International Workshop on Water and Heat MetersInternational Workshop on Water and Heat Meters
Identification / marking of cartridge meters
Braunschweig – 23 Oct. 2013Jürgen Westphal – Sensus GmbH Ludwigshafen
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Jürgen Westphal
Company: Sensus GmbH Ludwigshafen
Profession: Dipl. Ing. (Process engineering technology)
Current Job: Director Metrology /Head of laboratory
Age: 52
Committees:
− DIN NA Water Meters, Mirror committee CEN TC 92
Author
− DIN NA Water Meters, Mirror committee CEN TC 92
− CEN TC92
− DVGW W TK-3-3 Water Measurement
W PK-3-3-5
− VDDW TC Water and Heat Meters
− AQUA-standardization group
− PTB VV-AA Water
− WELMEC WG11
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Contents
1. Introduction and Background
2. Identification and marking - Defintion and content in the EN14154-1:2005+A2:2011
- Possible solutions / examples EN14154-2:2005+A2:2011
3. Summary and Outlook
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Introduction and background
• The cartridge itself is not a water meter in sense of the MID, but merely aassembly group, which is manufactured in a conformity assessment accordingmodule D or H1 respectively.
• Lateron the selfcontained cartridge will be mounted in a housing to a completemeter by qualified and educated installer.
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A conformity can only be declared by a manufacturer for acomplete meter!
Terms and definition -- overviewEN 14154-1:2005+A2:2011
3.8 cartridge metertype of water meter fitted into a closed conduit by means of an intermediate fitting called a connection interface.NOTE The inlet and outlet passages of the meter and the connection interface are either concentric or axial as detailed in EN 14154-2:2005+A2:2011, Annex B.3.9 cartridge meter connection interfacepipefitting specific to the connection of an axial or concentric cartridge meter
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pipefitting specific to the connection of an axial or concentric cartridge meter3.10 meters with exchangeable metrological unitmeter with Q3 ≥ 16 m3/h comprising a connection interface and an exchangeable metrological unit, from the same pattern approval, i.e. from the identical manufacturer as a matter of principle3.11 exchangeable metrological unitself contained unit comprising a measurement transducer and an indicating device or alternatively a calculator including indicating device where applicable3.12connection interfaces for meters with exchangeable metrological unitspipefitting specific to the connection of exchangeable metrological units
Meter with exchangeable metrological unit/module
Exchangeable metrological unit/module
EN 14154-1:2005+A2:2011
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Meter with exchangeable metrological unit/module
exchangeable metrological
unit/module
EN 14154-1:2005+A2:2011
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5.6.1 Instructions for the installation of cartridg e meters
Follow the installation instructions of the manufacturer without exception at all times. In the case of them not being available the following principles shall be adhered to:a) use exclusively original sealing rings / gaskets as supplied by manufacturer together with the meters;b) remove old gaskets immediately after old cartridge meters have been removed;c) check the relevant sealing surfaces and clean them if necessary in order to make sure the sealing is
functioning correctly and that there is no internal bypass leak leading to incorrect measurements;d) check new seals before applying them taking the positioning instructions of the manufacturer into
account;e) check that cartridge meters match the connection interfaces they are supposed to be fitted into;
EN 14154-1:2005+A2:2011
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e) check that cartridge meters match the connection interfaces they are supposed to be fitted into;f) using on installation other seals than the ones provided by the manufacturer like tape etc. as well as
applying grease as lubrication for threaded connections shall be avoided;g) if gaskets need to be lubricated make sure at all times that you use a lubricant approved for the material
of the gasket as well as for its contact with potable water only;h) the interchange of cartridge meters should only be undertaken by trained people.
5.6.2 Unequivocal coding of cartridge meters and th eir related connection interfaces
Unequivocal coding of cartridge meters and their related connection interfacesConnection interfaces and related cartridge meters have to be marked with an identical code as defined in Annex B. That code has to be checked prior to installing cartridge meters into their related connection interfaces:a) on cartridge meters the code shall be marked on the surface;b) on the connection interfaces the code shall be visible after removal of the cartridge
meter;
EN 14154-1:2005+A2:2011
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meter;c) the code shall be indelible;d) code for cartridge meters maximum XXX alphanumer ical;e) the codes have to be laid down in either the relevant EC-type examination certificates or EC-design examination certificates
Unequivocal coding of cartridge meters and their re lated connection interfaces
Chrome-facing
Single Piece Connector
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Cartridge
Single Piece Connector
Unequivocal coding of cartridge meters and their related connection interfaces
After dismounting the cartridge meter, the threedigit alpha numeric code must be fully visible
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digit alpha numeric code must be fully visible
Unequivocal coding of cartridge meters and their related connection interfaces
Three-digit alpha numeric code within theSingle-piece-connector (housing)
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Three-digit alpha numeric code outside of the
Single-piece-connector (housing)
Connection interface — solution for cartridge metersSelection of concentric connection interfaces
IST MET
MUK
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TE1
MOCPCC
Connection interface — solution for cartridge meters
Selection of axial connection interfaces
MB3
A34
M7L
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A1
MB2DM1
Unequivocal coding of cartridge meters and their related connection interfaces
Unequivocal three-digit alpha-numeric code on the dialface of the cartridge or the register
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Peculiarity with the connection interface CRI!!
Sensus
Hydrometer
(MOM)
Wehrle
ElsterZenner
NZR
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WehrleNZR
Marking of the housing , headring and cartridge with CRI !!!
Peculiarity with the connection interface CRI!!
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Summery and outlook
To use the measuring cartridge/metrological module in compliance to the MID, we must consider the following points:
How can we ensure that the measuring cartridge + housing (+ head-/screwring) are mounted properly and with the right interface identification?
• We need to sensitize the customer / installer for the correct usage
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• We need to sensitize the customer / installer for the correct usage• We need to educate and certify our customers/installers and take them into
the responsibility.• We need to supervise and audit the installers• A conformity can only be declared by a manufacturer for a complete meter!
Thanks for your attentation
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