1、BSI Standards PublicationBS EN ISO 17621:2015W o r k p l a c e a t m o s p h e r e s Short term detector tubemeasurement systems Requirements and testmethodsBS EN ISO 17621:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO17621:2015. It supersedes BS EN 1
2、231:1997 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee EH/2/2, Work place atmospheres.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovis
3、ions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 76988 7ICS 13.040.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published u
4、nder the authority of theStandards Policy and Strategy Committee on 31 October 2015.Amendments/corrigenda issued since publicationDateText affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17621 September 2015 ICS 13.040.30 Supersedes EN 1231:1996English Version Workplace atmospheres
5、- Short term detector tube measurement systems - Requirements and test methods (ISO 17621:2015) Air des lieux de travail - Systmes de mesurage par tube dtecteur court terme - Exigences et mthodes dessai (ISO 17621:2015) Arbeitsplatzatmosphre - Kurzzeitprfrhrchen-Messeinrichtungen - Anforderungen und
6、 Prfverfahren(ISO 17621:2015) This European Standard was approved by CEN on 7 May 2015. CEN 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 list
7、s 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). A version in any other language made by translation under
8、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, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yug
9、oslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPE
10、N DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17621:2015 EBS EN ISO 17621:2015EN ISO 17621:2015 (E) 3 Eur
11、opean foreword This document (EN ISO 17621:2015) has been prepared by Technical Committee ISO/TC 146 “Airquality“ in collaboration with Technical Committee CEN/TC 137 “Assessment of workplace exposure tochemical and biological agents” the secretariat of which is held by DIN. This European Standard s
12、hall be given the status of a national standard, either by publication of anidentical text or by endorsement, at the latest by March 2016, and conflicting national standards shallbe withdrawn at the latest by March 2016. Attention is drawn to the possibility that some of the elements of this documen
13、t may be the subject ofpatent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patentrights. This document supersedes EN 1231:1996. According to the CEN-CENELEC Internal Regulations, the national standards organizations of thefollowing countries are bound to i
14、mplement this European Standard: Austria, Belgium, Bulgaria,Croatia, 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
15、, Slovakia, Slovenia, Spain, Sweden, Switzerland,Turkey and the United Kingdom. Endorsement notice The text of ISO 17621:2015 has been approved by CEN as EN ISO 17621:2015 without any modification. BS EN ISO 17621:2015ISO 17621:2015(E)Foreword vIntroduction vi1 Scope . 12 Normative references 13 Ter
16、ms and definitions . 14 Requirements 34.1 General . 34.2 Detector tubes . 34.2.1 Specified measuring range 34.2.2 Scale 34.2.3 Evaluation of the stain. 44.2.4 Shelf life . 44.2.5 Mechanical strength 44.2.6 Transportation temperature stability . 44.2.7 Packing of the detector tubes 44.2.8 Interferenc
17、es . 44.2.9 Overloading 44.2.10 Environmental influences 44.2.11 Instruction for use for detector tubes . 54.3 Detector tube pump 54.3.1 General 54.3.2 Stroke volume . 54.3.3 Leakage 54.3.4 Mechanical strength 54.3.5 Mechanical durability 54.3.6 Explosion hazard . 64.3.7 Instructions for use for det
18、ector tube pumps . 65 Test conditions . 65.1 General . 65.2 Reagents 65.3 Apparatus 65.4 Independent method . 65.5 Generation of test gas mixtures 65.6 Test conditions for detector tubes . 75.7 Test conditions for detector tube pumps . 76 Test methods . 76.1 Detector tubes . 76.1.1 Visual checks . 7
19、6.1.2 Test procedures. 86.1.3 Mechanical strength 96.2 Detector tube pumps 106.2.1 Stroke volume 106.2.2 Leakage . 116.2.3 Mechanical strength .116.2.4 Mechanical durability .116.2.5 Explosion hazard (electrically driven detector tube pumps only) 116.2.6 Instructions for use.117 Uncertainty of measu
20、rement 117.1 Potential sources of uncertainty . 117.2 Estimation of the uncertainty components . 127.2.1 Combined stain component 127.2.2 Pump-stroke volume .14 ISO 2015 All rights reserved iiiContents PageBS EN ISO 17621:2015ISO 17621:2015(E)7.2.3 Effect of temperature 147.2.4 Effect of relative hu
21、midity 157.2.5 Test gas concentration used for evaluation .157.2.6 Stain-length reading.167.2.7 Analytical phenomena .167.2.8 Atmospheric pressure 167.2.9 Diffusive leakage into detector tube 167.2.10 Non-constant sampling flow . 177.3 Combined standard uncertainty . 177.4 Expanded uncertainty . 188
22、 Test report 188.1 Detector tubes 188.2 Detector tube pumps 189 Marking .199.1 Boxes . 199.2 Detector tubes 199.3 Detector tube pumps 19Annex A (normative) Test sequence 20Annex B (normative) List of test instruments 21Annex C (informative) Example for calculation of expanded uncertainty .22Bibliogr
23、aphy .25iv ISO 2015 All rights reservedBS EN ISO 17621:2015ISO 17621:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO t
24、echnical 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. ISO collaborates clos
25、ely 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 in the ISO/IEC Directives, Part 1. In particular the different approval criteria n
26、eeded 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 the possibility that some of the elements of this document may be the subject of paten
27、t 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 ISO list of patent declarations received (see www.iso.org/patents).Any trade name used i
28、n this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barrie
29、rs to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 146, Air quality, Subcommittee SC 2, Workplaces atmospheres. ISO 2015 All rights reserved vBS EN ISO 17621:2015ISO 17621:2015(E)IntroductionMany short-term detector tube
30、 measurement systems consist of a (length-of-stain) detector tube connected to an associated detector tube pump. When workplace air containing a particular chemical agent is drawn through the detector tube, a colour change takes place corresponding to the concentration.Such short-term detector tube
31、measurement systems have many applications. This International Standard refers to detector tubes used for workplace air monitoring. These detector tubes can be used for measurement tasks such as follows: determination of the presence or absence of an analyte; finding the approximate range of concent
32、ration; determination of the efficiency of control measurements; determination of emission sources and emission changes in time; determination of compliance with ceiling or short-term limit values, as long as the device covers the reference time period and the precision requirements for the measurem
33、ent.To cover the possible range of concentration that can be encountered in the workplace, a combination of two or more measurements using detector tubes with restricted but complementary and overlapping measuring ranges can also be used.This International Standard will enable the manufacturers, tes
34、t houses, certification bodies, and the users to adopt a consistent approach to the assessment of performance of short-term detector tube measurement systems.vi ISO 2015 All rights reservedBS EN ISO 17621:2015Workplace atmospheres Short term detector tube measurement systems Requirements and test me
35、thods1 ScopeThis International Standard specifies requirements and test methods under prescribed laboratory conditions for length-of-stain detector tubes and their associated pump (detector tube measurement system) used for short-term measurements of the concentration of specified chemical agents in
36、 workplace air.This International Standard is not applicable to measurements made to demonstrate compliance with long-term limit values to personal exposure with a reference period of more than 15 min.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in t
37、his document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 6141, Gas analysis Requirements for certificates for calibration gases and gas mi
38、xturesISO 6142, Gas analysis Preparation of calibration gas mixtures Gravimetric methodISO 6143, Gas analysis Comparison methods for determining and checking the composition of calibration gas mixturesISO 6144, Gas analysis Preparation of calibration gas mixtures Static volumetric methodISO 6145-1,
39、Gas analysis Preparation of calibration gas mixtures using dynamic volumetric methods Part 1: Methods of calibrationISO 6145-4, Gas analysis Preparation of calibration gas mixtures using dynamic volumetric methods Part 4: Continuous syringe injection methodISO 6145-6, Gas analysis Preparation of cal
40、ibration gas mixtures using dynamic volumetric methods Part 6: Critical orificesISO 6145-10, Gas analysis Preparation of calibration gas mixtures using dynamic volumetric methods Part 10: Permeation methodISO 9169, Air quality Definition and determination of performance characteristics of an automat
41、ic measuring systemIEC 60079-0, Explosive atmospheres Part 0: Equipment General requirements3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.INTERNATIONAL STANDARD ISO 17621:2015(E) ISO 2015 All rights reserved 1BS EN ISO 17621:2015ISO 17621:2015(E)
42、3.1(length-of-stain) detector tubetransparent tube containing chemical reagents in which a colour change is produced when an air sample is drawn through itNote 1 to entry: The length of the stain produced, relative to a graduated scale, provides a measure of the concentration of a specific chemical
43、agent in air.Note 2 to entry: Some detector tubes are designed to work in two stages. In that case, a pre-tube and an analyser tube are used in series to produce one measurement.SOURCE: EN 1540:2011, 3.2.4, modified “glass tube” replaced by “transparent tube” and Note 2 to entry added.3.2short-term
44、detector tubedetector tube category that provides a means of obtaining a rapid measurement of the concentration of a specified chemical agent in airNote 1 to entry: The averaging period of the measurement can vary from a few seconds up to about 15 min depending on the measurement system and the targ
45、et concentration of the analyte.3.3detector tube pumpdevice for pulling air through a detector tubeNote 1 to entry: Detector tube pumps can be manually or mechanically driven stroke pumps or piston pumps.Note 2 to entry: Other types of detector tube pumps which are not dealt with in this Internation
46、al Standard are electrically driven continuous pumps, which can emulate stroke pumps.3.4detector tube measurement systemcomplete measurement system consisting of a detector tube and a detector tube pump3.5chemical agentchemical element or compound on its own or admixed as it occurs in the natural st
47、ate or as produced, used, or released, including release as waste, by any work activity, whether or not produced intentionally and whether or not placed on the marketSOURCE: EN 1540:2011, 2.1.23.6(detector tube) measuring rangescale of concentration which is marked on the detector tubeNote 1 to entr
48、y: By increasing or decreasing the number of sampling strokes, the measuring range can be shifted lower or higher.3.7specified (detector tube) measuring rangeconcentration range for which the measurement uncertainty of the detector tube is below a given value3.8interferentconstituent of the (air) sa
49、mple having an adverse effect on the accuracy of the measurementSOURCE: EN 1540:2011, 4.52 ISO 2015 All rights reservedBS EN ISO 17621:2015ISO 17621:2015(E)3.9test gasgas of sufficient stability and homogeneity whose composition is properly established for use to verify the response of a measuring instrument or to validate a measurement method3.10expanded uncertaintyquantity defining an interval about a result of a measurement, expected to encompass a large fraction of the distribution of values tha
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