gas mixtures and pure gases as the limiting case of gas mixtures.The quality of calibration gases in cylinders as certified by producers is defined bya) the correct analyte content;b) a kn
31、own uncertainty which is appropriate for its intended use;c) the stability;d) the homogeneity.During its utilization period, the quality of calibration gases is influenced by storage conditions at the manufacturers and users sites; transport conditions; modes of calibration gas withdrawal and transf
32、er; the transfer system employed.EN ISO 16664:2017 (E) 5 DIN EN ISO 16664:2017-09 SAFETY PRECAUTIONS National and international safety regulations concerning storage, use and transportation of pure gases and gas mixtures are to be followed in addition to this document.1 ScopeThis document describes
33、factors that may influence the composition of pure gases and homogeneous gas mixtures used for calibration purposes. This document only applies to gases or gas mixtures that are within the “utilization period”. It provides the following guidelines for the handling and use of calibration gas mixtures
34、: storage of calibration gas cylinders; calibration gas withdrawal from cylinders; transfer of calibration gas from cylinders to the point of calibration.It also outlines a method of assessing the stability of a gas mixture, taking into account the gas composition uncertainty given on the certificat
35、e and the users measurement uncertainty.2 Normative referencesThere are no normative references in this document.3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.ISO and IEC maintain terminological databases for use in standardization at the followi
36、ng addresses: IEC Electropedia: available at http:/ www .electropedia. org/ ISO Online browsing platform: available at http:/ www. iso. org/ obp3.1calibration gaspure gas or gas mixture used for calibration3.2calibration gas mixturegas mixture of known stability (3.9) and homogeneity (3.4) whose com
37、position is well established for use in the calibration or verification of a measuring instrument or for the validation of a measurementNote 1 to entry: Calibration gas mixtures are measurement standards (Annex A) as defined in ISO/IEC Guide 99:2007.SOURCE: ISO 7504:2015, 5.13.3componentchemical ent
38、ity at a defined physical state present in a material or in a mixtureSOURCE: ISO 7504:2015, 3.3EN ISO 16664:2017 (E) 6 DIN EN ISO 16664:2017-09 3.4homogeneitystate of a gas mixture wherein all of its components are distributed uniformly throughout the volume occupied by the gas mixtureSOURCE: ISO 75
39、04:2015, 3.13.5impurityundesired minor component present in a parent gas (and thus detectable in a gas mixture made of this parent gasSOURCE: ISO 7504:2015, 5.53.6leak ratevolume of fluid leaking from the system per unit of time due to incomplete sealing of materials3.7leak tightnessconformity to a
40、specified leak rate3.8step response timeduration between the instant when an input quantity value of a measuring instrument or measuring system is subjected to an abrupt change between two specified constant quantity values and the instant when a corresponding indication settles within specified lim
41、its around its final steady valueSOURCE: ISO/IEC Guide 99:20073.9stabilityattribute of a gas mixture, under specified conditions, to maintain its composition within specified uncertainty limits for a specified period of time (maximum storage life)SOURCE: ISO 7504:2015, 3.23.10maximum storage lifeper
42、iod after which the properties stated for a gas mixture cannot be warranted to lie within their limitsNote 1 to entry: This period is usually identified as that for which the producer ensures that the gas mixture maintains its composition within the specified limits when it is stored in accordance w
43、ith the requirements based upon the concepts defined in ISO 7504:2015, 7.1 to 7.4.Note 2 to entry: The end of this period may be indicated by an “expiry date” (see also ISO 6142-1).SOURCE: ISO 7504:2015, 7.53.11transfer systemgas-conducting system which begins at the cylinder valve and ends at the g
44、as sample inlet to the measuring instrument and includes all structural elementsEN ISO 16664:2017 (E) 7 DIN EN ISO 16664:2017-09 3.12measurement uncertaintynon-negative parameter characterizing the dispersion of the quantity values being attributed to a measurand, based on the information usedNote 1
45、 to entry: Measurement uncertainty includes components arising from systematic effects, such as components associated with corrections and the assigned quantity values of measurement standards, as well as the definitional uncertainty. Sometimes estimated systematic effects are not corrected for but,
46、 instead, associated measurement uncertainty components are incorporated.Note 2 to entry: The parameter may be, for example, a standard deviation called standard measurement uncertainty (or a specified multiple of it), or the half-width of an interval, having a stated coverage probability.Note 3 to
47、entry: Measurement uncertainty comprises, in general, many components. Some of these may be evaluated by Type A evaluation of measurement uncertainty from the statistical distribution of the quantity values from series of measurements and can be characterized by standard deviations. The other compon
48、ents, which may be evaluated by Type B evaluation of measurement uncertainty, can also be characterized by standard deviations, evaluated from probability density functions based on experience or other information.Note 4 to entry: In general, for a given set of information, it is understood that the
49、 measurement uncertainty is associated with a stated quantity value attributed to the measurand. A modification of this value results in a modification of the associated uncertainty.SOURCE: ISO/IEC Guide 99:2007, 2.263.13utilization periodtime between the date of certification and the expiry date3.14permeabilityproperty of a material of transmitting gases and liquids by passage through one surface and out at another surface by diffusio
