Ultrasonic domestic gas meters

This European Standard specifies requirements and tests for the construction, performance and safety of class 1,0 and class 1,5 battery powered ultrasonic gas meters (hereinafter referred to as meters), having co-axial single pipe, or two pipe connections, used to measure volumes of distributed fuel gases of the second and/or third family, as given in EN 437, at maximum working pressures not exceeding 0,5 bar ) and maximum actual flow rates of up to 10 m3/h over a minimum ambient temperature range of -10 °C to +40 °C, and minimum gas temperature span of 40 K, for domestic applications. This European Standard applies to meters where the measuring element and the register(s) are enclosed in the same case.
This European Standard applies to meters with and without built-in temperature conversion, that are installed in locations with vibration and shocks of low significance and in
   closed locations (indoor or outdoor with protection as specified by the manufacturer) with condensing or with non-condensing humidity
   or, if specified by the manufacturer,
   open locations (outdoor without any covering) with condensing humidity or with non-condensing humidity
and in locations with electromagnetic disturbances.
Unless otherwise stated, all pressures given in this European Standard are gauge pressures.
When more than one meter type is submitted for testing, then each meter type is required to be tested against this European Standard.
Clauses 1 to 15 and Annex C are for design and type testing only.
NOTE   See Annex A for production requirements.

Ultraschall-Haushaltsgaszähler

Diese Europäische Norm beschreibt die Anforderungen und Prüfungen hinsichtlich der Konstruktion, Funktion und Sicherheit von nach Klasse 1,0 und Klasse 1,5 batteriebetriebenen Ultraschallgaszählern (im Folgenden Zähler genannt), die einen gleichachsigen Einstutzen- oder Zweistutzenanschluss aufweisen und zur Volumenmessung von verteilten Brenngasen der zweiten und/oder dritten Gasfamilie, wie in EN 437 angegeben, bei maximalen Betriebsdrücken bis zu 0,5 bar ) und maximalen tatsächlichen Durchflüssen bis zu 10 m3/h bei einem Mindestumgebungstemperaturbereich von -10 °C bis +40 °C und einer Mindestgastemperaturspanne von 40 K für Haushaltsanwendungen eingesetzt werden. Diese Europäische Norm gilt für Zähler, bei denen das Messelement und das/die Zählwerke im selben Gehäuse untergebracht sind.
Diese Europäische Norm gilt für Zähler mit und ohne eingebaute Temperaturumwertung, die an Aufstellungsorten, die in geringem Ausmaß Schwingungen und Erschütterungen ausgesetzt sind, und
   an geschlossenen Aufstellungsorten (in Gebäuden oder im Freien mit vom Hersteller vorgeschriebenem Schutz) mit Betauung oder mit betauungsfreier Feuchte,
   oder, falls vom Hersteller angegeben,
   an offenen Aufstellungsorten (im Freien ohne Abdeckung) mit Betauung oder mit betauungsfreier Feuchte
und an Aufstellungsorten mit elektromagnetischen Störungen aufgestellt sind.
Soweit nicht anders angegeben, handelt es sich bei allen in dieser Europäischen Norm verwendeten Drücken um Überdrücke.
Wenn mehr als ein Zählertyp zur Prüfung eingereicht wird, ist es notwendig, jeden Zählertyp gegen diese Europäische Norm zu prüfen.
Die Abschnitte 1 bis 15 und Anhang C gelten nur für Bauart und Typprüfung.
ANMERKUNG   Siehe Anhang A für Produktionsanforderungen.

Compteurs de gaz domestiques à ultrasons

Ultrazvočni plinomeri za gospodinjstva

General Information

Status
Withdrawn
Publication Date
23-Jan-2007
Withdrawal Date
02-Oct-2018
Current Stage
9960 - Withdrawal effective - Withdrawal
Completion Date
03-Oct-2018

RELATIONS

Effective Date
22-Dec-2008
Effective Date
10-Oct-2018
Effective Date
01-Feb-2017

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Standard
EN 14236:2007
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Ultrasonic domestic gas metersCompteurs de gaz domestiques a ultrasonsUltraschall-HaushaltsgaszählerTa slovenski standard je istoveten z:EN 14236:2007SIST EN 14236:2007en,fr,de91.140.40Sistemi za oskrbo s plinomGas supply systemsICS:SIST ENV 14236:20041DGRPHãþDSLOVENSKI

STANDARDSIST EN 14236:200701-september-2007

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14236January 2007ICS 91.140.40Supersedes ENV 14236:2002

English VersionUltrasonic domestic gas metersCompteurs de gaz domestiques à ultrasonsUltraschall-HaushaltsgaszählerThis European Standard was approved by CEN on 13 December 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36

B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14236:2007: E

EN 14236:2007 (E) 2 Contents Page Foreword................................................................................................................................................7 1 Scope.........................................................................................................................................8 2 Normative references..............................................................................................................8 3 Terms, definitions and symbols...........................................................................................10 3.1 Terms and definitions............................................................................................................10 3.2 Symbols..................................................................................................................................13 4 Normal operating conditions................................................................................................14 4.1 Flow range..............................................................................................................................14 4.2 Maximum working pressure.................................................................................................15 4.3 Temperature range.................................................................................................................15 4.4 Range of gases.......................................................................................................................16 4.4.1 Test gases...............................................................................................................................16 4.5 Orientation..............................................................................................................................16 5 Metrological performance.....................................................................................................16 5.1 General....................................................................................................................................16 5.2 Mode comparison..................................................................................................................17 5.2.1 General....................................................................................................................................17 5.2.2 Requirements.........................................................................................................................17 5.2.3 Test..........................................................................................................................................17 5.3 Permissible errors..................................................................................................................17 5.3.1 Requirements.........................................................................................................................17 5.3.2 Test..........................................................................................................................................17 5.4 Gas — air relationship...........................................................................................................18 5.4.1 General....................................................................................................................................18 5.4.2 Requirements.........................................................................................................................18 5.4.3 Test..........................................................................................................................................19 5.5 Pressure absorption..............................................................................................................19 5.5.1 Requirements.........................................................................................................................19 5.5.2 Test..........................................................................................................................................19 5.6 Metrological stability.............................................................................................................20 5.6.1 Requirements.........................................................................................................................20 5.6.2 Test..........................................................................................................................................20 5.7 Immunity to contaminants in gas stream............................................................................20 5.7.1 Requirements.........................................................................................................................20 5.7.2 Test..........................................................................................................................................20 5.7.3 Specification of contamination dust....................................................................................22 5.8 Installation effects..................................................................................................................22 5.8.1 Requirements.........................................................................................................................22 5.8.2 Test..........................................................................................................................................22 5.9 Zero flow.................................................................................................................................22 5.9.1 Requirements.........................................................................................................................22 5.9.2 Test..........................................................................................................................................22 5.10 Reverse flow...........................................................................................................................23 5.10.1 Requirements.........................................................................................................................23 5.10.2 Test..........................................................................................................................................23 5.11 Low flow registration.............................................................................................................23 5.11.1 Requirement...........................................................................................................................23 5.11.2 Test..........................................................................................................................................23 5.12 High flow registration............................................................................................................23

EN 14236:2007 (E) 3 5.12.1 Requirement...........................................................................................................................23 5.12.2 Test..........................................................................................................................................23 5.13 Pulsed (unsteady) flow..........................................................................................................23 5.13.1 General....................................................................................................................................23 5.13.2 Requirements.........................................................................................................................24 5.13.3 Test..........................................................................................................................................24 5.14 Temperature sensitivity.........................................................................................................25 5.14.1 Requirements.........................................................................................................................25 5.14.2 Test..........................................................................................................................................25 6 Construction and materials..................................................................................................25 6.1 General....................................................................................................................................25 6.2 Robustness of meter case....................................................................................................26 6.2.1 General....................................................................................................................................26 6.2.2 Protection against penetration of dust and water..............................................................26 6.2.3 Resistance to internal pressure...........................................................................................26 6.2.4 External leak tightness..........................................................................................................26 6.2.5 Heat resistance.......................................................................................................................27 6.2.6 Connections...........................................................................................................................27 6.2.7 Resistance to vibration..........................................................................................................30 6.2.8 Resistance to impact.............................................................................................................32 6.2.9 Resistance to mishandling...................................................................................................34 6.3 Corrosion protection.............................................................................................................35 6.3.1 General....................................................................................................................................35 6.3.2 Protection against external corrosion for material which is not corrosion resistant.....35 6.3.3 Protection against external corrosion for corrosion resistant material...........................37 6.3.4 Protection against internal corrosion for material which is not corrosion resistant.....38 6.3.5 Protection against internal corrosion for corrosion resistant material...........................40 6.4 Casework decorative finish..................................................................................................40 6.4.1 Scratch test.............................................................................................................................40 6.4.2 Humidity..................................................................................................................................41 6.5 Ageing of non-metallic casework.........................................................................................41 6.5.1 Requirements.........................................................................................................................41 6.5.2 Test..........................................................................................................................................41 6.6 Ageing of external surfaces of the meter, including index windows and adhesion of the index window...............................................................................................................41 6.6.1 Requirements.........................................................................................................................41 6.6.2 Test..........................................................................................................................................42 6.7 Protection against solar radiation........................................................................................42 6.7.1 Requirements.........................................................................................................................42 6.7.2 Test..........................................................................................................................................42 6.8 Resistance to external humidity...........................................................................................42 6.8.1 Requirements.........................................................................................................................42 6.8.2 Test..........................................................................................................................................43 6.9 Flame retardance of external surfaces................................................................................43 6.9.1 Requirements.........................................................................................................................43 6.9.2 Test..........................................................................................................................................43 6.10 Resistance to storage temperature range...........................................................................43 6.10.1 Requirement...........................................................................................................................43 6.10.2 Test..........................................................................................................................................43 6.11 Resistance to the effects of toluene/iso-octane vapour....................................................44 6.11.1 Requirements.........................................................................................................................44 6.11.2 Test..........................................................................................................................................44 6.12 Resistance to water vapour..................................................................................................47 6.12.1 Requirements.........................................................................................................................47 6.12.2 Test..........................................................................................................................................47 6.13 Ageing.....................................................................................................................................48 6.13.1 Requirements.........................................................................................................................48 6.13.2 Test..........................................................................................................................................49

EN 14236:2007 (E) 4 7 Optional features....................................................................................................................49 7.1 Pressure measuring point.....................................................................................................49 7.1.1 Requirements.........................................................................................................................49 7.1.2 Test..........................................................................................................................................49 7.2 Resistance to high ambient temperature............................................................................49 7.2.1 Requirements.........................................................................................................................49 7.2.2 Test..........................................................................................................................................50 7.2.3 Meter fitted with a thermal shut-off valve............................................................................51 7.3 Meters with temperature conversion...................................................................................51 7.4 Ancillary devices (if fitted)....................................................................................................51 7.4.1 Requirement...........................................................................................................................51 7.4.2 Test..........................................................................................................................................52 7.5 Use in hazardous zones........................................................................................................52 8 Index........................................................................................................................................52 8.1 Recording and storage..........................................................................................................52 8.1.1 Requirement...........................................................................................................................52 8.1.2 Test..........................................................................................................................................52 8.2 Display.....................................................................................................................................52 8.2.1 Requirement...........................................................................................................................52 8.2.2 Test..........................................................................................................................................52 8.3 Segmental display..................................................................................................................53 8.3.1 Requirements.........................................................................................................................53 8.3.2 Test..........................................................................................................................................53 8.4 Non-volatile memory..............................................................................................................53 8.4.1 Requirements.........................................................................................................................53 8.4.2 Test..........................................................................................................................................53 8.5 Display reset...........................................................................................................................54 8.5.1 Requirements.........................................................................................................................54 8.5.2 Test..........................................................................................................................................54 9 Marking...................................................................................................................................54 9.1 All meters................................................................................................................................54 9.2 Two-pipe meters.....................................................................................................................55 9.2.1 Requirements.........................................................................................................................55 9.2.2 Test..........................................................................................................................................55 9.3 Durability and legibility of marking......................................................................................55 9.3.1 Requirements.........................................................................................................................55 9.3.2 Weathering..............................................................................................................................55 9.3.3 Indelibility test........................................................................................................................56 9.4 Accompanying information..................................................................................................56 10 Software..................................................................................................................................57 10.1 Requirements.........................................................................................................................57 10.2 Test..........................................................................................................................................57 11 Communications....................................................................................................................57 11.1 General....................................................................................................................................57 11.2 Character transmission.........................................................................................................58 11.3 Communications protocol.....................................................................................................58 11.3.1 General....................................................................................................................................58 11.3.2 Wakeup...................................................................................................................................58 11.3.3 Sign-off....................................................................................................................................58 11.3.4 Security...................................................................................................................................58 11.3.5 Time-outs................................................................................................................................58 11.4 Data..........................................................................................................................................58 11.4.1 General....................................................................................................................................58 11.4.2 Data read-out mode...............................................................................................................59 11.5 Test-mode...............................................................................................................................59 11.5.1 General....................................................................................................................................59 11.5.2 Test-mode commands...........................................................................................................59

EN 14236:2007 (E) 5 11.5.3 Response of meter to test commands.................................................................................59 11.6 Data optical port.....................................................................................................................61 11.7 Galvanic port (optional).........................................................................................................61 11.8 Diagnostics.............................................................................................................................61 11.8.1 General....................................................................................................................................61 11.8.2 Displayed flags.......................................................................................................................61 12 Battery.....................................................................................................................................62 12.1 General....................................................................................................................................62 12.2 Voltage interruptions.............................................................................................................62 12.2.1 Requirements.........................................................................................................................62 12.2.2 Test..........................................................................................................................................62 12.3 Minimum operating voltage..................................................................................................63 12.3.1 Requirements.........................................................................................................................63 12.3.2 Test..........................................................................................................................................63 12.4 Battery life...............................................................................................................................63 12.4.1 Requirements.........................................................................................................................63 12.4.2 Test..........................................................................................................................................63 13 Immunity to electromagnetic disturbances.........................................................................63 13.1 General....................................................................................................................................63 13.2 Electrostatic discharge..........................................................................................................63 13.2.1 Requirements.........................................................................................................................63 13.2.2 Test..........................................................................................................................................63 13.3 Radio frequency electromagnetic field................................................................................64 13.3.1 Requirements.........................................................................................................................64 13.3.2 Test..........................................................................................................................................64 13.4 Electromagnetic induction (power frequency)...................................................................64 13.4.1 Requirements.........................................................................................................................64 13.4.2 Test..........................................................................................................................................65 13.5 Electromagnetic induction (pulsed field)............................................................................65 13.5.1 Requirements.........................................................................................................................65 13.5.2 Test..........................................................................................................................................65 13.6 Radio interference suppression...........................................................................................65 13.6.1 Requirements.........................................................................................................................65 13.6.2 Test..........................................................................................................................................65 14 Ultrasonic (acoustic) noise interference......................................................

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