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P r o f i l e sThe Elster-Instromet customer magazine 2/2012

Fit for future requirements: EK280

High-pressure regulators MR HP20 range completed

BSI Protection Profile: facelift for Smart Energy Guideline

2 Editorial Elster-Instromet Profiles 2/2012

our industry combines two apparently conflicting characteristics. on the one hand, it is a very conservative industry (understandably given the safety aspect), and on the other hand, it is an industry going through incredible change and expansion, in a time that has been de - s cribed by the international Energy agency as the ‘Golden age of Gas’.

any business in this industry has to have a balance of those two characteristics: a stable and reliable foundation, from which one can support the innovation and change to meet the industry’s ex -pectations and aspirations.

last month i attended Elster’s 3-day inter-national technical training meeting and its international Sales conference. at both of these events, there were representatives from Elster’s businesses around the world, from argentina to russia, and from China to the United States.

if i needed any reminding of why Elster is the world-leading supplier of gas measurement and control systems, the reasons were before me in those two gatherings. Firstly, our colleagues from around the world were getting the latest information and training in our rapidly expanding product range so that, no matter where in the world you meet Elster, you will receive the same high level of

expertise and service. Secondly, there was an incredible depth of experience, skill and knowledge in gas measurement and control. it was a very powerful combination: technical innovation, backed by many years of proven gas engineering experi-ence.

i hope the articles in Profiles are of interest to you. in this edition, you can read about Elster’s products and systems from the mid- and upstream environment: our new EK280 volume conversion device, our Mr HP20 high-pressure regulator family and much more. at the other end of the gas network, you will find information on our new, fully interoperable Smart Gas Meter (currently being deployed in the UK) and on a major project in india.

i hope you enjoy the magazine, and thank you for your interest in our company. the editorial team and i would certainly wel-come any thoughts or feedback you may have.

david thomsonVice-President SalesGas Metering Europe

Innovation built on a solid foundation

PublisherElster GmbH55252 Mainz-Kastel, Germanywww.elster-instromet.com

Editorial Staff Gudrun Biedermann, Elster GermanyPaul Webster, Elster Instromet UKK. C. Tan, Elster-Instromet Singapore

Please write toEurope/Africa/America/Australia:Elster GmbHGudrun BiedermannSteinern Strasse 19–2155252 Mainz-Kastel, GermanyT +49 6134 6 05-2 18E [email protected]

Asia:Elster-Instromet Sdn. Bhd. (Singapore Branch)K. C. Tan29 Tai Seng Avenue#06-05A Natural Cool Lifestyle HubSingapore 534119T +65 62477728E [email protected]

England:Elster Metering Ltd.Steve CaseTollgate Business ParkBeaconside, StaffordStaffordshire ST16 3HS, EnglandT +44 1785 275306E [email protected]

Authors Michael Franz, Elster Germany Jacob Freeke, Elster-Instromet, NL Matthew Hallchurch, Elster Metering UKDr. Daniela Lücke-Janssen, Elster Germany Paul Ladage, Elster GermanyCarsten Lorenz, Elster Germany Peter Merckaert, Elster Belgium Shivdas Nair, Elster IndiaRüdiger Pfeil, Elster Germany

Articles signed by the author reflect their personal opinion.

Page 8-10: ©iStockphoto.com/Fentino Page 17: ©iStockphoto.com/Henrik5000 Page 18: ©iStockphoto.com/marrakeshh

Publishing dates:Three editions for the year 2012

Customer magazine online:www.elster-instromet.com

ProdUCtS 3 Elster-Instromet Profiles 2/2012

New user interface – everything at a glancethe first thing that strikes you is the large graphics display with 200x80 pixels. it is illuminated even in battery mode and therefore easy to read without an additional light source, even in adverse installation conditions. its operation is based on Win-dows Explorer making navigation very straightforward. an additional function key enables the user to return to the main screen, clear the status register or freeze the display with ease. additional symbols provide information about the remaining capacity of the device batteries and the reception field strength of the modem. this means that the user has all the infor-mation he needs at a glance (Fig. 1).

connection to meters as long as the volume conversion device has an external power supply. this enables you to measure, archive and also monitor flow rates pre-cisely. if the HF pulse generator is used as an input for the conversion process, the lF signal is automatically used as the input signal for the volume conversion process in the event of a failure of the external power supply. this is a function that is nor-mally only available on flow computers – and only then if they are protected from mains failures by an uninterruptible power supply.

the same time-tested pressure and tem-perature sensors are used as in the pre-decessor model. the pressure sensor is permanently installed in the housing but external versions can also be supplied. the new feature is that another pair of sensors can be connected – even retro-spectively. a second pressure sensor can be used, for example, to monitor the inlet or outlet pressure from a gas measure-ment system.

Effective data transfer – limitless communicationif the EK280 is used in Zone 1 potentially explosive atmospheres, the function extension unit FE260 can be used as in the past to provide an Ex-barrier for the interface and the outputs as well as to make the power supply intrinsically safe. the familiar communications modules for

New highlight: volume conversion device EK280

Fit for future requirements

As of the end of the year, the new Elster volume conversion device EK280 will start to gradually replace its successful predecessor, the EK260. And the new addition is a genuine star of the future. Not just its display – the housing is also larger than on the EK260. This allows a GSM/GPRS modem and a power supply unit to be integrated for a whole host of applications. But it has lots of other features as well: connections for additional sensors e.g. HF sensor of a gas meter, additional digital inputs, data interfaces which can be used simulta-neously, DLMS/COSEM communications protocol, Modbus PUSH, system monitoring and much more – but let’s take a closer look at the new features and options in detail.

Fig. 1: The new display – all the main information at a glance

Connections to the gas meter – more flexible than everin addition to the encoder index (Namur or SCr interface) and low frequency (lF) pulse generators, high frequency (HF) pulse generators are also supported for

4 ProdUCtS Elster-Instromet Profiles 2/2012

Several data interfaces – all good things come in threesthe volume conversion device EK280 has three serial interfaces.

1. the design of the optical interface on the front of the device complies with the time-tested standard iEC 62056-21. this interface is generally used for commis-sioning and configuration purposes.

data transfer, in particular the GSM/GPrS modem with the time-tested applications, also continue to be available.

one of the highlights in this respect is the GSM/GPrS modem module which can simply be plugged into the EK280 and can be used in battery mode even in poten-tially explosive atmospheres (Zone 1).

in Zone 2 potentially explosive atmospheres or in safe areas, the integrated modem module can be used with a power supply integrated in the same housing, removing the limits on its length of use. in other words, compared to its predecessor model EK260 which, for remote reading, had to be con-nected to an external modem type EM260 (GSM/GPrS) or alternatively to a modem from another manufacturer, the EK280 now offers full functionality in a single device (Fig. 2). that saves time and money both in the stage of procurement and during installation, commissioning and main-tenance work.

Fig. 3: Data interfaces – all good things come in threes

Fig. 2: Installation of EK260 with modem EM260 … … All functions are now integrated in the EK280!

2. as on the previous model EK260, the device also has a serial interface (which can be set to rS 232, rS 485 or rS 422). this is designed for the permanent con-nection of the function extension unit FE260 or of communications compo-nents from other manufacturers.


Fig. 4: DLMS/COSEM – the future of meter data communication

3. in addition, there is another interface which takes the form of a connector to allow integration of the GSM/GPrS modem module mentioned above in the EK280 with no additional installation work. other communications modules for this interface will be added to the product portfolio over time.

the special feature of these interfaces is that they function completely independ-ently of each other and can be operated simultaneously. this is a massive advan-tage that this device offers over its com-petitors, for example if two different users want to read data from the device or if the device is to be used for both billing and system monitoring at the same time (Fig. 3).

DLMS User Association

Chemin de Merdisel 9 Tel. +41 41 850 3920 CH-1242 Satigny-Geneva Fax +41 41 850 3916 Switzerland [email protected]

device

languagemessagespecification

Certification No. 1196 This is to certify that the metering equipment identified as:

Type: EK280 Mgmt. LDN: SAP = 1, "454C5332304130303034343339313931" (ELS20A0004439191)

manufactured by: ELSTER

has successfully passed the DLMS/COSEM Conformance test, under the following conditions: CTT version: CTT version 2.4 Licensed to: ELSTER GmbH (30.01.2008) COSEM object definitions file version: Object_defs_v2.4_released_110902.dat Media identifiers used: [ABSTRACT, GAS]

Testperformed

Communication profile

Opening mode Application context

Date and time Digital signature of the test report

Test 1 3 layer HDLC DIRECT_HDLC LN 2nd Sept. 2011 26A2BFAC7EA8B2795806B74F19692AE4

The authenticity of the test report(s) has been verified by the DLMS User Association and the metering equipment identified above is listed on its web site at: http://www.dlms.com.

With this, the manufacturer is entitled to display the DLMS/COSEM Compliant mark – shown below – on its product duly identified and on its product literature.

The test reports are filed by the DLMS UA. Copies are available from the manufacturer.

This Certificate is only valid for the functions successfully tested. The test has been executed on one specimen of the product, as identified by the Management Logical Device Name reported. Results may not be applicable for other test specimens.

Date: Geneva, the 2nd September 2011

General Secretary

COSEM Compliant


Various communications protocols – multilingual is inthe widely used iEC 62056-21 protocol is also used by the EK280. this ensures downwards compatibility with Elster’s EK series so that the EK280 can be read by many established MdM systems.

in addition, dlMS/CoSEM protocols for transport and application layers are im -plemented in the EK280 (Fig. 4). in this context, Elster consistently uses interna-tional standards for meter data commu-nication and also ensures that future re -quirements for secure data communication using cryptography can be satisfied. data modelling is based on the CoSEM object model coupled with the oBiS identifier system.

Fig. 5: Automatic protocol detection with no need for additional configuration

Meter data management (billing)

System monitoring (SCADA)

Modbus

DLMS/COSEM

IEC 62056-21

the Modbus protocol is supported in vari-ous modes for connection to the remote or SCada systems. Not only is it possible to query the EK280 (SlaVE), but the device can also transfer data automatically (MaStEr) – and all this in battery mode as well.

another highlight is that the EK280 can command the variety of described data protocols independently, without the need for additional configuration! this means that if a remote meter reading system or SCada system queries (PUll) the volume conversion device, it automatically identi-fies which data protocol to communicate with (Fig. 5). different systems can thus communicate via a single interface although not all at the same time. For this reason, the device is equipped with three interfaces which are all “multilingual”!

Volume conversion and system monitoring – all-in-oneit is in the interests of grid operators and energy suppliers to ensure that the capac-ity of gas grids is used uniformly and at peak efficiency. Moreover, gas networks are frequently also used as buffers. the most important criterion for monitoring the gas grids is the current line pressure. in the past, this required additional devic-es to perform measurements in the gas flow upstream of the regulator of a gas measure ment system. the new EK280 volume conversion device now makes it possible to use a second pressure sensor for this task – in addition to measurement and conversion. thus the measured value can be recorded and the line pressure can be monitored to ensure that it lies within the set limits.


Up to five additional digital inputs can be used to record and monitor signal sensors such as safety shut-off valves on regulators, differential pressure switches on filters or a simple door contact.

the fact that these measurement data and status information can be sent to a remote system or SCada system by a separate interface is yet another indication of how versatile and effective the new volume con -version device is. Elster provides volume conversion and system monitoring in a single device while keeping the two func-tions completely independent in terms of their communications technology.

Reliable power supply – battery and/or mains operationthe basic version of the volume conver-sion device EK280 is battery-powered. data communication from Zone 1 poten-tially explosive atmospheres is also possi-ble with batteries. if the device is used in Zone 2 potentially explosive atmospheres or in safe areas, a power supply unit may also be integrated into the device as an option. the batteries remain in the device in this case to provide a backup power

supply to the volume conversion device in the event that the external power supply fails. it is also possible to buffer the data communication using batteries.

New parameterization program: enSuite – a program for all occasionsWe have also taken a new direction for the parameterization process. our new parameterization software is called enSuite and will not only be used for the new volume conversion device EK280 in the future but also for other newly de -veloped electronic gas measuring equip-ment from Elster. enSuite – a program for all occasions – more details in the next issue of Profiles.

as you can see, the volume conversion device EK280 has a great deal of potential and is well equipped to meet the demands of the future.

and while we’re talking about future demands, the device also supports a firm-ware update on the basis of the WElMEC 7.2 Software Guide. this can be carried out both via the optical interface and by remote data transfer. this means that the device can be kept up to date even after it has been installed.

all in all, a future-proof investment.

rüdiger Pfeil [email protected]

Fig. 6: Volume conversion and system monitoring with a single device

2nd temperature sensor (option)

Up to 5 status inputs

2nd pressure sensor (option)

Inlet pressure

Gas filter

Differential pressure

switch

VbLF/HF/

encoder

e.g. via RS 232/485/422 and Modbus to SCADA system

Monitoring

via GSM or GPRS (TCP/IP)

Billing/EDM

p T

Regulator

SSV


MR goes high pressure:

High-pressure regulators MR HP20 range completed

the dN 25 regulator fits seamlessly into the modular element range of the Mr HP20 device family and rounds off the range (Fig. 2). the measuring unit MW 300 has already been approved for larger nominal diameters and higher outlet pressures and will thus be the standard measuring unit for this device.

Naturally, the safety shut-off valve of the Mr HP series will continue to be used which means that all the units in the range will have identi -cal operating procedures. a central control unit (SCU) contains the switching mechanism and therefore also the reset. the external trip button for the safety shut-off valve also integrated in this control unit allows the safety shut-off valve to be closed manually for testing purposes. the modular element system comprises two measuring unit sizes with diaphragm diameters 100 mm and 50 mm and two spring dome sizes “l” and “H” to cover the entire set range (Fig. 1). this allows the units to be modified and adjusted to changing demands in retrospect. two other options have also been added: • Safety shut-off valve remote indicator• Flow direction right to left

a switch unit is fitted on the rear of the regulator on the safety shut-off valve shaft for remote indicator purposes or to monitor the SSV position (Fig. 3). this unit, which is identical for all sizes, contains a standard switch with atEX approval and an iECEx certificate. this means that it can be connected directly to an EK series volume conversion device, even in Zone 1 potentially explosive atmospheres. Since volume conversion devices are normally

The high-pressure regulator MR HP20 of nominal size DN 50 was launched successfully in 2011. This was followed at the start of 2012 by nominal sizes DN 80 and DN 100 with measuring units MW 300 and MW 500. A unit with a nominal size of DN 25 has now followed to complete the product range.

read remotely these days, this also makes it possible to signal tripping of the safety shut-off valve or to monitor its position using a SCada system (see also the article about the new volume conversion device EK280 on page 3).

retrofitting is possible at any time and the regulator can also be equipped ex-works.

the device design means that the SSV control unit is fitted on the front of the unit if the medium flows through it from left –>⇒right. if it is necessary to install the unit in a system where the medium flows right <– left (or with the measuring unit pointing downwards) the “right-left flow” (r-l) option can be chosen when ordering. in this case, the safety shut-off valve will be assembled the opposite way round

Fig. 2: MR HP20 series DN 25 – DN 100


Type L100

Diaphragm ø 100 mmSpring dome “L“

Type L50

Diaphragm ø 50 mmSpring dome “L“

Type H50

Diaphragm ø 50 mmSpring dome “H“

W do/OPSO: 50 – 700W du/UPSO: 5 – 200

W do/OPSO: 200 – 1800W du/UPSO: 80 – 800

W do/OPSO: 400 – 3000W du/UPSO: 300 – 1500

Fig. 1: SSV versions

and fitted on the opposite side of the trip shaft. this ensures that it is easy to use and easily accessible regardless of the installation position.


Corrosion protectionCorrosion protection is very important. For example, the measuring unit components of the regulator and safety shut-off valve are given a zinc-nickel coating. Zinc-nickel coatings remain permanently rust-free, even in very rough conditions such as off-shore and outdoor installations where high humidity and other contamination can occur.

as has been the case with all other housings for low-pressure and medium-pressure components for some time, the housings undergo electrophoretic paint-ing. a topcoat in Elster light grey is applied

Most important technical data of the Mr HP20 series:

Pressure rating: aNSi 150/PN 20

Strength class: IS (integral Safe, 20 bar)

Nominal size: dN 25, 50, 80, 100

Flow rate coefficient dN 25: 400

dN 50: 1400

dN 80: 3600

dN 100: 4500

inlet pressure: 0.2 – 20 bar

outlet pressure range: 20 – 2000 mbar

accuracy Classes: aC 2.5; aC 5; aC 10

SSV set range oPSo: 50 – 3,000 mbar

SSV set range UPSo: 5 – 1,500 mbar

Fig. 3: Safety shut-off valve remote indicator

to provide UV protection. the units are not normally otherwise coated so as to prevent the accumulation of coatings if the unit is thereafter coated with the rest of the station. Even without further coating, the unit will still provide top level corrosion protection.

Capacity range / Initial calibrationthe dN 25 version of the Mr HP20 also operates with a full valve cross-section which is the same size. this ensures high capacities with high control quality when combined with inlet pressure com-pensation.

Your benefitsthe dN 25 nominal size rounds off the Mr HP20 series. New options such as the remote indicator for the safety shut-off valve open up an even wider range of applications. their high-quality corrosion protection also makes the units ideal for the very roughest outdoor use.

Paul ladage [email protected]

EVENTS 11 Elster-Instromet Profiles 2/2012

The 25th World Gas Conference (WGC 2012) held in Kuala Lumpur, Malaysia, ended on a note of optimism as the world prepares to enter the Golden Age of Gas. “Natural gas is vital to the future energy mix and will play an increasingly important role in sustainable future global growth,” says Datuk (Dr.) Abdul Rahim Hashim, President of the International Gas Union (IGU). Good news for the gas industry, good news for Elster.

World Gas Conference in Kuala Lumpur:

WGC 2012 closes with optimism for future of gas

over the five days of the WGC 2012 (from Monday, 4 June to Friday, 8 June), 5,299 delegates from 90 countries were treated to the best the industry had to offer, with technical discussions and keynotes de -livered by 575 speakers, spanning the entire value chain of the gas industry. the 11,400 sqm exhibition hall housed 220 exhibitors and 13,803 people visited the exhibition during this period.

Elster innovations meet rising global demand for natural gasUnder the slogans “advanced metering technologies for natural gas” and “From the wellhead to the burner tip”, Elster demonstrated metering innovations that provide integrated gas measurement and regulator solutions for both high- and low-pressure applications. these included the new EK280 volume conversion device, the new themisplus diaphragm gas meter, the Q.Sonicplus ultrasonic flow meter, and the raBo (rotary all By one) rotary gas meter, as well as the recently introduced series of high-pressure Mr HP20 regula-tors. With rising demand for natural gas and advanced meter reading (aMr) tech-nology worldwide, Elster continues to sup-port upstream, mid-stream and down-stream applications across the value chain.

Elster’s themisplus is one of the world’s first commercial and industrial diaphragm gas meters with integrated volume conversion that directly measures and displays the standard volume and sends this data to the utility using its integral GPrS modem.

12 EVENTS Elster-Instromet Profiles 2/2012

Elster’s Q.Sonic plus, a next generation ultrasonic flow meter developed in direct response to industry demand for higher performance and accuracy, was also on display and features intelligent self-diagnostics to eliminate the need for extensive commissioning, installation and health checks.

Elster’s new raBo (rotary all By one) rotary gas meter meets virtually all market requirements and reduces operating costs thanks to longer maintenance intervals and easy retrofitting with digital encoders.

“today’s natural gas industry demands reliable and advanced metering technolo-gies for less overall measurement uncer-tainty,” said Michael Calovini, Executive Vice President of Elster’s international gas business. “as a recognized global leader in gas metering, measurement and utili-zation, Elster’s solutions are designed specifically to meet the industry demand for integrated systems with high reliability, performance and accuracy. We are de -

lighted to have participated in WGC 2012 as it provided a world stage for Elster to demonstrate its expertise in delivering integrated solutions that meet a wide and diverse range of applications from the wellhead to the burner tip,” Calovini added.

according to the international Energy agency’s (iEa) World Energy outlook 2011, global demand for energy will increase by one-third between 2010 and 2035, with demand for natural gas rising the most in absolute terms. Natural gas is forecast to be the only fossil fuel to increase its share in the global energy mix over this period.

the international Gas Union has been organizing the triennial World Gas Con-ference (WGC) since 1931. the WGC to -gether with the accompanying exhibition has become the most important interna-tional meeting of the sector. at the end of each iGU Presidency triennium, the host country is accorded the privilege of hosting the World Gas Conference.

datuk rahim Hashim officially handed over the iGU Presidency on behalf of Malaysia to iGU Vice President and Senior Vice President of total, France, Jérôme Ferrier, for the 2012-2015 triennium. the soon to be new iGU President, Jérôme Ferrier, announced that the 26th World Gas Conference will be hosted by France and will take place in Paris from 1 to 5 June 2015. the theme for the new triennial Work Programme (2012-2015) will be “Grow -ing together towards a friendly planet” and there will be four strategic guideline pillars: Human resources for the Future, Natural Gas available Everywhere, Natu-ral Gas for a Sustainable development and Combination with renewable and Electricity.

“We are much honoured to be taking on the important responsibility of promoting the use of natural gas through such an established meeting place as the World Gas Conference. We must continue to address the world’s challenges such as increasing global energy demand by edu-cating the energy industry on the benefits of natural gas and its imperative role in our energy future,” said Jérôme Ferrier.

Elster is looking forward to seeing you all in Paris in 2015!

Jacob Freeke [email protected]

SERVICE 13 Elster-Instromet Profiles 2/2012

Elster’s turbine gas meters have proven their worth for decades now for precise and reliable measurement of gas. Detecting the flow velocity with a measuring wheel (turbine wheel) does not restrict measurement to individual points or paths but allows for the entire cross-sectional area to be considered. This leads to excellent measure -ment performance over a broad flow and pressure range.

High-pressure test rigs with natural gas and air:

We’ll test for you – with high pressure of course

the measuring characteristics are normally verified by testing on what is referred to as a low-pressure test rig. in this case, the meter is tested for accuracy with air as the medium at various flow rates and at approximately atmospheric pressure.

at high gas pressures, all types of meter display a more or less pronounced offset with respect to testing at low pressure. So the measurement performance with high

pressure cannot be predicted with a low-pressure test alone.

this behaviour has been allowed for in the case of the turbine gas meters in Euro-pean Product Standard EN 12261 and in Germany in technical directive tr-G 13 as well. this prescribes a test with gas at high pressure if using a turbine gas meter above 4 bar. in this case, the pressure of the test gas should, wherever possible,

Elster high-pressure test rig with air

14 SERVICE Elster-Instromet Profiles 2/2012

correspond to the subsequent operating pressure of the meter. the tests are con-ducted with natural gas or air.

incidentally, if the turbine gas meter is operated at high pressure, we recommend “only” testing under high-pressure con-ditions. this procedure allows the meter to be adjusted optimally to its subsequent operating conditions. We offer an addi-tional factory test with air if requested.

Since the gas used on the high-pressure test rigs currently available comes from a natural gas network, the performance data is dependent on various parameters. For instance, the maximum possible test flow rate depends on the consumption of the downstream network, which may

Natural gas high-pressure test rig pigsar with SM-RI from Elster

SERVICE 15 Elster-Instromet Profiles 2/2012

High-pressure test rigs with natural gas*

Test location Test pressure Q min Q max DN

Dorsten/pigsar 16 – 50 bar 5 op. m³/h 6,500 op. m³/h 80 – 400

Recklinghausen/RWE Wi 30 – 50 bar 20 op. m³/h Wi 200,000 Nm³/h 50 – 400 Su 16 – 50 bar Su 100,000 Nm³/h

Stuttgart/EnBW 4 – 20 bar 40 Nm³/h 80,000 Nm³/h 50 – 300

Dänemark/FORCE 0 – 50 bar 10 Nm³/h 400,000 Nm³/h 50 – 500

* Please note that this is only a selection of typical test rigs

Elster allows you to be present during the high-pressure test

Since operation of the high-pressure air test rig is not dependent on a natural gas network, we are able to offer you short-term target dates.

it is possible to attend the high-pressure test by agreement. an inspection of the Pa13 test rig is also held within the frame-work of our industrial Gas Metering Seminar.

regardless of location, we serve you everywhere with high pressure ...

Michael Franz [email protected]

result in differences during summertime and wintertime operation. the required test conditions must be checked and confirmed individually when ordering.

owing to the increasing number of high-pressure tests, certain test rigs are now utilized greatly. in this case, long delivery times must be anticipated under certain circumstances.

test rigs operating on the basis of the “closed loop” principle are network-inde-pendent. in this case, the medium is pumped into a test rig and is circulated in a closed loop. one example is the test rig at our Mainz-Kastel site in Germany, where the test medium, air, can be oper-ated in a range between 1 and 25 bar (gauge pressure). the “equivalence” be -tween natural gas and air as a medium for high-pressure test rigs has been verified: the Pa13 high-pressure test rig has been approved for official calibration tests since 2006.

High-pressure test rig with air

Test location Test pressure Q min Q max DN

Mainz-Kastel/ELSTER 1 – 25 bar 5 op. m³/h 1,800 op. m³/h 50 – 200


Interoperable by design

Elster demonstrates real interoperabilityat ESMIG workshop

in order to demonstrate how important SSWG’s work is within the Smart project, a stand was commissioned for the exhibition demonstrating the Elster BK-G4E Smart Gas Meter interoperating with communi-cations hubs, electricity meters and in-home displays from other Smart Meter manufacturers.

those present at the workshop were able to observe the Elster Smart Gas Meter readings being communicated to a num-ber of in-home displays simultaneously. Half hourly interval data, valve state and event conditions were also able to be conveyed to the displays using secure methodology.

Consequently, this demonstrated the work done by SSWG with the Zigbee alliance in extending their Smart Energy Profile protocol to meet the UK metering requirements, and by doing so, the UK Smart project is being de-risked, optimized and accelerated.

attendees’ interest in the stand was clear throughout the workshop with many ex -pressing their appreciation of the ongoing work Elster and other manufacturers are undertaking to ensure interoperable solu-tions within Europe.

Carsten lorenz [email protected] Matthew Hallchurch [email protected]

In early May, the European Smart Metering Industry Group (ESMIG) held a workshop in Brussels to consider “Energy Efficiency & Smart Meters – What’s in it for the consumer?”. Throughout the workshop, Elster presented its Smart Metering interoperable gas meter as part of a showcase exhibition.

throughout the day a number of high level speakers, introduced by Elster’s own Frank Hyldmar, in his role as ESMiG Vice-President, discussed the impact of Smart Metering on Europe, how Smart Metering technology can have a positive influence on energy efficiency and how consumers will be able to control their personal energy consumption.

Some 100 participants attended the work-shop which discussed the Smart Metering impact on the Energy Efficiency directive and the benefits to consumers of energy displays, with Krzysztof Gierulski (Policy officer, dG Energy) reinforcing the fact that “the final customer needs information about energy consumption and costs, therefore an interface connected to the Smart Meter is essential.”

Each session was followed by a tour of the first ever Smart Metering Showcase Exhibition which included a demonstration of Elster’s interoperability potential.

the UK energy market is considered to be one of the most complex in Europe, with consumers having the ability to change suppliers with relative ease on a regular basis. While this has had the positive effect of creating a competitive market place, it has also introduced the need for effective interoperability between the wide range of Smart Metering equipment being de -veloped by different metering companies.

to ensure this interoperability, a number of Smart Metering System manufacturers, including Elster, founded the Smart Speci-fication Working Group (SSWG) with the sole intention of standardizing communi-cations between Smart Metering compo-nents.

themis alpha during interoperability test

Gas Smart Meter In-Home Display

In-Home Display

Electricity Smart Meter

Elster diaphragm gas meters with electronic indexes themis alpha and themis plus

STANDARDS 17 Elster-Instromet Profiles 2/2012

The “Protection Profile for the Gateway of a Smart Metering System” and the “Smart Energy” Technical Guideline (TR-03109) are anchored in the new German Energy Industry Act (EnWG). These are the two essential documents defining the future infrastructure for Smart Metering in Ger-many.

This Protection Profile has been available as a final draft since 26 August 2011 and is currently being evaluated and then to be certified by the BSI. It has already been explained in greater detail in Elster Profiles (see “Effects of the new German Energy Industry Act, Data privacy & data security in German smart grids and smart meters” in Profiles 3/2011, Pages 26 – 27).

BSI Protection Profile: the Technical Guideline has had a structural facelift

Smart Energy – it’s all in the name

The Technical Guideline defines “require-ments as regards the interoperability of the Gateway of a Smart Metering System for quantities of substances and energy”, i.e. it stipulates, for instance, in binding manner, the communications protocols and encryption mechanisms which a Smart Meter Gateway (SMGW) must use in future when connected to a Wide Area Network (WAN), a Home Area Network (HAN) and a Local Metrological Network (LMN). An SMGW may, for instance, be part of an electricity meter or a multi-utility controller (MUC) to which gas, water and heat meters, as well as (further) electricity meters, are connected. This is because the EnWG clearly stipulates that there is to be no specific infrastructure for gas.

The revised draft of the “Smart Energy” Technical Guideline (TR-03109) was published at the end of May. On 1 June 2012, it was then presented to the relevant associations at the German Federal Ministry of Economics and Technology (BMWi) along with the German Federal Office for Information Security (BSI). This article summarizes the current status, focussing on future connection of gas meters to metering systems (or Smart Meter Gateways) in accordance with EnWG (German Energy Industry Act).

Gateway and direct environment

WAN

Gateway

HAN

LMN

Meter

Meter

Authorized external entity

Authorized external entity

Consumer

CLS, e.g. solar plant

Protection Profile for the Security Module

Protection Profile for the “Gateway of a Smart Metering System”

Technical Guideline: requirements as regards the interoperability of the Gateway

Security module

CLS, e.g. e-car

18 STANDARDS Elster-Instromet Profiles 2/2012

New features of the Technical Guideline TR-03109an initial draft of the technical Guideline was presented on 10 october 2011. asso-ciations (such as dVGW, FiGaWa, oMS, ZVEi, FNN) had the opportunity to submit comments on the technical Guideline. an extremely wide variety of topics was dis-cussed between BMWi, BSi, associations and manufacturers at several appoint-ments, but certain topics are still being clarified. Consequently, the revised draft of the technical Guideline dated late May 2012 is, unfortunately, still not complete.

the technical Guideline has a new name, “Smart Energy”, and features a new docu-ment structure which is shown in the graphic below.

the following communications protocols were stipulated in binding manner in tr-03109-1 and must be implemented in the SMGW. the following abbreviations are used below: aPP is used in place of application, Presentation and Session layer. tS is the abbreviation for transport layer. PHY represents the Network, Con-nection and Physical layer.

WAN (Wide Area Network)• aPP: CoSEM data objects of an XMl

abstraction layer and web services; content data encryption and signing by means of Cryptographic Message Syntax (CMS)

• tS: transport layer Security (tlS)• PHY: no specifications prescribed in

the technical Guideline; manufacturer-specific, e.g. GSM/GPrS, dSl, PlC

LMN (Local Metrological Network) For wireless communication (unidirectional or bidirectional): • aPP: M-Bus diN EN 13757-3 to oMS • tS: – unidirectional: aES-128-CBC

(encryption) and aES-CMaC (Message authentication Code – MaC), additional counter (transmission counter)

– bidirectional: as for unidirec-tional or tlS

• PHY: Wireless M-Bus EN 13757-4 at 868 MHz supporting oMS operating modes S1, S2, t1, t2

For cable-based communication (bidirec-tional): • aPP: dlMS/CoSEM • tS: tlS • PHY: tCP/iP (iPv4 or iPv6) via rS 485

HAN (Home Area Network) for communication with a remote display unit (e.g. display or PC of the end consumer):• aPP: HttPS (HttP over tlS)• tS: tlS• PHY: Ethernet interface with tCP/iP

support (iPv6 recommended)

HAN for communication with CLS (Controllable Local Systems, e.g. smart household devices, photovoltaic systems):• aPP: no specifications prescribed in

the technical Guideline• tS: tlS• PHY: no specifications prescribed in

the technical Guideline

BSI TR-03109-1Technical Guideline

Smart Meter Gateway (SMGW)

BSI TR-03109-3 Technical GuidelineCommunications

adapters

BSI TR-03109-2Technical GuidelineSecurity module for

SMGW

BSI TR-03109-3 Technical Guideline

Public key infrastructure for SMGW

BSI TR-03109-3Technical Guideline

Cryptographic specifica-tions for SMGW

Draft released for the associations to submit comments

Revised draft announced for June 2012

In preparation

Technical Guideline“Smart Energy”BSI TR-03109

BSI TR-03109-TS-1Test specifications

Smart Meter Gateway (SMGW)

BSI TR-03109-TS-2Test specifications

Security module for SMGW

BSI TR-03109-TS-2 Test specificationsCommunications

adapters

STANDARDS 19 Elster-Instromet Profiles 2/2012

Meters in an lMN (e.g. residential gas meters) must implement one of the lMN communications protocols which have been stipulated in binding manner in order to be able to communicate with an SMGW.

Currently, tr-03109-1 (pages 40 – 41, version 0.50, dated 25 May 2012) still stipulates an exception for bidirectional communication between meters in an lMN and the SMGW when using wireless interfaces, but its use has not yet been specified: “Security of (bidirectional) com-munication in modes S2 or t2 MUSt be implemented by means of tlS (see Chap-ter 3.3.2.1) or symmetric cryptography as described in Chapter 3.3.2.2. Note: the current standardized M-Bus encryption is thus not sufficient but has been extended accordingly. the oMS Group has specified a new “authentication and Fragmentation layer (aFl)” for the technical implementation of this extended encryption procedure ... this oMS aFl layer MUSt be implemented.”

Points in the Technical Guideline which are yet to be decidedthe subject of tariffing in the SMGW and in the meters (gas, water and electricity) which are connected in the lMN and communicate with the gateway is still under discussion: the gas meter in the lMN (e.g. a residential gas meter) too is to be able to form tariffs or to provide its measured values with a timestamp. However, neither the Protection Profile

nor the technical Guideline currently stipulates this in this form.

Furhermore, control of a valve incorporated in the gas meter is still under consideration. according to the current technical Guide-line, the valve is to be regarded as a ClS and thus requires a permanent connec-tion to the SMGW. this cannot be realized when using battery-operated gas meters. one possible solution would be to control the valve via a bidirectional (wireless) lMN interface, which is secured by tlS tr-03109 has been annotated accordingly.

a note has also been added to the com-munications protocol for the cable-based, bidirectional lMN interface defined in tr-03109, since the suggested rS 485 interface only supports connection of meters with constant power supply. there -fore, this interface option would currently be reserved to electricity meters alone.

the Protection Profiles and the technical Guideline can be downloaded from the BSi website: www.bsi.bund.de/dE/themen/SmartMeter/smartmeter_node.html.

Secure connection of gas meters and metering systems in accordance with EnWGin accordance with the current state of knowledge, the three design types illus-trated below showing examples of Elster diaphragm gas meters are possible in future for secure connection of gas meters

Index with integrated communications module

Index with communications module plugged on

Index with IN-Z and connected communications module

to metering systems in accordance with EnWG in Germany. However, here as well, this has yet to be stipulated definitively (e.g. in the form of a statutory ordinance). the most recent member of the family can be seen on the left: the diaphragm gas meter with electronic index and integrated communication. the illustration in the cen-tre shows two diaphragm gas meters with mechanical index and retrofittable com-munications modules: the “Z6” index with pulse output and universal radio module housing (top) and the absolute ENCodEr index with communications module (bot-tom). the illustration on the right shows a diaphragm gas meter with “Z6” index and low-frequency pulse transmitter “iN-Z”, to which a retrofittable communications module can also be connected.

it will be necessary to await the final docu-ments of the technical Guideline (planned for September 2012) along with the out-standing statutory ordinance which shall stipulate, among other things, how remote data transmission from commercial and industrial (C&i) systems is to be dealt with. only then will we be able to define what the Smart Metering infrastructure in Ger-many will look like in the future.

Please do not hesitate to contact us should you have any questions on the subject of the Protection Profile and future connec-tion of gas meters.

dr. daniela lücke-Janssen [email protected]

20 APPL ICATIONS Elster-Instromet Profiles 2/2012

Elster-Instromet has successfully designed and supplied a high-pressure natural gas meter proving facility for GAIL in Hazira, Gujarat, India. This project includes 14 Elster reference meters and was constructed in the first quarter of 2012. NMi/VSL is the metrol-ogy partner for this high-profile project and will be responsible for approval of the design, evaluation and metrological supervision of the site and facility.

GAIL reaffirms its trust in Elster-Instromet:

Prestigious gas calibration facility project completed in India

after more than eight years of intense negotiation and tendering, Elster-instromet secured the contract for the prestigious Gail project at the end of November 2010. the facility has been constructed for M/s. Gail india limited, which is majority-owned by the Government of india and is the leader in india’s gas transportation market.

Gail has a network of more than 9,500 km of gas pipeline across india transporting over 170 MMSCMd of gas. the company is currently undergoing a period of major expansion with plans to extend its pipe-line network to around 25,000 km in the very near future. the new site being con-structed at Gail’s Hazira terminal will provide a high-pressure ultrasonic and turbine flow meter calibration and proving facility for natural gas applications.

the awarding of this contract to Elster-instromet recognized the company’s vast experience and proven track record in delivering market-leading measuring and calibration technology and included the design, supply, construction, testing and commissioning of the new facility.

Elster-instromet has been a leading sup-plier of major instruments to Gail since the latter was formed in 1984-85. inciden-tally, Elster-instromet also entered the indian market in the year 1985 and since then has been a partner in the progress of Gail. Measuring system with Q.Sonic and SM-RI-X

APPL ICATIONS 21 Elster-Instromet Profiles 2/2012

“as the market continues to evolve, the large number of players operating in this space has meant it has become even more competitive,” says Mr. Mrunal Gandhi, Managing director at Elster-instromet india Pvt. ltd. “We are delighted to have been selected as the preferred supplier for the Gail facility as it provides a significant opportunity to demonstrate our unrivalled expertise in this field.”

the Gail facility is due to be inaugurated soon and will comprise a total of seven parallel streams. Four streams of 12'' 600# and one stream each of 8'' 600# and 4'' 600#, all equipped with turbine meters and ultrasonic meters in series. the 7th stream is a 2'' 600# line equipped with two 2'' turbine meters. a C9 gas chroma-tograph EnCal 3000 will also be deployed in order to analyze the heating value. this capability is a first for india.

Assembly of pipe systems in the new meter proving facility

Gas chromatograph EnCal 3000 (C9 version)

22 APPL ICATIONS Elster-Instromet Profiles 2/2012

able to calibrate turbine gas meters and ultrasonic gas meters ranging from 4'' to 20'' and from #300 to #600 with appro-priate approvals, the new facility has been approved by NMi for high-pressure meter calibration, as well as for establishing the accuracy, repeatability and uncertainty of turbine gas meters and ultrasonic meters. the operating pressure ranges from 45 to 60 bar. Elster-instromet’s universally acclaimed SM-ri-X turbine meter provides the facility’s master meter, with the Q.Sonic ultrasonic meter installed in series to sup-port and monitor SM-ri-X reference turbine meters.

“this configuration will provide results that are the best that can be achieved any-where in the world,” continues Mr. Gandhi. “a data acquisition system has also been implemented at the Gail facility and is being supported by our innovative engi-neers from Essen in Belgium. a key point is that traceability for the Hazira facility will be linked directly to the international har-

monized reference value of the PtB/NMi and lNE standards bodies. this will ensure verification of the results at international level and will hence reduce the likelihood of potential (re-)calibration errors recorded at other internationally recognized facili-ties such as Pigsar, Westerbork, Bergum and transcanada Calibrations, which also use this reference value.”

With increasing demand for measurement accuracy and repeatability, and Gail’s commitment to delivering the best avail-able technology to india’s gas industry, it was important that the company partner with a supplier with a proven track record in natural gas calibration technology. Elster-instromet’s more than 170 years’ experience with low-pressure gas calibra-tion systems, 40 years’ experience in high-pressure gas calibration technology and long-term relationships with metrology institutes worldwide secured its position as the preferred partner for this prestig-ious project.

Parallel measuring paths using ultrasonic gas meters with shut-off valves

the Elster-instromet Group had already supplied the first metering system to Gail in 1984-85. Now this meter calibration facility, which was constructed in just twelve months, is on course to become india’s leading gas metering calibration and testing facility.

Shivdas Nair [email protected]


after this, he became service engineer at aBB Process analytics where the real foundation of his career was laid. Here, he worked with gas chromatographs, infrared absorption analyzers and mass spectrometers. this position involved working abroad, mostly alone but also in teams, allowing Hans-Peter to gain invaluable experience. For example, he often had to get new systems up and running within a short timeframe, which is an important skill in today’s working world.

Following this job, he was asked to join a small company (two persons), called aSaP BV, where he continued his work as a service engineer. Here, Hans-Peter first saw the potential of micro GC analysis. He was impressed by the speed and accuracy of this technique.

in the next 11 years, aSaP grew to 14 employees and Hans-Peter assumed more and more responsibilities in the field of services and service contracts within the company.

Hans-Peter Smid (graduate engineer, 39) now holds the position of product manager at Elster-instromet NV/Sa in Essen (Belgium).

if there are any questions which are product-relevant, please contact: [email protected]

Hans-Peter Smid

Welcome to the new Gas Quality Analysis Product Manager

Metering Europe 2012:

Interoperable by design

Visit Elster at Metering Europe 2012

9 – 11 OctoberAmsterdam, booth B10

Once again, Elster will be present at Metering Europe in Amsterdam. As last year, Elster will be a Gold Sponsor of the event. The main message for us this year is “Interoperable by design” and how we are present in every step of the energy value chain. We will also have six solutions on the booth. Our experience areas show you solutions about Elster Electricity, Gas, Water, Multi-Utility, Energy Management and Privacy Enhancing Technology.

After studying analytical process and laboratory instrumentation, Hans-Peter Smid worked at DSM as a service engineer for online process analytical equipment for one year.

24 GROUP Elster-Instromet Profiles 2/2012

in this special little country, you will find Elster NV/Sa, which emerged in 2009 from the merger of the former Elster sub-sidiaries Elster-instromet in Essen, Elster Cogégaz in liège and Elster Metering in Brussels. to complete the business units of Elster Belgium, Elster EnergyiCt in Kortrijk must be mentioned as well. With the merger of the two companies from Essen and liège in 2009, a Shared Service Center was set up in Essen, which is responsible for human resources, finance and it.

the Elster business unit “Gas international” in Belgium shall be introduced here in detail: two languages, two cultures and two sites for the gas business with a com-pletely different background are now inte-grated into a single entity, even though their areas of responsibility are quite different.

Essen is the former headquarters of instromet. it is located 50 km north of antwerp near the dutch border. the company instromet (iNstruments for the Stro[stream] MEasuring technology) was founded in 1966. it was purchased by rockwell in 1971 and then by G.F. Fischer in 1975. the Essen site, which was estab-lished in 1970, became the headquarters of instromet and the central office of the international sales department. in addi-tion, it is active in d&d, engineering and the production of stations and systems.

Series: Introducing you to a company with tradition and future – Elster

Elster NV/SA Belgium – world market leader for integrated metering solutions

the company is market leader in the field of gas production and gas transport.

in 2000, following the takeover by Elster, and in the following years, Essen inte-grated several fields of activity from the Netherlands. these included the produc-tion of ultrasonic meters from instromet dordrecht, the low- and medium-pressure stations business from iGa Waalwijk and the division of gas utilization products for the dutch market from Ermaf rotterdam.

liège is the former Elster site in Belgium. Founded in 1919, the company gained profound expertise and earned itself a

reputation in the field of gas measure-ment and control on the local market under the name Cogégaz (Constructions Générales Électriques). this company was taken over by Elster in 1991. although Cogégaz had also been active in the export business, Elster concentrated its activities on the Belgian market: residen-tial, commercial and industrial gas metering and gas utilization.

With close to 160 employees, the Essen site is the heart of integrated Metering Solutions: whether it is single-stream low-pressure stations with compact conver-

Belgium is a special country. It is not very big, but has three regions: first there is the region around the capital Brussels in the middle of the country, where two official languages, Dutch and French, are spoken. Then there is the Flemish region in the north, where Dutch is spoken, and finally the Walloon region in the south, where French and German are spoken. So we are talking about three language communities, six governments and a lot of politicians.

Essen site in Belgium

GROUP 25 Elster-Instromet Profiles 2/2012

sion devices or complex high-pressure stations with redundant measuring paths, gas quality analysis and visualization, data acquisition and diagnostic systems – Elster Belgium offers the complete process chain of system and plant development. From concept to commissioning – the customer can rely on high quality. the broad product portfolio includes offshore metering systems and gas metering sta-tions for high-pressure pipelines and compressor stations, power plants, lNG terminals and underground gas storage facilities, industrial plants or biogas plants. Highlights are low-pressure and high-pressure test rigs – here Elster-

instromet is Number one! these test rigs cover all applications in the field of gas metering from fiscal measurement to cus-tody transfer measurement and industrial measurement. these include, among others, gas meters, pressure and tempe-rature control, filtration, odorizing, gas quality analysis, conversion and computer information systems. Whether allocation measurement, pressure control, flow rate control, odorizing, filtration or temperature control: Elster has the right solution for natural gas, liquefied natural gas, indus-trial gases, syngas, biogas and shale gas.

Planning and design takes place here

Border transfer station at the Turkish-Greek border

Furnace with self recuperative burners Ecomax and burner control units BCU

Liège site in Belgium

the complete solutions from a single source offer reduced measurement uncertainty, maximized reliability of measuring results and comprehensive service. in particular, Elster Belgium can offer smart products and solutions with low operating costs.

an absolutely optimized application is the so-called “total Energy Concept”, which is recommended for the field of custody transfer gas measurements. Here, two different measuring principles (turbine and ultrasound) are applied in series and two generated volumes are compared in real time. Moreover, the velocity of sound (VoS), which results from

26 GROUP Elster-Instromet Profiles 2/2012

measurement with an ultrasonic gas meter, is compared with the calculated value, which is obtained on the basis of the gas quality analysis according to aGa 10.

Elster is one of the few companies world-wide that is able to offer a complete integrated metering solution due to an

optimal product selection: highest meas-urement accuracy, high availability and low maintenance can thus be realized.the main customers are: the Middle East, algeria, China and the local markets in the Netherlands and Flanders, with inter-national key accounts in Japan, China, Saudi arabia and the United Kingdom.

a recent highlight is the new generation of the Q.Sonicplus, which includes a new generation of transducers based on 25 years of experience with custody trans-fer ultrasonic gas meters and of course electronic components that have been designed for completely new challenges.

the liège site with 45 employees is active in the fields of residential gas meters and gas utilization all over Belgium. in the French-speaking part of the country, liège is also the preferred partner when it comes to services such as production and main-tenance of low- and medium-pressure stations. in the past 15 years, Elster’s mar-ket share in the field of residential meters has risen steadily. today, Elster is one of the major suppliers of the high-quality residential gas meters BK-G4 and BK-G6. two years ago, Elster participated in the development and proof of concept for smart electricity and gas meters under the leadership of Energy iCt.

Currently, a smart meter pilot test for electricity meters is being carried out, whose results are expected in September. in addition, Elster was able to win a sig nificant portion of the main Belgian Meter tender for residential, commercial and industrial gas meters, including an absolute ENCodEr solution for industrial diaphragm meters.

another focus for the liège site is the division of gas utilization products for Belgium. in addition to the distribution of gas metering equipment and Elster Kromschröder components for gas utili-zation, Elster has obtained pioneering expertise in burner and project sales in the past years. Many furnace manufacturers for the steel industry are located in the south of Belgium. Currently, Elster delivers almost 2,000 radiant tube burners in cooperation with Elster lBE in Wuppertal.

Finally, the station and maintenance activities for the local French-speaking part of the country show high service levels, which have made Elster one of the most important suppliers for the local energy utilities. this is also due to the fact that Elster offers a unique 24/7 service.

So, in a nutshell: Elster is well positioned in Belgium and provides customized, smart high-end services and solutions all over the world.

Peter Merckaert [email protected]

Production: here ultra-sonic gas meters and measuring systems are produced

Redundant gas quality analysis system with EnCal 3000


North Sea Flow Measurement Workshop 2012

Elster-Instromet shows its importance

NEl in conjunction with the Workshop Committee invites flow metering special-ists from all over the world to participate in the world’s premier flow metering event, marking the milestone of its 30 years of presenting the latest in flow measurement technology.

in line with its long standing tradition, Elster-instromet attends this workshop every year. this year, it will be presenting a complete demo installation including key products for natural gas measurement like the bidirectional turbine gas meter SM-ri-2, where pressure drop is reduced by up to 50% compared to traditional

The North Sea Flow Measurement Workshop is the world’s premier flow metering event, attracting leading flow measurement specialists and manufacturers from around the globe to meet and discuss the latest measurement issues relating to oil and gas production.

turbine meters, or the next generation 6-path ultrasonic flow meter Q.Sonic plus. other highlights are the FC1 flow computer and the iSS plus supervisory software as well as the EnCal 3000 gas chromatograph. these are products that Elster-instromet can supply as stand-alone products or as integrated metering systems.

the new Q.Sonicplus includes a localized full colour display unit with touch screen, all-metal titanium transducers, multi-point calibration (achieving a 0.1% meter error), along with the SonicExplorer PC user soft-ware. the unit is Mid approved and meets the requirements of aGa-9 and oiMl r-137-1.

Full information on the Workshop can be found at www.tuvnel.com

Jacob Freeke [email protected]

30th International Workshop23 – 26 October 2012

Atrium, booth JFairmont St AndrewsSt Andrews, Scotland

Vital Connections

Elster GmbHSteinern Strasse 19–2155252 Mainz-Kastel, Germanywww.elster-instromet.com

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