BS EN 45544-3-2015 Workplace atmospheres Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours Performance requirements.pdf

1、BSI Standards PublicationBS EN 45544-3:2015Workplace atmospheres Electrical apparatus used forthe direct detection and directconcentration measurement oftoxic gases and vapoursPart 3: Performance requirements forapparatus used for general gas detectionBS EN 45544-3:2015 BRITISH STANDARDNational fore

2、wordThis British Standard is the UK implementation of EN 45544-3:2015.It supersedes BS EN 45544-3:2000 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee EXL/31/1, Gas detectors.A list of organizations represented on this committee can beobtained on reques

3、t to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 81575 1ICS 13.040.30; 13.320Compliance with a Brit

4、ish Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 28 February 2015.Amendments issued since publicationDate Text affectedBS EN 45544-3:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM

5、 EN 45544-3 January 2015 ICS 13.040.30; 13.320 Supersedes EN 45544-3:1999 English Version Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Part 3: Performance requirements for apparatus used for general gas d

6、etection Atmosphres des lieux de travail - Appareillage lectrique utilis pour la dtection directe des vapeurs et gaz toxiques et le mesurage direct de leur concentration - Partie 3: Exigences de performance des appareillages utiliss pour la dtection de gaz gnrale Arbeitsplatzatmosphre - Elektrische

7、Gerte fr die direkte Detektion und direkte Konzentrationsmessung toxischer Gase und Dmpfe - Teil 3: Anforderungen an das Betriebsverhalten von Gerten, die fr allgemeine Gaswarnanwendungen eingesetzt werden This European Standard was approved by CENELEC on 24 November 2014. CEN and CENELEC members ar

8、e 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 national standards may be obtained on application to

9、the CEN-CENELEC Management Centre or to any CEN and 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 CEN and CENELEC member into its own language and notified to the C

10、EN-CENELEC Management Centre has the same status as the official versions. CEN and CENELEC members are the national standards bodies and national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedon

11、ia, 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 Electrotechnical Standardization Comit Europen de Norm

12、alisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN/CENELEC All rights of exploitation in any form and by any means reserved worldwide for CEN national Members and for CENELEC Members. Ref. No. EN 45544

13、-3:2015 E BS EN 45544-3:2015EN 45544-3:2015 (E) 2 Contents Page Foreword . 3 Introduction . 4 1 Scope 5 2 Normative references 5 3 Terms and definitions . 5 4 General requirements . 5 5 Performance requirements . 5 5.1 General . 5 5.2 Standard requirements . 5 5.3 Unpowered storage . 6 5.4 Calibrati

14、on curve . 6 5.5 Mechanical tests 6 5.5.1 Vibration . 6 5.5.2 Drop test . 6 5.6 Environmental tests 6 5.6.1 Temperature . 6 5.6.2 Pressure . 6 5.6.3 Humidity . 6 5.6.4 Air velocity . 6 5.7 Performance tests . 7 5.7.1 Alarm set point(s) 7 5.7.2 Time to alarm or alarm reading 7 5.7.3 Flow rate . 7 5.7

15、.4 Warm-up time . 7 5.7.5 Time of response . 7 5.7.6 Time of recovery 7 5.7.7 Addition of sampling probe (portable and transportable apparatus only) 7 5.7.8 Field calibration kit 7 5.7.9 Gas concentrations above the full scale indication 7 5.7.10 Extended operation in test gas 7 5.7.11 Orientation t

16、ests 8 5.8 Electrical tests . 8 5.8.1 Battery capacity . 8 5.8.2 Power supply variations . 8 5.8.3 Electromagnetic compatibility . 8 5.8.4 Time-weighted average (TWA) function 8 5.9 Stability . 8 5.10 Verification of software and digital components . 8 Annex A (informative) Table of significant chan

17、ges in comparison to EN 45544-3:1999 9 BS EN 45544-3:2015EN 45544-3:2015 (E) 3 Foreword This document (EN 45544-3:2015) has been prepared by CEN/CENELEC Joint Working Group Continuous Measuring Instruments (JWG CMI). The following dates are fixed: latest date by which this document has to be impleme

18、nted at national level by publication of an identical national standard or by endorsement (dop) 2015-11-24 latest date by which the national standards conflicting with this document have to be withdrawn (dow) 2017-11-24 This document supersedes EN 45544-3:1999. BS EN 45544-3:2015EN 45544-3:2015 (E)

19、4 Introduction National laws and regulations based on European Directives require the assessment of the potential exposure of a worker to chemical agents in workplace atmospheres. EN 45544, Workplace atmospheres Electrical apparatus used for the direct detection and direct concentration measurement

20、of toxic gases and vapours, consists of the following parts: Part 1: General requirements and test methods; Part 2: Performance requirements for apparatus used for exposure measurement; Part 3: Performance requirements for apparatus used for general gas detection; Part 4: Guide for selection, instal

21、lation, use and maintenance. EN 45544 series is based on EN 482 which specifies general performance requirements for procedures for measuring the concentration of chemical agents in workplace atmospheres. These performance requirements are intended to apply under environmental conditions present at

22、the workplace. However, because a wide range of environmental conditions are encountered in practice, this document specifies requirements that have to be fulfilled by measuring procedures when tested under prescribed laboratory conditions. EN 45544-2 details the performance requirements outlined in

23、 EN 482 specifically for electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours intended for exposure measurement. EN 45544-3 details the performance requirements for general gas detection apparatus, e.g. safety warning, leak detection. The

24、 measuring range will be defined by the manufacturer. In general, the requirements for accuracy will be higher for EN 45544-2 apparatus than for EN 45544-3 apparatus. The same apparatus may be used for applications covered by EN 45544-2 and EN 45544-3. EN 45544 series will help manufacturers, test l

25、aboratories and users of apparatus to adopt a consistent approach to, and provide a framework for, the assessment of performance criteria. It is the manufacturers primary responsibility to ensure that the apparatus meets the requirements laid down in this European Standard including environmental in

26、fluences which can be expected to affect performance. Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours generate readings in clean air (zero readings) which vary with environmental conditions and time. This standard therefore also incl

27、udes test methods and requirements for acceptable variations in zero readings. BS EN 45544-3:2015EN 45544-3:2015 (E) 5 1 Scope This European Standard specifies the performance requirements for electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and

28、vapours in workplace atmospheres. This European Standard is applicable to apparatus used for general gas detection. EXAMPLE Safety warning and leak detection are examples of general gas detection. 2 Normative references The following documents, in whole or in part, are normatively referenced in this

29、 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. EN 45544-1:2015, Workplace atmospheres - Electrical apparatus used for the direct detec

30、tion and direct concentration measurement of toxic gases and vapours - Part 1: General requirements and test methods EN 50270, Electromagnetic compatibility - Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen EN 50271, Electrical apparatus for the det

31、ection and measurement of combustible gases, toxic gases or oxygen - Requirements and tests for apparatus using software and/or digital technologies 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 45544-1:2015 apply. 4 General requirements Unless othe

32、rwise stated, the apparatus shall conform to the general requirements of EN 45544-1:2015, Clause 4 and these requirements shall be verified by visual inspection and by tests according to EN 45544-1:2015, 5.2.5. 5 Performance requirements 5.1 General The apparatus shall be tested in accordance with r

33、EN 45544-1:2015, Clause 5. A test report shall be prepared in accordance with EN 45544-1:2015, Clause 7. 5.2 Standard requirements The performance requirements referred to in 5.5 to 5.9 shall be as specified below: a) the deviation of the measured values in clean air shall be less than or equal to 1

34、0 % of the measuring range. BS EN 45544-3:2015EN 45544-3:2015 (E) 6 b) the deviation of the measured values in standard test gas shall be less than or equal to 20 % of the measured value. 5.3 Unpowered storage All apparatus shall meet the relevant requirements of 5.4 to 5.9 after storage. 5.4 Calibr

35、ation curve Each measured value shall not differ from the volume fraction of the test gas by more than 20 % of the measured value or 10 % of the measuring range, whichever is the greater. 5.5 Mechanical tests 5.5.1 Vibration During the vibration test, the apparatus shall not suffer any loss of funct

36、ion nor give any false alarm or fault signal. The apparatus shall not suffer damage resulting in hazard or loss of function. The performance requirements as specified in 5.2a and 5.2b shall be met. 5.5.2 Drop test The apparatus shall not suffer damage resulting in hazard or loss of function. The app

37、aratus shall remain in the measuring mode during and after the test. The performance requirements shall be as stated in 5.2a and 5.2b. EXAMPLE Alarm devices, pump function, controls or display can lose function. 5.6 Environmental tests 5.6.1 Temperature The deviation of the measured values at all te

38、mperatures from that at 20 C shall be in accordance with 5.2a and 5.2b. 5.6.2 Pressure The deviation of the measured values in clean air at all pressures from that at 100 kPa shall be in accordance with 5.2a. The deviation of the measured values in standard test gas at all pressures from that at 100

39、 kPa shall be less than 35 %. 5.6.3 Humidity The deviation of the measured values at any relative humidity from that at adjustment shall be in accordance with 5.2a and 5.2b. 5.6.4 Air velocity The deviation of the measured values at any velocity from that under conditions of no forced ventilation sh

40、all be in accordance with 5.2a and 5.2b. BS EN 45544-3:2015EN 45544-3:2015 (E) 7 5.7 Performance tests 5.7.1 Alarm set point(s) The alarm shall be activated by the test gas at each set point within t90. 5.7.2 Time to alarm or alarm reading The time to alarm or alarm reading shall not be greater than

41、 20 s for temperatures at and above 5 C and 30 s for temperatures below 5 C. 5.7.3 Flow rate The low flow signal shall be activated. The performance requirements specified in 5.2b shall be met. 5.7.4 Warm-up time The performance requirements specified in 5.2a and 5.2b shall be met. 5.7.5 Time of res

42、ponse The response time t90shall not exceed 150 s. The response time t50shall not exceed 60 s. For apparatus equipped with a sample line or a probe, 3 s per metre length of sample line or probe shall be added to these values. 5.7.6 Time of recovery The recovery time t10shall not exceed 300 s. The re

43、covery time t50shall not exceed 60 s. For apparatus equipped with a sample line or a probe, 3 s per metre length of sample line or probe shall be added to these values. 5.7.7 Addition of sampling probe (portable and transportable apparatus only) The performance requirements specified in 5.2a and 5.2

44、b shall be met. 5.7.8 Field calibration kit The performance requirements specified in 5.2a and 5.2b shall be met. 5.7.9 Gas concentrations above the full scale indication The performance requirements specified in 5.2a and 5.2b shall be met. All gas concentrations above full scale indication shall re

45、sult in an over-range indication and, where fitted, an alarm. 5.7.10 Extended operation in test gas The performance requirements specified in 5.2a and 5.2b shall be met. BS EN 45544-3:2015EN 45544-3:2015 (E) 8 5.7.11 Orientation tests The performance requirements specified in 5.2a and 5.2b shall be

46、met. 5.8 Electrical tests 5.8.1 Battery capacity The performance requirements specified in 5.2a and 5.2b shall be met. The low battery indication shall be activated. 5.8.2 Power supply variations The performance requirements specified in 5.2a and 5.2b shall be met. No false alarm shall be activated.

47、 All output functions shall operate correctly. 5.8.3 Electromagnetic compatibility The apparatus shall conform to EN 50270. 5.8.4 Time-weighted average (TWA) function The mean percentage shall be between 45 % and 55 % of the standard test gas volume fraction. The TWA alarm shall activate when (50 5)

48、 % of the TWA period has elapsed. 5.9 Stability The performance requirements specified in 5.2a and 5.2b shall be met. 5.10 Verification of software and digital components The apparatus shall conform to EN 50271. BS EN 45544-3:2015EN 45544-3:2015 (E) 9 Annex A (informative) Table of significant chang

49、es in comparison to EN 45544-3:1999 Type Minor and editorial changes Extension Substantial change Title change X Introduction modified: Titles of Part 2 EN 45544-2 and Part 3 EN 45544-3 changed. Change in intended use of EN 45544-3 apparatus: EN 45544-3 details performance requirements for general gas detection apparatus, e.g. safety warning, leak detection. X Modification of the scope: EN 45544-3 is applicable to apparatus used for general gas detection. X Normative references: EN 50271 added. X Performance requirements modified: 5.2 Standa