Gas meters - Smart Gas Meters

This Technical Report outlines recommendations for "smart gas meters", specifies recommendations where there is clear consensus, and identifies areas where there are barriers to standardisation. It indicates how functions may be implemented in a harmonized way if they are selected. It does not seek to select which functions are to be implemented in a smart meter. The report covers simple to complex implementations of smart metering.
This Technical Report is applicable to 1st, 2nd and 3rd family gases according to EN 437.

Gaszähler - Intelligente Gaszähler (Smart Gas Meters)

Dieser Fachbericht skizziert Empfehlungen für „intelligente Gaszähler“ („Smart Meters Gas“), legt dort, wo klare Einigkeit herrscht Empfehlungen fest, und ermittelt Bereiche, in denen einer Normierung Hindernisse entgegenstehen. Er zeigt an, wie Funktionen, falls sie ausgewählt werden, auf eine harmonisierte Art und Weise eingeführt werden können. Er strebt nicht danach, eine Auswahl zu treffen, welche Funktionen für einen intelligenten Zähler einzuführen sind. Der Bericht behandelt einfache bis vielschichtige Anwendungen des intelligenten Messwesens.
Dieser Fachbericht ist anwendbar auf Gase der ersten, zweiten und dritten Familie nach EN 437.

Compteurs de gaz - Compteurs de gaz intelligents

Le présent Rapport technique décrit les recommandations concernant les "compteurs de gaz intelligents",
spécifie les recommandations dans le cas où il existe un consensus clair, et identifie les domaines où il existe
des barrières à la normalisation. Il indique comment les fonctions choisies peuvent être mises en place d'une
manière harmonisée. Il ne cherche pas à choisir les fonctions à mettre en place dans un compteur intelligent.
Ce rapport couvre les mises en place simples ou complexes de comptage intelligent.
Le présent Rapport technique s'applique aux 1ères, 2ièmes et 3ièmes familles de gaz conformément à
l'EN 437.

Plinomeri - Pametni plinomeri

To tehnično poročilo navaja priporočila za »pametne plinomere«, določa priporočila, kadar ni jasnega konsenza, in opredeljuje področja, kjer obstajajo ovire za standardizacijo. Navaja, kako se lahko na usklajen način izvedejo funkcije, če so izbrane. Ne poskuša izbirati, katere funkcije naj se izvedejo v pametnem merilcu. Poročilo zajema preproste in kompleksne izvedbe pametnega merjenja. To tehnično poročilo velja za pline prve, druge in tretje družine po EN 437.

General Information

Status
Published
Publication Date
05-Oct-2010
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
20-Sep-2010

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SLOVENSKI STANDARD
SIST-TP CEN/TR 16061:2010
01-december-2010
Plinomeri - Pametni plinomeri
Gas meters - Smart Gas Meters
Gaszähler - Intelligente Gaszähler (Smart Gas Meters)
Compteurs de gaz - Compteurs de gaz intelligents
Ta slovenski standard je istoveten z: CEN/TR 16061:2010
ICS:
91.140.40 Sistemi za oskrbo s plinom Gas supply systems
SIST-TP CEN/TR 16061:2010 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TP CEN/TR 16061:2010
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SIST-TP CEN/TR 16061:2010
TECHNICAL REPORT
CEN/TR 16061
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
October 2010
ICS 91.140.40
English Version
Gas meters - Smart Gas Meters

Compteurs de gaz - Compteurs de gaz intelligents Gaszähler - Intelligente Gaszähler (Smart Gas Meters)

This Technical Report was approved by CEN on 19 July 2010. It has been drawn up by the Technical Committee CEN/TC 237.

CEN members are the national standards bodies of 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 United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 16061:2010: E

worldwide for CEN national Members.
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Contents Page

Foreword ..............................................................................................................................................................4

1 Scope ......................................................................................................................................................5

2 Definitions, glossary .............................................................................................................................5

2.1 Glossary ..................................................................................................................................................5

2.2 Numerical list of standards ...................................................................................................................6

3 What is a Smart Meter? .........................................................................................................................8

3.1 General ....................................................................................................................................................8

3.2 Basic meter .............................................................................................................................................9

3.3 Basic meter with output of pulses or data ..........................................................................................9

3.3.1 General ....................................................................................................................................................9

3.3.2 Pulse output ...........................................................................................................................................9

3.3.3 Data output .............................................................................................................................................9

3.4 AMR meter ........................................................................................................................................... 10

3.5 Prepayment meter............................................................................................................................... 10

3.6 Smart meters ....................................................................................................................................... 10

4 Smart metering system – The smart meter in its context............................................................... 11

5 Basic recommendations – Apply to all Smart Gas Meters ............................................................. 12

5.1 General ................................................................................................................................................. 12

5.2 Metrology ............................................................................................................................................. 12

5.3 Safety recommendations ................................................................................................................... 12

5.3.1 Gas containment ................................................................................................................................. 12

5.3.2 Pressure absorption ........................................................................................................................... 12

5.3.3 Explosive atmospheres and electrical considerations ................................................................... 12

5.4 Environmental recommendations, EMC, vibration, temperature and humidity ........................... 13

5.5 Battery management .......................................................................................................................... 13

5.5.1 General ................................................................................................................................................. 13

5.5.2 Single battery ...................................................................................................................................... 13

5.5.3 Multiple batteries ................................................................................................................................ 13

5.5.4 Implications of add-on devices (e.g. for communications) for batteries installed in meters ..... 14

5.5.5 Battery compartment .......................................................................................................................... 14

5.6 Battery powered electronic indexes ................................................................................................. 14

5.6.1 General ................................................................................................................................................. 14

5.6.2 Recommendations .............................................................................................................................. 15

6 Additional Functions .......................................................................................................................... 17

6.1 General ................................................................................................................................................. 17

6.2 Pulse output ........................................................................................................................................ 17

6.3 Data recommendations ...................................................................................................................... 18

6.3.1 General ................................................................................................................................................. 18

6.3.2 Volume/mass ....................................................................................................................................... 18

6.3.3 Time ...................................................................................................................................................... 19

6.3.4 Temperature ........................................................................................................................................ 21

6.3.5 Pressure ............................................................................................................................................... 21

6.3.6 Compressibility factor, Z .................................................................................................................... 21

6.3.7 Calorific Value ..................................................................................................................................... 21

6.3.8 Logging ................................................................................................................................................ 21

6.4 Firmware upgrade ............................................................................................................................... 22

6.5 Energy calculation within the meter ................................................................................................. 22

6.5.1 General ................................................................................................................................................. 22

6.5.2 Calculation of energy as an approximation for the invoice ........................................................... 22

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6.5.3 Calculation of energy as part of the invoicing process .................................................................. 23

6.5.4 Meters that record in volume units .................................................................................................... 23

6.5.5 Meters that record in mass units ....................................................................................................... 23

6.6 Tariff Operations .................................................................................................................................. 23

6.7 Display/human interface ..................................................................................................................... 24

6.8 Communications ................................................................................................................................. 24

6.8.1 To devices in home ............................................................................................................................. 24

6.8.2 To host systems .................................................................................................................................. 25

6.9 Valve ..................................................................................................................................................... 25

6.9.1 General ................................................................................................................................................. 25

6.9.2 Valve design recommendations ........................................................................................................ 25

6.10 Fraud prevention ................................................................................................................................. 26

Annex A (informative) Regulatory & Legislative framework ........................................................................ 27

A.1 European Directives ............................................................................................................................ 27

A.2 Measuring Instruments Directive, 2004/22/EC ("MID") .................................................................... 27

A.3 Energy End-Use Efficiency and Energy Services Directive, 2006/32/EC ("ESCO") ..................... 28

A.4 "AtEx" Directives ................................................................................................................................. 28

A.5 Battery Directive .................................................................................................................................. 29

A.6 National projects across Europe ....................................................................................................... 29

Annex B (informative) Further Work ............................................................................................................... 30

B.1 Further work in this document ........................................................................................................... 30

B.2 Actions that other organisations may wish to consider ................................................................. 30

Annex C (informative) Tests – Recommended type test plan ...................................................................... 31

C.1 List of tests .......................................................................................................................................... 31

C.2 Endurance test ..................................................................................................................................... 31

C.3 Environmental Tests ........................................................................................................................... 32

C.4 Toluene/iso-octane test ...................................................................................................................... 32

C.4.1 General ................................................................................................................................................. 32

C.4.2 Test 1 .................................................................................................................................................... 32

C.4.3 Test 2 .................................................................................................................................................... 32

C.4.4 Example of a typical apparatus .......................................................................................................... 32

C.4.5 Procedure ............................................................................................................................................. 33

C.4.6 Preparation of a 3 % by volume of a 30 % toluene/70 % iso-octane mixture with nitrogen ........ 33

C.4.7 Calculation ........................................................................................................................................... 33

C.5 Water vapour test ................................................................................................................................ 34

C.6 Ageing test ........................................................................................................................................... 36

C.7 Basic performance test procedure .................................................................................................... 36

Bibliography ...................................................................................................................................................... 38

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Foreword

This document (CEN/TR 16061:2010) has been prepared by Technical Committee CEN/TC 237 "Gas

meters", the secretariat of which is held by BSI.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.

This document is intended to be a precursor to a formal standard for Gas Meters that provide some additional

functions beyond that required under the Measuring Instruments Directive (MID). It is noted that other CEN

and CENELEC Technical Committees are active in the areas of metering communications – most relevant

being CEN/TC 294 "Communication systems for meters and remote reading of meters", which covers

automatic reading of Gas Meters in great detail. The functions described are mainly for use on Residential

Utility meters, but may be equally applicable to meters used for commercial and industrial applications. A

number of the requirements may be applicable to "add-on" devices to Gas Meters. However, it is outside the

scope of the TC to standardise beyond Gas Metering devices.
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1 Scope

This Technical Report outlines recommendations for "smart gas meters", specifies recommendations where

there is clear consensus, and identifies areas where there are barriers to standardisation. It indicates how

functions may be implemented in a harmonized way if they are selected. It does not seek to select which

functions are to be implemented in a smart meter. The report covers simple to complex implementations of

smart metering.
st nd rd

This Technical Report is applicable to 1 , 2 and 3 family gases according to EN 437.

2 Definitions, glossary
2.1 Glossary
MID Measuring Instruments Directive, 2004/22/EC

AtEx "Atmospheres Explosibles". A pair of EU Directives governing hazardous areas, 99/92/EC; and

the equipment that can be used within hazardous areas, 94/9/EC

CEN European Committee for Standardization: European standards body for non-electrical

equipment

CENELEC European Committee for Electrotechnical Standardisation: European standards body for

electrical equipment
BSI British Standards Institution
DLMS UA The Device Language Message Specification User Association

Harmonised European Standard adopted by a European standardisation body, made available to the public

standard and that has been recognised as a method to demonstrate conformity to Essential

Requirements of a European Directive
PED Pressure Equipment Directive, 97/23/EC

WELMEC Western European Legal Metrology Cooperation: an organisation of legal metrologists

ESCO Energy End-Use Efficiency and Energy Services Directive, 2006/32/EC

Basic Meter a meter that is safe and provides no function beyond that required by the MID

IT System Information Technology System

AMR Automatic Meter Reading. A technology that allows a meter to be read that does not require

direct observation of the meter
AMM Advanced Meter Management
AMI Advanced Meter Infrastructure

Connector a mechanical device, or pair of devices, that makes a semi-permanent circuit between the

meter and a cable
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Normative a document containing technical specifications adopted by the Organisation Internationale de

document Métrologie Légale (OIML), subject to the procedure stipulated in Article 16(1) of the MID

Standard a technical specification approved by a recognised standardisation body for repeated or

continuous application, with which compliance is not compulsory and which is one of the

following:

 International Standard: a standard adopted by an international standardisation organisation

and made available to the public;

 European Standard: a standard adopted by a European standardisation body and made

available to the public;

 national standard: a standard adopted by a national standardisation body and made

available to the public
Base
specific conditions to which the measured quantity of gas is converted
Condition

EXAMPLES Temperature of 273,15 K and absolute pressure of 1,013 25 bar or temperature of

288,15 K and absolute pressure 1,013 25 bar.

Burst Data this may be generated at the pulse outputs of electronic indexes and volume converters. To

save power, electronic devices will only wish to switch on output circuits infrequently.

Therefore, rather than emit a pulse as soon as one should be generated, the output circuit will

only be switched on infrequently, and then a burst of pulses is transmitted

Gas for billing purposes, the "day" may not start at 00:00: it may start at some other time. This start

Metering time may also be subject to daylight savings time changes, leading to "days" with lengths other

Day than 24 h
UTC Coordinated Universal Time. This is a "world time", without daylight savings
Electronic the register, electronics, and battery
Index
Assembly

Index an enclosure to contain the index assembly, where the index assembly is not contained in the

Housing body of the meter
Register the display element + data store
2.2 Numerical list of standards
NOTE Other documents are listed in the Bibliography.
Body Reference Title Note
CEN EN 12261 Gas meters ― Turbine gas meters Standard for Turbine Meters,
Harmonised with MID.

1) The calorific values of gas are expressed usually in megajoules per cubic metre (MJ/m³). The amount of gas in the

determined volume, however, will depend on temperature and pressure. Therefore a nominated base condition is used.

Volume conversion takes the volume of gas measured, then converts this to a volume of gas at the equivalent base

condition. See EN 12480:2002, 3.1.9, and EN 12405-1.
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Body Reference Title Note
CEN EN 12405-1 Gas meters ― Conversion devices ― Standard for Volume
Part 1: Volume conversion Converters. Harmonised with
MID.

CEN EN 12480:2002 Gas meters ― Rotary displacement gas Standard for Rotary Piston

meters meters. Harmonised with
MID.
CEN EN 1359:1998 Gas meters ― Diaphragm gas meters Standard for diaphragm
meters, Harmonised with
MID.
CEN EN 13757 Communication systems for and remote Multi-part document detailing
reading of meters communications formats
CEN EN 13757-1 Communication system for and remote OBIS-COSEM Application
reading of meters ― Part 1: Data layer for Gas, etc. meters.
exchange
CEN EN 13757-2 Communication systems for and remote
reading of meters ― Part 2: Physical and
link layer
CEN EN 13757-3 Communication systems for and remote M-Bus Wired specification
reading of meters ― Part 3: Dedicated
application layer
CEN EN 13757-4 Communication systems for and remote M-Bus Radio specification
reading of meters ― Part 4: Wireless
meter readout (Radio meter reading for
operation in the 868 MHz to 870 MHz
SRD band)
CEN EN 14236:2007 Ultrasonic domestic gas meters Standard for Ultrasonic
meters. Harmonised with
MID.
CEN EN 13463 (In a number of parts) Non-electrical
equipment for use in potentially explosive
atmospheres
CENELEC/IEC EN 60079-10; Electrical apparatus for explosive gas
IEC 60079-10 atmospheres ― Part 10: Classification of
hazardous areas
CENELEC/IEC EN 60079; (In a number of parts) Electrical apparatus
IEC 60079 for explosive gas atmospheres
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Body Reference Title Note

CENELEC EN 62056-61 Electricity metering ― Data exchange for For information. Sister

meter reading, tariff and load control ― document to EN13757-1
Part 61: Object identification system
(OBIS) (IEC 62056-61:2006)

CENELEC EN 62056-21 Electricity metering ― Data exchange for For information. Electricity

meter reading, tariff and load control ― standard for opto-electrical
Part 21: Direct local data exchange ("flag") interface.
(IEC 62056- 21:2002)
CENELEC/IEC EN 60529:1991 Degrees of protection provided by
enclosures (IP Code) (IEC 60529:1989)
3 What is a Smart Meter?
3.1 General

A Smart Meter is one that is compatible with the MID and ESCO directives, and has communications

capabilities.

The following sections detail the variations of functional complexity that are likely to make up smart meters or

may form part of a smart metering system. The table below details some of the possible aims and methods

that may form part of a smart meter.
Table 1 — Aims and methods for smart meters
Aim Means Possible methods
Reduction of costs for meter Remote meter reading Minimum one way communication
reading (in case frequent meter from meter
reading is obliged)
Reduction of complaints – Remote meter reading Minimum one way communication
improved quality of meter from meter
reading

Reduction of payment arrears Prepayment, or shutting off Remotely operated valve in meter;

customer supply Two-way communication
Regular billing based on real Remote meter reading Minimum one way communication
consumption from meter

Providing customer consumption Info on meter display (or home Two-way Communication;

information display unit) Electronic Display
Advertising Info on meter display (or home Two-way Communication;
display unit) Electronic Display
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Aim Means Possible methods

Limitation of production capacity Peak shaving by differential Two way communication;

tariffs Electronic Display;
Interval data

Stop supply during shortage Switching off customers Remotely operated valve in meter;

Two way communication

Safeguard for excess flow Switch off customers when there Local control of valve in meter

sensed at the meter is a customer installation
problem (e.g. caused by a leak)

Safeguard for network issues Control signal for an area Remotely operated valve in meter;

Two way communication
3.2 Basic meter

It may be helpful, as a starting point, to observe that a "Basic" meter is one that is safe and provides no

function beyond that required by the MID . It is worth noting the quotations from MID Annex 1, "Essential

Requirements" that are contained in Annex A of this document.

It can be argued that prepayment meters that provide data back to the suppliers IT systems via a token are

Smart. To try to clarify the different types of meter that are available, different categories are defined below.

3.3 Basic meter with output of pulses or data
3.3.1 General

A basic meter with output can be part of a smart (AMR) system. It may be possible for this system to meet the

recommendations of ESCO.
3.3.2 Pulse output

The basic meter may have an integrated or a remotely equipped pulse output or a data output.

The pulse is widely used as a method of providing data from a meter. The meter emits a pulse each time a

fixed volume is measured.

The pulse value outputs are marked as 1 imp ≙ … m³ (or dm³) or 1 m³ (or dm³) ≙ … imp.

The most widely used method for pulse output is to use a magnet in one of the least significant wheels in the

index. A reed switch is commonly used to detect the passage of the magnet.
3.3.3 Data output

Data outputs can be provided through serial interfaces. Data outputs should provide information on meter

readings, meter identification and meter status. The index value (as read on the meter) is provided by the data

output. Data outputs can be built-in or provided by add-on to an existing meter. Depending on the interface

used, data encryption and access control has to be considered. Guidance on data outputs is detailed in

WELMEC Software Guides 7.1 and 7.2.

2) Please note that meters with pre-MID approvals will also usually meet this recommendation.

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3.4 AMR meter

An Automatic Meter Reading (AMR) meter can form part of a smart metering system. An AMR-equipped

meter can provide data to an IT system. In its simplest form, it provides a current meter read without physical

access to the meter. A number of technologies exist that can be used to collect and transfer the data – from

inductive pad, where a meter reader needs to physically connect a reading device to a component connected

to the meter, through walk-by and drive-by systems, to fixed wired or wireless networks with star or mesh

topologies.
An AMR system can be built based on a basic meter with pulse or data output.

An AMR meter may or may not log data, and provide information about events and its status when it

transmits data.

While it is possible for an AMR Meter to be truly one way, broadcasting data either continuously or at pre-set

intervals, most systems are at least 1,5 way (which report when stimulated), and many are two way, and give

answers to specific questions.
3.5 Prepayment meter

Prepayment, or "pay as you go", meters allow customers to make advanced payment for energy . In their

simplest form, a mechanical token (or coin) is used to allow the valve within the meter to be opened until a

measured quantity of gas has been consumed. State of the art prepayment meters use electronic tokens or

SMS to add credit to the meter, set tariffs on the meter and provide data on consumption and events to the IT

system. The latest meters can remotely manage the repayment of debts, and perform the calculations to

consume the credit applied to the meter based on tariff and energy conversion data. They can manage

change of retailer in a competitive retail market for energy, and some can even be switched to a mode where

they function as a credit meter.
3.6 Smart meters

There are a number of terms, such as "AMI", "Smart", "AMM", where there is no commonly agreed definition.

A smart meter will have communications operating within acceptable timeframes and at least one additional

function from the following list:
 Built-in Customer Display of time of use information (see 6.7);
 Local provision of time of use information (see 6.8);
 Shut-off Valve (see 6.9);
 Home Automation interface (see 6.8.1);
 Prepayment functionality (see 6.5, 6.6, 6.7 and 6.9);
 Remote update of configuration data (see 6.3);
3) The term
...

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