1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 1854:2010Pressure sensing devices forgas burners and gas burningappliancesBS EN 1854:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of
2、 EN 1854:2010. The UK participation in its preparation was entrusted to TechnicalCommittee GSE/22, Safety and control devices for gas and oil burners and gas burning appliances.A list of organizations represented on this committee can beobtained on request to its secretary.EN 1854:2010 is a candidat
3、e “harmonized” European Standard and fully takes into account the requirements of the European Commission mandate M/BC/CEN/89/6, Appliances burning gaseous fuels, given under the New Approach Directive (2009/142/EC), and is intended to lead to CE marking. The date of applicability of EN 1854:2010 as
4、 a “harmonized” European Standard, i.e. the date after which this standard may be used for CE marking purposes, is subject to an announcement in the Official Journal of the European Communities.EN 1854:2010 is the subject of transitional arrangements agreed under the European Commission mandate. The
5、 Member States have agreed a nominal transition period for the co-existence of EN 1854:2010 and their corresponding national standard(s). It is intended that this period will comprise a nominal nine month period during which any required changes to national regulations are to be made, followed by a
6、further nominal twelve month period for the implementation of CE marking. At the end of this co-existence period, the national standard(s) will be withdrawn. In the UK, the corresponding national standard is: BS EN 1854:2006, Pressure sensing devices for gas burners and gas burning appliances;and ba
7、sed on this nominal transition period of twentyone months, BS EN 1854:2006 will be withdrawn on 31 May, 2012. NOTE: This date is approximate. Users of this standard should contact BSI Customer Services for confirmation of withdrawal.This publication does not purport to include all the necessaryprovi
8、sions of a contract. Users are responsible for its correctapplication. BSI 2010 ISBN 978 0 580 62779 8 ICS 23.060.40 Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee o
9、n 31 August 2010. Amendments issued since publicationDate Text affectedBS EN 1854:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1854 May 2010 ICS 23.060.40 Supersedes EN 1854:2006English Version Pressure sensing devices for gas burners and gas burning appliances Dispositifs de surveillanc
10、e de pression pour brleurs gaz et appareils gaz Druckwchter fr Gasbrenner und Gasgerte This European Standard was approved by CEN on 15 April 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of
11、 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 Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A vers
12、ion in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Rep
13、ublic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN D
14、E NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1854:2010: EBS EN 1854:2010EN 1854:2010 (E) 2 Contents Page Foreword . 41 Scop
15、e 52 Normative references . 53 Terms and definitions . 54 Classification . 105 Units of measurement and test conditions 116 Construction requirements 117 Performance 178 EMC/Electrical requirements . 289 Marking, installation and operating instructions . 30Annex A (informative) Gas connections in co
16、mmon use in the various countries . 33Annex B (informative) Leak-tightness test volumetric method 34Annex C (informative) Leak-tightness test pressure loss method . 35Annex D (informative) Conversion of pressure loss into leakage rate . 36Annex E (normative) Electrical/electronic component fault mod
17、es 37Annex F (normative) Additional requirements for safety accessories and pressure accessories as defined in EU Directive 97/23/EC . 38Annex G (normative) Materials for pressurized parts . 39Annex H (informative) Additional materials for pressurized parts 40Annex I (normative) Requirements for con
18、trols used in DC supplied gas burners and gas burning appliances 41Annex AA (informative) Manufacturers declaration for EPSDs . 42Annex ZA (informative) Clauses of this European Standard addressing requirements or provisions of EU-Directives 43Bibliography . 45Figures Figure 1 Differential PSD 6Figu
19、re 2 Atmospheric PSD . 6Figure 3 Absolute PSD 6Figure 4 EPSD 7Figure 5 Step response of EPSD 8Figure 6 Clarification of definitions for PSD-M and PSD-S . 9BS EN 1854:2010EN 1854:2010 (E) 3 Figure 7 Clarification of definitions for EPSD 10Tables Table 1 Maximum external leakage rates for air/combusti
20、on products 18Table 2 Number of cycles PSD-M and PSD-S . 27Table E.1 Electrical/electronic component faults modes 37Table AA.1 Sensor measurement: Pressure. 42Table ZA.1 Correspondence between this European Standard and Directive (Directive 2009/142/EC relating to appliances burning gaseous fuels) 4
21、3BS EN 1854:2010EN 1854:2010 (E) 4 Foreword This document (EN 1854:2010) has been prepared by Technical Committee CEN/TC 58 “Safety and control devices for burners and appliances burning gaseous or liquid fuels”, the secretariat of which is held by BSI. This European Standard shall be given the stat
22、us of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2010, and conflicting national standards shall be withdrawn at the latest by May 2012. Attention is drawn to the possibility that some of the elements of this document may be the subjec
23、t of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1854:2006. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports ess
24、ential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. This European Standard refers to clauses of EN 13611:2007 or adapts it by stating “with the following modification“, “with the following addition“, “is
25、 replaced by the following“ or “is not applicable“ in the corresponding clause. This European Standard adds clauses or subclauses to the structure of EN 13611:2007 which are particular to this European Standard. It should be noted that these clauses and subclauses are not indicated as an addition. I
26、t should be noted that the following significant technical changes compared to the previous edition have been incorporated in this revised European Standard: a) the scope introduces a new declaration concerning the maximum inlet pressure covered by the revised standard; b) incorporation of the requi
27、rements and tests for electronic pressure sensing devices (EPSDs); c) alignment with EN 13611:2007; d) updating of definitions and normative references. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Euro
28、pean Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and t
29、he United Kingdom. BS EN 1854:2010EN 1854:2010 (E) 5 1 Scope This European Standard specifies the safety, construction and performance requirements for pressure sensing devices. This European Standard covers type testing only. It applies to pressure sensing devices for the measurement of pressures o
30、f combustible gases of the first, second and third families, air, combustion products for maximum inlet pressures up to 500 kPa (5 bar). It applies to all types of pressure sensing devices, including electronic, differential and inferential types. It specifies requirements for pressure sensing devic
31、es which are intended to be applied to steam boilers and as such need to meet increased reliability requirements. These devices are classified as PSD-S in this European Standard. 2 Normative references The following referenced documents are indispensable for the application of this document. For dat
32、ed references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 13611:2007, Safety and control devices for gas burners and gas burning appliances General requirements EN 60529:1991, Degrees of protection prov
33、ided by enclosures (IP code) (IEC 60529:1989) EN 60730-2-6:2008, Automatic electrical controls for household and similar use Part 2-6: Particular requirements for automatic electrical pressure sensing controls including mechanical requirements (IEC 60730-2-6:2007, modified) EN 61058-1:2002, Switches
34、 for appliances Part 1: General requirements (IEC 61058-1:2000 + A1:2001, modified) EN 175301-803, Detail Specification: Rectangular connectors Flat contacts, 0,8 mm thickness, locking screw not detachable EN ISO 75 (all parts), Plastics Determination of temperature of deflection under load IEC 6073
35、0-1:2007, Automatic electrical controls for household and similar use Part 1: General requirements 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13611:2007 and the following apply. 3.101 pressure sensing device PSD device which senses pressure and p
36、rovides a signal NOTE Different types of PSDs are given in Figures 1 to 3. BS EN 1854:2010EN 1854:2010 (E) 6 Key 1 sensing element 2 inlet 1 3 inlet 2/reference Figure 1 Differential PSD Key 1 sensing element 2 inlet 1 3 reference Figure 2 Atmospheric PSD Key 1 sensing element 2 inlet 1 Figure 3 Abs
37、olute PSD 3.102 set point pressure to which the PSD is adjusted to operate 3.103 switching pressure inlet pressure at which the PSD operates 3.104 set point range declared range of adjustment of the PSD between the highest and lowest set points 3.105 upper switching pressure pressure at which the PS
38、D operates during an increase in pressure 3.106 lower switching pressure pressure at which the PSD operates during a decrease in pressure 3.107 electronic pressure sensing device EPSD assembly of electronic based pressure sensing element and signal conditioner NOTE Figure 4, clarifies the EPSD. BS E
39、N 1854:2010EN 1854:2010 (E) 7 Key 1 EPSD 2 Central Unit 3 Electronic pressure sensing element 4 Signal Conditioner 5 Interface 6 Switching Figure 4 EPSD 3.108 electronic pressure sensing element part of the EPSD, which transforms the signal to be sensed (e.g. pressure) to another physical value (e.g
40、. force, voltage) 3.109 signal conditioner transforms the signal from the sensing element into the output signal of the EPSD NOTE The signal conditioner may consist of functional electronics as well as electronics which cause the sensor output to be classified as class B or C in accordance with EN 1
41、3611:2007. 3.110 response time time counted from start of the step change input signal (e.g. pressure) until the output signal (e.g. voltage, current) is within the settling tolerance for the first time NOTE For further information refer to Figure 5. BS EN 1854:2010EN 1854:2010 (E) 8 Key 1 step func
42、tion (y1) 2 step response (y2) 3 overshoot value 4 settling tolerance 5 steady state value 6 response time 7settling time t time Figure 5 Step response of EPSD 3.111 step response output signal change of a device having a step change input signal 3.112 steady state value value of the output signal a
43、fter step response input remains constant 3.113 settling tolerance difference between the current output signal and its steady state value declared by the manufacturer 3.114 settling time time counted from start of the step change input signal until the output signal remains within the settling tole
44、rance 3.115 overshoot value biggest deviation between the output signal and its steady state value after step change of the inlet signal exceeding the settling tolerance for the first time 3.116 withstand pressure pressure that is withstood without degraded characteristic after returning below the m
45、aximum inlet pressure NOTE The withstand pressure can be equal to maximum inlet pressure. 3.117 deviation difference between the declared or indicated set point and the pressure measured before the endurance test BS EN 1854:2010EN 1854:2010 (E) 9 3.118 drift difference between the switching pressure
46、s, or in case of EPSD the positive or negative shift of the sensor characteristic, measured before and after the endurance test NOTE For illustration refer to Figure 7. 3.119 repeatability ability of a system to provide similar output for repeated operation 3.120 hysteresis greatest differences betw
47、een the upscale and downscale output readings or upper and lower switching pressure at one point NOTE Clarification of the hysteresis in reference to other definitions of PSDs is given in Figure 6 and 7. Key1 minimum inlet pressure 2 maximum inlet pressure 3 withstand pressure 4 set point 5 switchin
48、g pressure (before endurance) 6 switching pressure (after endurance) 7 deviation 8 drift 9 hysteresis 10 lowest set point 11 highest set point 12 set point range X P-inlet/P-differential Figure 6 Clarification of definitions for PSD-M and PSD-S BS EN 1854:2010EN 1854:2010 (E) 10 a) Clarifications of
49、 hysteresis, maximum inlet and withstand pressure b) Clarifications of drift, transfer ratio, linearity and offset Key 1 hysteresis 2 maximum inlet pressure 3 withstand pressure X P-inlet/P-differential Y output signal Key 1 drift 2 transfer ratio 3 linearity 4 offset X pressure Y output signal Figure 7 Clarification of definitions for EPSD 3.121 transfer ratio positive or negative rotation of the sensor characteristic
