EN 16314:2013
(Main)Gas meters - Additional functionalities
Gas meters - Additional functionalities
This European Standard specifies the additional requirements and tests for gas meters with a maximum capacity of 40 m3/h and a maximum operating pressure of not exceeding 500 mbar, conforming to EN 1359, EN 12261, EN 12480, EN 12405 and EN 14236, which have battery powered devices providing additional functionalities that form part of the gas meter (hereafter referred to as meter) or contained in an Additional Functionality Device (AFD). It also covers the additional requirements when an electronic index is used rather that a mechanical one. Where the option of an integral valve to the meter is specified, this standard only gives requirements for meters having a maximum capacity not exceeding 10 m3/h.
This European Standard is applicable to first, second and third family gases according to EN 437.
This European Standard specifies the construction requirements for electronic components but communication protocols are dealt within other European Standards, e.g. appropriate parts of EN 13757.
NOTE This European Standard covers connections to auxiliary devices but not the requirements for these devices.
This European Standard applies to AFDs 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,
- locations liable to temporary saturation,
and in locations with electromagnetic disturbances corresponding to those likely to be found in residential, commercial buildings or similar buildings.
This European Standard does not cover the changing of metrological software within the meter or the upload/download of metrological software.
This European Standard only covers valves integral to the meter.
Gaszähler - Zusatzfunktionen
Diese Norm beschreibt die Zusatzanforderungen und -prüfungen für Gaszähler mit einer maximalen Leistung von 40 m3/h und einem maximalen Betriebsdruck von 500 mbar, in Übereinstimmung mit EN 1359, EN 12261, EN 12480, EN 12405 und EN 14236, die mit einem batteriebetriebenen Gerät mit Zusatzfunktionen ausge¬rüstet sind, welche entweder einen Teil des Gaszählers (im Folgenden „Zähler“ genannt) bilden oder in einem Zusatzfunktionsgerät enthalten sind. Sie beschreibt ebenfalls die zusätzlichen Anforderungen, wenn statt eines mechanischen Zählwerks ein elektronisches verwendet wird. Wo die Alternative eines fest eingebauten Ven¬tils beschrieben ist, liefert diese Norm lediglich Anforderungen für Gaszähler, die eine maximale Leistung von 10 m3/h haben.
Dieses Dokument gilt für Gase der 1., 2. und 3. Gasfamilie in Übereinstimmung mit der EN 437.
Diese Europäische Norm legt die Bauanforderungen für elektronische Bauelemente fest; Kommunikations-protokolle werden hingegen in anderen Europäischen Normen behandelt, z. B. EN 13757.
ANMERKUNG Diese Europäische Norm behandelt Anschlüsse an Zusatzgeräte, aber nicht die Anforderungen an diese Geräte.
Diese Norm gilt für ZFGs, die an Einsatzorten aufgestellt sind, an denen sie geringfügigen Erschütterungen und Stößen ausgesetzt sind, und für solche an:
geschlossenen Aufstellungsorten (in Innenräumen oder im Freien, mit vom Hersteller vorgeschriebenem Schutz) mit kondensierender oder nicht kondensierender Feuchtigkeit;
oder, falls vom Hersteller angegeben:
an offenen Aufstellungsorten (im Freien ohne Abdeckung) mit kondensierender Feuchtigkeit oder mit nicht-kondensierender Feuchtigkeit;
Aufstellungsorten, die einer vorübergehenden Sättigung unterliegen;
oder an Aufstellungsorten, an denen elektromagnetische Störungen wie in anderen Wohn-, Geschäfts- oder ähnlichen Gebäuden auftreten können.
Diese Europäische Norm behandelt nicht das Auswechseln der messtechnischen Software im Zähler oder das Hochladen/Herunterladen von messtechnischer Software.
Diese Europäische Norm behandelt nur Ventile, die im Zähler eingebaut sind.
Compteurs à gaz - Fonctionnalités supplémentaires
La présente Norme européenne précise les conditions et les essais supplémentaires pour les compteurs à gaz avec un débit maximal de 40 m3/h et une pression de service n’excédant pas 500 mbar, conformes aux EN 1359, EN 12261, EN 12480, EN 12405 et EN 14236, qui ont des dispositifs fonctionnant sur batterie et fournissant des fonctionnalités supplémentaires faisant partie intégrante du compteur de gaz (ci-après dénommé compteur) ou incluses dans un « Additional Fonctionality Device » (dispositif de fonctionnalité supplémentaire) (AFD). Elle couvre aussi les besoins supplémentaires quand l’index mécanique du compteur de base est remplacé par un index électronique. Lorsque l’option d’une vanne intégrée au compteur est spécifiée, cette norme donne les exigences seulement pour les compteurs de capacité n’excédant pas 10 m3/h.
La présente Norme européenne est applicable aux première, deuxième et troisième familles de gaz selon l’EN 437.
La présente Norme européenne précise les exigences de fabrication pour les composants électroniques mais les protocoles de communication sont traités par d’autres Normes européennes, par exemple les parties appropriées de l’EN 1 3757.
NOTE La présente Norme européenne couvre les raccordements aux dispositifs annexes mais pas les prescriptions de ces dispositifs.
La présente Norme européenne s’applique aux AFD installés dans des sites avec des vibrations et des chocs de faible importance et dans des :
- sites fermés (intérieurs ou extérieurs avec une protection comme spécifié par le fabricant) avec une humidité condensante ou non condensante;
ou, si spécifié par le fabricant :
- des sites ouverts (extérieurs sans couverture) avec humidité condensante ou non condensante ;
- des sites présentant un risque de saturation temporaire,
et dans des sites soumis à des perturbations électromagnétiques susceptibles d’être rencontrées dans les bâtiments résidentiels, commerciaux ou similaires.
La présente Norme européenne ne couvre pas le changement de logiciel de métrologie dans le compteur ni le téléchargement d’un logiciel de métrologie.
La présente Norme européenne ne couvre que les vannes faisant partie intégrante du compteur.
Plinomeri - Dodatne funkcije
Ta evropski standard določa dodatne zahteve in preskuse za plinomere z največjo kapaciteto 40 m3/h, pri katerih največji obratovalni tlak ne preseže 500 mbar, v skladu s standardi EN 1359, EN 12261, EN 12480, EN 12405 in EN 14236, ki vsebujejo naprave, ki se napajajo prek baterij in zagotavljajo dodatne funkcije, ki so del plinomera (v nadaljevanju: merilniki), ali so zajete med napravami z dodatnimi funkcijami (AFD). Zajema tudi dodatne zahteve v primerih, ko je uporabljen elektronski indeks namesto mehanskega indeksa. Če je določena možnost z vgrajenim ventilom v merilniku, ta standard podaja le zahtevo, da največja kapaciteta merilnikov ne sme preseči 10 m3/h. Ta evropski standard se uporablja za pline prve, druge in tretje družine v skladu s standardom EN 437. Ta evropski standard določa konstrukcijske zahteve za elektronske komponente, komunikacijski protokoli pa so urejeni z drugimi evropskimi standardi, npr. z ustreznimi deli standarda EN 13757. Ta evropski standard se uporablja za naprave z dodatnimi funkcijami, ki so nameščene na mestih, kjer so prisotni tresljaji in udarci majhnega pomena in na: – zaprtih lokacijah (znotraj ali na prostem z zaščito, kot jo določa proizvajalec) s kondenzirano ali nekondenzirano vlago, ali, če je tako določil proizvajalec: – odprtih lokacijah (na prostem brez kakršnega koli prekrivala) s kondenzirano ali nekondenzirano vlago, – lokacijah, kjer lahko pride do začasnega nasičenja in lokacijah z elektromagnetnimi motnjami, ki ustrezajo običajnim motnjam v stanovanjskih, komercialnih ali podobnih zgradbah. Ta evropski standard ne zajema sprememb meroslovne programske opreme merilnika ali prenosa/nalaganja programske opreme merilnika. Ta evropski standard zajema samo ventile, vgrajene v merilniku.
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Plinomeri - Dodatne funkcijeGaszähler - ZusatzfunktionenCompteurs à gaz - Fonctionnalités supplémentairesGas meters - Additional functionalities91.140.40Sistemi za oskrbo s plinomGas supply systemsICS:Ta slovenski standard je istoveten z:EN 16314:2013SIST EN 16314:2013en,fr,de01-december-2013SIST EN 16314:2013SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16314
July 2013 ICS 91.140.40 English Version
Gas meters - Additional functionalities
Compteurs à gaz - Fonctionnalités supplémentaires
Gaszähler - Zusatzfunktionen This European Standard was approved by CEN on 18 April 2013.
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 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). 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, 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16314:2013: ESIST EN 16314:2013
Download software . 46 Annex B (informative)
Implementation method – Conformity to the SM-CG Additional Functionalities . 47 Annex C (normative)
Electronic index. 50 C.1 General . 50 C.2 Display . 50 C.3 Display reset . 50 C.4 Test signal . 51 C.5 Non-volatile memory . 51 C.6 Flags and alarms information . 52 C.7 Interfaces . 52 C.8 Ports. 52 C.9 Durability . 53 Annex D (normative)
Valve type test plan . 54 D.1 List of tests . 54 D.2 Endurance Test . 54 D.3 Toluene/iso-octane test . 54 D.4 Water Vapour Test . 57 D.5 Ageing Test. 59 Bibliography . 60
This European Standard has been drafted as part of the work being undertaken by the European Standards Organisations (CEN/CENELEC/ETSI) under the Commission Mandate M/441. This standard utilises the six functionalities agreed by the Smart Meters Coordination Group (SM-CG) (see Annex C) as the basis for its additional functionalities. It is not necessary for the Additional Functionality Device (AFD) to incorporate all functions. This standard builds on CEN/TR 16061 by providing specific requirements for the additional functionality that can be fitted to a gas meter.
This standard contains requirements for gas valves integral within the meters and controlled by an AFD where the capacity of the gas meter does not exceed 10 m3/h. Such gas valves are intended for interruption of the gas supply but do not replace any valve intended to isolate the gas supply. Communications for gas meters are outside the scope of this standard and are covered by the appropriate parts of EN 13757, which provide a number of protocols and transport layers for meter communications for Gas, Water and Heat meters. A number of methods can provide the additional functionality for gas meters: these are illustrated below, see Figure 1, and described in detail within this standard. The AFD can be integral to the gas meter, attached to the meter or remote from the meter. AFD1, AFD2 and AFD3Gas Meter+ AFD1 AdditionalFunctionsOther devices, e.g, Home displayGas MeterAFD2 AdditionalFunctionsOther devices, e.g, Home displayGas MeterAFD3 AdditionalFunctionsOther devices, e.g, Home displayIn scope Out of scope Figure 1 — Additional functionality device
This European Standard is applicable to first, second and third family gases according to EN 437.
This European Standard specifies the construction requirements for electronic components but communication protocols are dealt within other European Standards, e.g. appropriate parts of EN 13757. NOTE This European Standard covers connections to auxiliary devices but not the requirements for these devices. This European Standard applies to AFDs 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, — locations liable to temporary saturation,
and in locations with electromagnetic disturbances corresponding to those likely to be found in residential, commercial buildings or similar buildings. This European Standard does not cover the changing of metrological software within the meter or the upload/download of metrological software. This European Standard only covers valves integral to the meter. 2 Normative references The following documents, in whole or in part, are normatively referenced in this 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 1359, Gas meters — Diaphragm gas meters EN 12261, Gas meters — Turbine gas meters EN 12405-2, Gas meters — Conversion devices — Part 2: Energy conversion EN 12480, Gas meters — Rotary displacement gas meters EN 13611, Safety and control devices for gas burners and gas-burning appliances — General appliances EN 13757-1, Communication system for meters and remote reading of meters — Part 1: Data exchange EN 13757-2, Communication systems for remote reading of meters — Part 2: Physical and link layer SIST EN 16314:2013
EN 60079 (all parts), Explosive atmospheres
EN 60086-1, Primary batteries — Part 1: General
EN 60086-4, Primary batteries — Part 4: Safety of lithium batteries
EN 60529, Degrees of protection provided by enclosures (IP code) EN 60950-1, Information technology equipment — Safety — Part 1: General requirements EN 61000-4-2, Electromagnetic compatibility (EMC) — Part 4-2: Testing and measurement techniques — Electrostatic discharge immunity test EN 61000-4-3, Electromagnetic compatibility (EMC) — Part 4-3: Testing and measurement techniques — Radiated, radio-frequency, electromagnetic field immunity test EN 61000-4-4, Electromagnetic compatibility (EMC) — Part 4-4: Testing and measurement techniques — Electrical fast transient/burst immunity test EN 61000-4-5, Electromagnetic compatibility (EMC) — Part 4-5: Testing and measurement techniques — Surge immunity test EN 61000-4-6, Electromagnetic compatibility (EMC) — Part 4-6: Testing and measurement techniques — Immunity to conducted disturbances, induced by radio-frequency fields EN 61000-4-8, Electromagnetic compatibility (EMC) — Part 4-8: Testing and measurement techniques — Power frequency magnetic field immunity test EN 61000-4-9, Electromagnetic compatibility (EMC) — Part 4-9: Testing and measurement techniques — Pulse magnetic field immunity test EN 61000-6-1, Electromagnetic compatibility (EMC) — Part 6-1: Generic standards — Immunity for residential, commercial and light-industrial environments EN 61000-6-2, Electromagnetic compatibility (EMC) — Part 6-2: Generic standards — Immunity for industrial environments EN 61010-1, Safety requirements for electrical equipment for measurement, control, and laboratory use — Part 1: General requirements EN 62056-21, Electricity metering — Data exchange for meter reading, tariff and load control — Part 21: Direct local data exchange SIST EN 16314:2013
3.1.5 additional functionality device Type 2 factory or field fitted additional functionality directly attached to the meter 3.1.6 additional functionality device Type 3 field fitted additional functionality connected to the meter 3.1.7 meter instrument designed to measure, memorise and display the quantity of gas (volume or mass) that has passed it Note 1 to entry: A volume conversion device is a sub-assembly of a meter and therefore in this standard it is part of the meter. SIST EN 16314:2013
3.1.9 connector mechanical device, or pair of devices, that makes a semi-permanent circuit between the meter and a cable 3.1.10 universal time coordinated world time, without daylight savings 3.1.11 index current reading of the total volume (mass) passed through the meter 3.1.12 metrological software software identified during the type testing examination, which is part of the meter and is critical to its metrological characteristics 3.1.13 register electronic component which memorises the values of the meter and/or the AFD 3.1.14 maximum permissible error extreme value of measurement error, with respect to a known reference quantity value, permitted by specifications or regulations for a given measurement, measuring instrument, or measuring system 3.1.15 tariff price structure (normally comprising a set of one or more rates of charge) applied to the consumption of a product or service provided to a consumer
3.1.16 event condition requiring action or to log an action 3.1.17 display shows visual information in either numbers or text 3.2 Abbreviated terms Table 1 — Abbreviations AFD1 Additional functionality device Type 1 AFD2 Additional functionality device Type 2 AFD3 Additional functionality device Type 3 UTC Universal Time Coordinated MPE Maximum Permissible Error
The manufacturer of the AFD shall declare the conditions for compatibility with any interface and meters. 4.4 Types of additional functionality devices The additional functionality shall be provided by one of the following devices: a) AFD1, b) AFD2, c) AFD3. In the case of an AFD1, all functions shall be within the same casing as the meter. In the case of an AFD2, the AFD2 shall be directly attached to the meter.
In the case of an AFD3, the AFD3 shall be connected to the meter.
The fitting of the AFD to the meter shall not obstruct or obscure the metrological seal. The AFD shall be connected to the meter in accordance with the manufacturer's instructions during all tests specified in this standard. The index shall be easily read without the use of tools by the consumer and shall be unambiguously and boldly displayed within the index. SIST EN 16314:2013
d) There shall be the possibility to be able to apply a protective seal between the ADF and the meter. 4.6.2 Test a) Fit the AFD to the meter and undertake the relevant tests specified in Clauses 4 and 7. b) Examine the meter and AFD and ensure these results are identical to that on the meter. c) Verify the AFD is interoperable with those interfaces specified by the manufacturer. d) Examine the meter and AFD and ensure there is the possibility to apply a protective seal between the ADF and the meter. 4.7 AFD3 4.7.1 Requirements a) When tested in accordance with 4.7.2 a), the AFD shall have no influence on the metrological characteristics of the meter. b) If the AFD provides a facsimile of the meter’s results, it shall be tested in accordance with 4.7.2 b) to ensure these results are identical to that on the meter. c) The AFD manufacturer shall ensure interoperability and specify the types of interface with which it is compatible. 4.7.2 Test a) Fit the AFD to the meter in accordance with the AFD manufacturer's instructions and repeat the relevant tests specified Clauses 4 and 7. SIST EN 16314:2013
4.9 Climatic environments 4.9.1 General For an AFD1 and AFD2, the AFD shall be at least suitable for the same climatic requirements as the meter. This shall be achieved by fulfilling the requirements given in 4.9.2, 4.9.3, 4.9.4, 4.9.5 and 4.9.6. The AFD3 and any physical connection shall meet the requirements given in 4.9.2, 4.9.3, 4.9.5 and 4.9.6. 4.9.2 Closed location
4.9.2.1 Requirement All meters/AFDs shall meet this requirement. a) When tested in accordance with 4.9.2.2 a), the AFD shall meet the requirements of EN 60529 for an IP54 code. b) When tested in accordance with 4.9.2.2 b), the functions specified by the manufacturer of the meter/AFD shall be maintained and the index/register markings shall remain legible. 4.9.2.2 Test a) Test one meter/AFD in accordance with EN 60529 and confirm it is suitable for an IP54 code. b) Test one meter/AFD in accordance with EN ISO 6270-1 for a period of 120 h. Then check the functions of the AFD for correct operation, and ensure the index/register marking and information are legible.
4.9.3 Open location 4.9.3.1 General When the manufacturer declares that the meter/AFD is suitable for ‘Open locations’ it shall meet the following requirement and shall be marked in accordance with Clause 8. 4.9.3.2 Requirement a) When tested in accordance with 4.9.3.3 a), the AFD shall meet the requirements of EN 60529 for an IP65 code. b) When tested in accordance with 4.9.3.3 b), the functions specified by the manufacturer of the meter/AFD shall be maintained and the index/register markings shall remain legible. SIST EN 16314:2013
UVA 340 0,76 W(m-²•nm-1) at 340 mm (60 - 3) °C 4 h
condensation
light out (50 - 3) °C
Following exposure, the meter shall be visually inspected for legibility. All markings on the meter, the index and index plate when viewed through the index window and any separate data plate, if fitted, shall remain legible. Appropriate tests shall be carried out to check the requirements for colour difference and transmission of light are met. 4.9.4 Location liable to temporary saturation 4.9.4.1 General When the manufacturer declares that the meter/AFD is suitable for locations liable to temporary saturation, it shall meet the following requirement and shall be marked in accordance with Clause 8. 4.9.4.2 Requirement a) When tested in accordance with 4.9.4.3 a), the meter/AFD shall meet the requirements of EN 60529 for an IP67 code. SIST EN 16314:2013
Key 1 electronic shaker 2 AFD 3 accelerometer 4 charge amplifier 5 automatic vibration exciter control 6 power amplifier A ADF for-aft plane B ADF lateral plane C ADF vertical plane Figure 2 — Diagrammatic layout of the vibration test apparatus 4.9.6 Temperature range As a minimum, the AFD shall be capable of meeting the requirements for the minimum storage temperature range of ≤ -20 °C to ≥ e60 °C.
For an AFD1 or AFD2 the manufacturer shall specify the ambient temperature range with a minimum temperature range of 50 °C for the climatic environment, and the minimum temperature limit being either -40 °C, -25 °C,
-10 °C or 5 °C, and the maximum temperature limit being either 30 °C, 40 °C, 55 °C or 70 °C. An AFD1 or AFD2 shall have at least the same ambient temperature range as the meter.
For an AFD3, the manufacturer shall specify the ambient temperature range with a minimum temperature of at least +5°C to +30 °C. SIST EN 16314:2013
4.11 Safety Requirements 4.11.1 Pressure Absorption Any additional functionality shall not cause the pressure absorption to be greater than that required by the appropriate meter standard. NOTE 1 EN 1359 and EN 14236 have requirements for the pressure absorption of the meter. Pressure at the appliance is very important to safe use of gas, especially for older appliances which may lack flame failure detection.
NOTE 2 Correct operation of valves and their impact on pressure absorption is given in 7.13. 4.11.2 Use in hazardous areas When the manufacturer declares that the meter / AFD is suitable for use in hazardous zones as defined in EN 60079-10-1, the manufacturer shall declare the zone for which it is intended and shall identify the route to compliance as defined in EN 60079-0. The general requirements for, construction and marking of the meter / AFD shall then comply with EN 60079-0. 4.11.3 Electrical Safety The manufacturer of the AFD shall declare:
a) any electrical safety requirements;
b) suitable environments where it can be fitted; c)
how to install, maintain and use it.
When the AFD incorporates a radio communications device it shall meet the general safety requirements as defined in EN 61010-1 or EN 60950-1. 4.12 Immunity to electromagnetic disturbances 4.12.1 General The meter/AFD shall be designed and manufactured in such a way to tolerate the effects of magnetic fields, electrostatic discharge and other electromagnetic disturbances.
4.12.2 Permanent magnetic fields 4.12.2.1 Requirements When tested in accordance with 4.12.2.2, the difference in mean errors and the errors during the positioning of a permanent magnet that generates a magnetic field of 200 mT shall not exceed one third of the MPE specified in the appropriate meter standard. The functionalities of the AFD as declared by the manufacturer shall remain operable without any loss of data.
4.12.3 Electrostatic discharge 4.12.3.1 Requirements When tested in accordance with 4.12.3.2, the difference in mean errors shall not exceed one third of the MPE specified in the appropriate meter standard and the additional functionalities of the AFD as declared by the manufacturer shall remain operable without any loss of data.
4.12.3.2 Test Ensure the AFD is connected to the meter in accordance with the manufacturer’s instructions. Stabilise the meter/AFD to room temperature and test the meter three times at Qmax and 0,2 Qmax in accordance with the appropriate meter standard. With no flow through the meter, test the meter in accordance with EN 61000-4-2 using 10 contact discharges to each of: a) the conductive surfaces; b) a horizontal; c) a vertical coupling plane with a charge voltage of 6 kV (EN 61000-6-1 and EN 61000-6-2) at intervals of a minimum of 1 s, with the battery fitted. With no flow through the meter, test the meter in accordance with EN 61000-4-2 using 10 air discharges (to insulating surfaces) with a charge voltage of 8 kV (EN 61000-6-1 and EN 61000-6-2) at intervals of a minimum of 1 s, with the battery fitted. During the test, connect the inlet boss of the meter under test to the ‘ground plane’. Retest the meter but again stabilise the meter/AFD to room temperature and test the meter three times at Qmax and 0,2 Qmax in accordance with the appropriate meter standard. Confirm there has been no loss of data. 4.12.4 Radio frequency electromagnetic field
4.12.4.1 Requirements During the test specified in 4.12.4.2 a), the meter index shall neither increment nor decrement and the additional functionalities declared by the manufacturer shall remain operable and without loss of data. SIST EN 16314:2013
26 MHz to 3 000 MHz test field strength:
10 V/m amplitude modulation:
80 %, 1 kHz sine wave Read the volume register and non-volatile memory and compare with the value before the high frequency test. b) Arrange the test equipment so that it is possible to pass air through the test meter while it is being subjected to the electromagnetic field. NOTE One way of achieving this is to use a sonic nozzle between the meter outlet and a vacuum line. Test the meter under the conditions given below. During the test, read the index and elapsed time at suitable intervals. From these readings, calculate the corresponding flow rates. Stabilise the meter/AFD to room temperature and test the meter three times at Qmax in accordance with the appropriate meter standard and determine its MPE. Maintain the meter at Qmax and subject the meter/AFD to the range of high frequency field in accordance with EN 61000-4-3, under the classification E1:
frequency band:
26 MHz to 3 000 MHz
test field strength:
10 V/m
amplitude modulation:
80 %, 1 kHz sine wave With the high frequency field switched off retest the meter/AFD in accordance with the appropriate meter standard at Qmax and ensure the meter is still within its MPE. Confirm there has been no loss of data and the mean errors have remained within the MPE specified in the standard. 4.12.5 Electromagnetic induction (power frequency) 4.12.5.1 Requirements When tested in accordance with 4.12.5.2 a), the AFD register/index shall neither increment nor decrement and the additional functionalities declared by the manufacturer shall remain operable and without loss of data. During the test described in 4.12.5.2 b), the flow rate calculated
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