Heat meters - Checklist documenting the relationship between the Directive 2004/22/EC (MID) and EN 1434:2007

This Technical Report constitutes a checklist to show the appropriate coverage of the relevant Essential Requirements for Heat Meters in the Measuring Instrument Directive 2004/22/EC with the technical solutions in EN 1434:2007.
The checklist indicates that in EN 1434 you have standardized solutions that:
-   are one way of showing conformity to the MID;
-   make it possible to combine sub-assemblies of different brands;
-   make it possible to replace an installed sub-assembly with a sub-assembly of another brand.

Wärmezähler - Prüfliste, die den Zusammenhang zwischen der Europäischen Messgeräte-Richtlinie 2004/22/EG und EN 1434:2007 darstellt

Compteurs d'énergie thermique - Liste des points de vérification des liens entre la directive 2004/22/EC (MID) et EN 1434:2007

Toplotni števci - Kontrolni seznam za dokumentiranje povezave med Direktivo 2004/22/ES (MID) in EN 1434:2007

To tehnično poročilo je kontrolni seznam, ki kaže ustrezno vključitev ustreznih bistvenih zahtev za toplotne števce iz Direktive 2004/22/EC o merilnih instrumentih v tehnične rešitve v EN 1434:2007.
Kontrolni seznam kaže, da so v EN 1434 standardizirane rešitve, ki:
 na en način prikazujejo skladnost z MID;
 omogočajo kombiniranje podsklopov različnih znamk;
 omogočajo zamenjavo nameščenega podsklopa s podsklopom druge znamke.

General Information

Status
Published
Publication Date
14-Sep-2010
Current Stage
9093 - Decision to confirm - Review Enquiry
Completion Date
10-Nov-2021

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SLOVENSKI STANDARD
SIST-TP CEN/TR 15760:2011
01-maj-2011
Toplotni števci - Kontrolni seznam za dokumentiranje povezave med Direktivo
2004/22/ES (MID) in EN 1434:2007

Heat Meters - Checklist documenting the relationship between the Directive 2004/22/EC

(MID) and EN 1434:2007
Wärmezähler - Prüfliste, die den Zusammenhang zwischen der Europäischen
Messgeräte-Richtlinie 2004/22/EG und EN 1434:2007 darstellt

Compteurs d'énergie thermique - Liste des points de vérification des liens entre la

directive 2004/22/EC (MID) et EN 1434:2007
Ta slovenski standard je istoveten z: CEN/TR 15760:2010
ICS:
17.200.20 Instrumenti za merjenje Temperature-measuring
temperature instruments
SIST-TP CEN/TR 15760:2011 en

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

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SIST-TP CEN/TR 15760:2011
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SIST-TP CEN/TR 15760:2011
TECHNICAL REPORT
CEN/TR 15760
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
September 2010
ICS 17.200.10
English Version
Heat meters - Checklist documenting the relationship between
the Directive 2004/22/EC (MID) and EN 1434:2007

Compteurs d'énergie thermique - Liste des points de Wärmezähler - Prüfliste, die den Zusammenhang zwischen

vérification des liens entre la directive 2004/22/EC (MID) et der Europäischen Messgeräte-Richtlinie 2004/22/EG und

EN 1434:2007 EN 1434:2007 darstellt

This Technical Report was approved by CEN on 31 May 2008. It has been drawn up by the Technical Committee CEN/TC 176.

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 15760:2010: E

worldwide for CEN national Members.
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CEN/TR 15760:2010 (E)
Contents Page

Foreword ..............................................................................................................................................................3

1 Scope ......................................................................................................................................................4

2 General explanations ............................................................................................................................4

3 Text of Annex ZA in EN 1434:2007 .......................................................................................................5

4 Table showing the correspondence between EN 1434 and MID .......................................................5

5 Table showing the correspondence between MID and EN 1434:2007 .......................................... 13

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SIST-TP CEN/TR 15760:2011
CEN/TR 15760:2010 (E)
Foreword

This document (CEN/TR 15760:2010) has been prepared by Technical Committee CEN/TC 176 “Heat

meters”, the secretariat of which is held by SIS.

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.

The 2007 edition of EN 1434 was written to be harmonized to MID. After the CEN consultant has given a

positive assessment for this standard it is referred in the EU Official Journal (published 2007-07-14) as a

standard harmonized to MID. The following checklist shows the most important explanations to this

harmonisation work under the scope how the requirements coming from MID are complied by EN 1434:2007.

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CEN/TR 15760:2010 (E)
1 Scope

This Technical Report constitutes a checklist to show the appropriate coverage of the relevant Essential

Requirements for Heat Meters in the Measuring Instrument Directive 2004/22/EC with the technical solutions

in EN 1434:2007.
The checklist indicates that in EN 1434 you have standardized solutions that:
 are one way of showing conformity to the MID;
 make it possible to combine sub-assemblies of different brands;

 make it possible to replace an installed sub-assembly with a sub-assembly of another brand.

2 General explanations

MID and EN 1434 have not only metrological requirements, but also other requirements that help the user to

obtain a correct measuring result without unreasonable demands. In the MID this is expressed as essential

requirements.

Following EN 1434 means that the signal interfaces and the relevant part of the dimensions between sub-

assemblies are standardized to ensure that you can use a mixture of sub-assemblies from different

manufacturers. It also means that you in an installation can replace a unit with a new unit from another

manufacturer that follows EN 1434. In this sense this EN standard gives defaults about the conditions and

technical contents for the compatibility between sub-assemblies from different manufacturers. This checklist

shows with the tables under Clauses 4 and 5 how the compliance with the requirements according to Article

4(b) in MID are provided by following the EN standard.

If the meter does not follow that standardization in EN 1434, the EC type examination certificate must have

another information about how the sub-assemblies are compatible and replaceable with other sub-assemblies.

This checklist is helpful for conformity assessments to ensure that the essential and specific requirements of

the MID are fulfilled by the meter or its sub-assemblies, i.e.:
MID Annex I, 7.2

A measuring instrument shall be suitable for its intended use taking account of the practical working conditions

and shall not require unreasonable demands of the user in order to obtain a correct measurement result.

MID Annex I, 7.5

A measuring instrument shall be robust and its materials of construction shall be suitable for the conditions in

which it is intended to be used.
MID Annex B Clause 3

... This supporting evidence shall mention any relevant documents that have been applied, in particular where

the relevant documents referred to in Article 13 have not been applied in full, ...

MID Annex B, 4.3

The notified body shall for the specimens carry out the appropriate examinations and tests, or have them

carried out, to check whether, where the manufacturer has chosen not to apply the solutions in the relevant

documents referred to in Article 13, the solutions adopted by the manufacturer meet the corresponding

essential requirements of this Directive.
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CEN/TR 15760:2010 (E)
MID Annex B, 5.2

... The certificate or its annexes shall contain all relevant information for conformity evaluation and in-service

control...

in the case of a sub-assembly, all necessary information to ensure the compatibility with other sub-assemblies

or measuring instruments
MID Annex MI 004 Clause 7

The provisions for sub-assemblies may apply to sub-assemblies manufactured by the same or different

manufacturers.

The following explanations show how the demands given by MID are complied by the EN 1434:2007 standard.

3 Text of Annex ZA in EN 1434:2007
Annex ZA

Relationship between this European Standard and the Essential Requirements of EU Directive

2004/22/EC, MID

This European Standard has been prepared under a mandate given to CEN by the European Commission to

provide a means of conforming to Essential Requirements of the New Approach Directive 2004/22/EC on

measuring instruments.

Once this standard is cited in the Official Journal of the European Communities under that Directive and has

been implemented as a national standard in at least one Member State, compliance with all the normative

clauses in Parts 1, 2, 4 and 5 of this standard confers, within the limits of the scope of this standard, a

presumption of conformity with the relevant Essential Requirements of that Directive and associated EFTA

regulations.

WARNING — Other requirements and other EU Directives may be applicable to the product(s) falling within

the scope of this standard.
NOTE A corresponding Annex is included in EN 1434 Parts 1, 2, 4 and 5.
4 Table showing the correspondence between EN 1434 and MID
to ensure that the requirements of this EN standard are supported in MID
Clause(s)/subclause(s) of this EN Requirements of MID Qualifying remarks/Notes
standard
PART 1 Articles,
ANNEX I (ESSENTIAL
REQUIREMENTS) = AI,
Specific Requirements = MI-004
3 Types of instrument Article 5; MI-004 DEFINITIONS
3.6 Equipment under test (EUT) Article 9; MI-004
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Clause(s)/subclause(s) of this EN Requirements of MID Qualifying remarks/Notes
standard

4 Terms, definitions and symbols MI-004 DEFINITIONS MI-004 § 7.1 has a limit of 5 %

for class 1 flow sensors. This is

4.9.5 Maximum permissible error, MI-004 § 3, § 7, § 7.1 equal to 3,5 % for the widest

dynamic flow range q /q =
p i
250:1 specified in EN 1434-1
9.2 Values of MPE
5 Rated operating conditions MI-004 §1 Rated operating cond.
5.1 Limits of temperature range 1.1 Temperature of the liquid
1.1 Temperature differences
1.3 Flow rates
5.2, 7.2 Limits of temp. difference
1.4 Thermal power P
1.2 Pressure of the liquid
5.3 Limits of flow rate
-/- (no counterpart)
5.4 Limits of thermal power
5.5 Max. adm. working pressure
5.9 Max. pressure loss
6 Technical characteristics
6.1 Materials and construction AI § 7.5
6.1.4 Supplementary device AI § 8.1
6.2 Req. outside limits of flow rate AI § 7.3
6.3 Display AI § 10.5
6.3.1 Joules / Wh AI § 9.7
6.3.2 Numerical stored AI § 9.5
6.3.3 Easily read AI § 10.2
AI § 10.2
6.3.4 Display figures > 4 mm In EN 1434-1 without overflows
AI § 10.2, AI § 9.7 of indication at continuous
operation for at least 3 000 h at
6.3.5 Decimal divider
AI § 10.2 upper limit of thermal power,
the progress of accumulated
6.3.6 Roller type
energy in correspondence to at
AI § 10.2
least one digit of the lowest
6.3.7 Overflow / resolution
significance of the display
AI § 4, AI § 7.2
6.4 Protection against fraud AI § 7.1, AI § 8.1, AI § 8.2, AI § 8.3
6.5 Supply voltage AI § 7.2
6.6 Qualifying immersion depth AI § 7.2
6.7 Pocket influence on temp. sensor AI § 7.2
7 Specified working range MI-004 § 1 In MI-004 § 1.1 the minimal
temp. difference is 3 K; in
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Clause(s)/subclause(s) of this EN Requirements of MID Qualifying remarks/Notes
standard
EN 1434-1:2007, 7.2 the
lowest value of min. temp. diff.
is 1 K, but 3 K is the lowest
value recommended for
heating purposes.
8 Heat transmission formula AI § 7.2
9 Metrological characteristics
9.1.1 Classes MI-004 § 2
9.2.1 MPE for complete meter MI-004 § 3
9.2.2.1 MPE for calculator MI-004 § 7.3 In MI-004 § 7.1 is a limit to 5 %
for class 1 flow sensors; in
EN 1434-1 this real limit is
9.2.2.2 MPE for temp. sensor. pair MI-004 § 7.2
3,5 %, regarding to the widest
dynamic flow range
9.2.2.3 MPE for flow sensor MI-004 § 7.1
q /q = 250:1
9.3.1 “arithmetic sum” MI-004 § 3 p i
10 Environmental classification AI § 1.3.1 has other limits for
upper and lower ambient
10.2 A Domestic indoor AI § 1.3.3: E1 & § 1.3.1 temperatures (table);
EN 1434-1 has 5 – 55 °C
10.3 B Domestic outdoor AI § 1.3.3: E1 & § 1.3.1
resp. - 25 – 55 °C resp. 5 –
55 °C
10.4 C Industrial use AI § 1.3.3: E2 & § 1.3.1

11 Heat meter specification AI § 7.2, § 9.3, MI-004 & § 6 & 7.5 Relevant parts of

EN 1434-1:2007, Clause 11
can be used to ensure that the
instrument is suitable for the
intended use acc. to AI § 7.2
12 Info to be delivered with meter AI § 9.3
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Essential requirements Clause(s)/subclause(s) Qualifying remarks/Notes
(ERs) of MID of EN 1434:2007
PART 2
3 Temperature sensors
3.1 General
3.2 Mechanical design AI § 7.2, AI § 7.5 Relevant parts of
EN 1434-2:2007, Clause 3 can
3.3 Platinum temperature sensors AI § 7.2, AI § 7.5 be used to ensure that the
instrument is suitable for the
intended use acc. to AI § 7.2
3.3.1 Spec.def. for 2-wire sensors AI § 7.2, AI § 7.5
and that it is suitable for the
conditions in which it is
3.3.2 Resistance characteristics AI § 7.2, AI § 7.5
intended to be used acc. to
AI § 7.5
3.3.3 Signal leads AI § 7.2, AI § 7.5
3.3.4 Temp. sensors for 2-wire meth. AI § 7.2, AI § 7.5
3.3.5 Temp. sensors for 4-wire meth. AI § 7.2, AI § 7.5
3.3.6 Thermal response time AI § 7.2, AI § 7.5
3.4 Other temperature sensors AI § 7.2, AI § 7.5
4 Flow sensor
4.1 Max.adm. working pressure MI-004 § 1.2 Relevant parts of
EN 1434-2:2007, Clause 4 can
be used to ensure that the
4.2 Sizes and dimensions AI § 7.2
instrument is suitable for the
intended use acc. to AI § 7.2
4.3 Test signal output AI § 7.6, AI § 12
4.4 Adjusting device
5 Calculators
5.1 Mechanical dimensions AI § 7.2 Relevant parts of EN 1434-
2:2007, Clause 5 can be used
to ensure that the instrument
5.2 Terminals – spec. and identific. AI § 7.2
is suitable for the intended use
acc. to AI § 7.2
Batteries AI § 7.2
Dynamic behaviour AI § 7.2
Test signal output AI § 7.6, AI § 12
24 h interruption in supply AI § 6
6 Complete meter AI § 7.2
7 Interfaces between sub-assemb. AI § 7.2
8 Marking & security seals
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Essential requirements Clause(s)/subclause(s) Qualifying remarks/Notes
(ERs) of MID of EN 1434:2007
8.1 Marking AI § 9
8.1.2 Temp. sensor pair
Supplier AI § 9.1 AI § 9.1 addit. demands EC-
type examination certificate
Type [year] (incl. Ptxxx) AI § 9.1, MI-004 § 7.5 number resp. EC-design
examination number
Temp limits MI-004 § 7.5
Temp. diff limits MI-004 § 7.5
Max adm. working pressure AI § 7.2
Flow or return sensor if needed AI § 7.2
8.1.4 Flow sensor
Supplier AI § 9.1
Type, (year) id MI-004 § 7.5
Meter factor MI-004 § 7.5 AI § 9.1 addit. demands EC-
type examination certificate
Limits of temperature MI-004 § 7.5 number resp. EC-design
examination number
Limits of flow rate MI-004 § 7.5
Direction of flow MI-004 § 7.5
g), h) Max adm. and nomin. pressure MI-004 § 7.5
i) Accuracy class MI-004 § 7.5
j) Environmental class AI § 9.1
k) Liquid if other than water AI § 9.1
j) Voltage level for external AI § 9.1
power supply
8.1.5 Calculator
Supplier AI § 9.1
Type, (year,) serial number AI § 9.1
Type of temp. sensors MI-004 § 7.5 AI § 9.1 addit. demands EC-
type examination certificate
Limits of temperature MI-004 § 7.5 number resp. EC-design
examination number
Limits of temp.diff MI-004 § 7.5
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Essential requirements Clause(s)/subclause(s) Qualifying remarks/Notes
(ERs) of MID of EN 1434:2007
Meter factor for flow sensor MI-004 § 7.5
Flow sensor in flow or return MI-004 § 7.5
Environmental class AI § 9.1
Liquid if other than water AI § 9.1
j) Voltage level for external AI § 9.1
power supply
8.1.4 Complete meter
Supplier AI § 9,1
Type, (year,) serial number AI § 9.1
Limits of temperature MI-004 § 6 AI § 9.1 addit. demands EC-
type examination certificate
Limits of temp. diff MI-004 § 6 number resp. EC-design
examination number
Limits of flow rate MI-004 § 6
In flow or return MI-004 § 6
Direction of flow MI-004 § 6
h), i) Max adm. and nomin. pressure AI § 9.3
j) Accuracy class MI-004 § 6
k) Environmental class AI § 9.1
l) Liquid if other than water AI § 9.1
m) Voltage level for external AI § 9.1
power supply
8.2 Sites for marking AI § 8.2, AI § 8.3, AI § 9.1 Components may be
electronic devices and
software storages
8.3 Security seals AI § 8.2, AI § 8.3, AI § 9.1
PART 4
4 Requirements AI § 1.1, AI § 1.2,
MI-004 § 3, § 4, §5, § 7.1, § 7.2, §
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Essential requirements Clause(s)/subclause(s) Qualifying remarks/Notes
(ERs) of MID of EN 1434:2007
7.3, § 7.4
5 Specific. of operating conditions
5.1 Rated operating conditions MI-004 § 1
5.2 Reference conditions
5.3 Ref. values for the measurand
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Essential requirements Clause(s)/subclause(s) Qualifying remarks/Notes
(ERs) of MID of EN 1434:2007
6 Tests and measurements
6.1 General
6.2 Test programme
6.3 Uncertainty of test equipment
6.4 Performance test AI § 1.1 & MI-004 § 3, 7.1, 7.2 & 7.3
6.5 Dry heat AI § 1.3.1
6.6 Cold AI § 1.3.1
6.7 Static dev. in supply voltage AI § 1.3.4
6.8 Durability test MI-004 § 5
6.9 Damp heat cyclic AI § 1.4.2
6.10 Short time red. in supply AI § 1.3.3 b
6.11 Electrical transients AI § 1.3.3 b
6.12 Electromagnetic field AI § 1.3.3 b
6.13 Electromagn. field (digital) AI § 1.3.3 b
6.14 Electromagn. / conduced AI § 1.3.3 b
6.15 Electrostatic discharge AI § 1.3.3 b
6.16 Static magnetic field MI-004 § 4.1
6.17 Electr. mag. field at mains AI §1.3.4 & MI-004 § 4.1
frequ.
AI § 7.2
6.18 Internal pressure
AI § 7.2
6.19 Pressure loss
(acc. to EMC Directive)
6.20 Electromagnetic emission
AI § 6
6.21 24 h interruption in supply
AI § 1.3.4
6.22 Flow disturbances
7 Documentation Annex B, Annex H1
Essential requirements Clause(s)/subclause(s) Qualifying remarks/Notes
(ERs) of MID of EN 1434:2007
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Essential requirements Clause(s)/subclause(s) Qualifying remarks/Notes
(ERs) of MID of EN 1434:2007
PART 5
4 Uncertainty of test equipment
5 Tests to be carried out
5.1 Flow sensor AI § 1.1, MI-004 § 7.1
5.2 Temperature sensor pair AI § 1.1, MI-004 § 7.2
5.3 Calculator AI § 1.1, MI-004 § 7.3
5.4 Calculator and temp. sensor pair AI § 1.1, MI-004 § 7.2, § 7.3
5.5 Combined heat meter AI § 1.1, MI-004 § 3, § 7.1, § 7.2,§
7.3
5.6 Complete meter
AI § 1.1, MI-004 § 3
6 Documentation Annex D, Annex F, Annex H1
5 Table showing the correspondence between MID and EN 1434:2007
Essential requirements Clause(s)/subclause(s) Qualifying remarks/Notes
(ERs) of MID of EN 1434:2007
ANNEX I
1. Allowable Errors
1.1 Under rated operating conditions
and in the absence of a disturbance,
the error of measurement shall not
Part 1 § 9 MPE
exceed the maximum permissible
error (MPE) value as laid down in the
appropriate specific instrument
requirements.
Unless stated otherwise in the
instrument specific annexes,
maximum permissible error is
expressed as a bilateral value of the
deviation from the true measurement
value.
1.2 Under rated operating conditions Part 1 § 5 Test programme see Part 4
and in the presence of a disturbance, § 6.2
the performance requirement shall
be as laid down in the appropriate
specific instrument
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Essential requirements Clause(s)/subclause(s) Qualifying remarks/Notes
(ERs) of MID of EN 1434:2007
requirements. . . . .; MI 004 § 4
1.3 The manufacturer shall specify Part 1 § 10 Environmental
the climatic, mechanical and classification
electromagnetic environments in
which the instrument is intended to
be used, power supply and other
influence quantities likely to affect its
accuracy, taking account of the
requirements laid down in the
appropriate instrument specific
annexes.
Annex I § 1.3.1 of MID has
Climatic environments (Table 1)
other limits for upper and lower
ambient temperatures (table);
EN 1434-1 has
5 – 55 °C resp. - 25 – 55 °C
resp. 5 – 55 °C
Mechanical environments,
Mechanical classes M2 and
classes M1-M 3
M3 are not appropriate for heat
meters, class M1 does not
have to be tested.
1.3.3a Electromagnetic Part 1 § 10 Environmental
environments are classified as E1, classification, § 10.1 – § 10.4
Part 1 of EN 1434-1 has class
E2 or E3 ...
E1 Residential, commercial and
A or B
light industrial buildings,
E2 other industrial buildings
E 3 industrial, supplied by battery
Not appropriate for heat
of a vehicle meters
1.3.3b
Voltage interruptions Part 4 § 6.21
Short voltage reductions Part 4 § 6.10
Volt. transients supply & signal lines Part 4 § 6.11.1
Electrostatic discharges Part 4 § 6.15
RF electromagnetic fields Part 4 § 6.12 & § 6.13
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Essential requirements Clause(s)/subclause(s) Qualifying remarks/Notes
(ERs) of MID of EN 1434:2007
Cond. RF on supply & signal lines Part 4 § 6.14
Surges on supply & signal lines Part 4 § 6.11.2
1.3.4 Other influence quantities
Voltage variation Part 4 § 6.7
Mains frequency variation Part 4 § 6.7
Power frequency magnetic fields Part 4 § 6.17
1.4 When carrying out the tests
1.4.1 Basic rules for testing and the
determination of errors
Essential requirements specified in
1.1 and 1.2 shall be verified for each
relevant influence quantity. Unless
otherwise specified in an instrument
specific annex, these essential
requirements apply when each
Part 4 § 6.2 Test programme
influence quantity is applied and its
effect evaluated separately, all other
influence quantities being kept
relatively constant at their reference
value.
Metrological tests shall be carried
out during or after the application of
the influence quantity whichever
condition corresponds to the normal
Part 4 § 6.2 Table 3 Test programme
operational status of the instrument
when that influence quantity is likely
to occur.
1.4.3. 1.4.2 Ambient humidity Part 4 § 6.9 Damp heat cyclic
1) - According to the climatic
operating environment in which the
instrument is intended to be used
either the damp heat steady state
(non-condensing) or damp heat
cyclic (condensing) test may be
appropriate.
- The damp heat cyclic test is
appropriate where condensation is
important or when penetration of
vapour will be accelerated by the
effect of breathing. In conditions
where non-condensing humidity is a
factor the damp heat steady state is
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Essential requirements Clause(s)/subclause(s) Qualifying remarks/Notes
(ERs) of MID of EN 1434:2007
appropriate.
2. Reproducibility

The application of the same Part 4 § 6.22 Flow disturbances Part 4 of EN 1434-4 § 6.22,

measurand in a different location or Flow disturbance tests for flow
by a different user, all other sensors
& Part 6 (Installation, commissioning,
conditions being the same, shall operational monitoring and
result in the close agreement of
maintenance)
successive measurements. The
difference between the
measurement results shall be small
when compared with the maximum
permissible error.
3. Repeatability Part 4 § 6.1 & § 6.4.1
The application of the same
measurand under the same
conditions of measurement shall
result in the close agreement of
successive measurements. The
difference between the
measurement results shall be small
when compared with the maximum
permissible error.

4. Discrimination and Sensitivity Part 1 § 6.2 & § 6.3 Display In EN 1434-1 without overflows

of indication at continuous
operation for at least 3 000 h at
A measuring instrument shall be & § 6.3.7
sufficiently sensitive and the upper limit of thermal power,
the progress of accumulated
discrimination threshold shall be
sufficiently low for the intended energy in correspondence to at
least one digit of the lowest
measurement task.
significance of the display
5. Durability Part 4 § 6.8 Durability Test in § 6.8.2.2 is calculated
for a durability of flow sensors
A measuring instrument shall be of five years; § 6.8.2.3 has an
additional test for long-life flow
designed to maintain an adequate
stability of its metrological sensors
characteristics over a period of time
estimated by the manufacturer,
provided that it is properly installed,
maintained and used according to
the manufacturer's instruction when
in the environmental conditions for
which it is intended.
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SIST-TP CEN/TR 15760:2011
CEN/TR 15760:2010 (E)
Essential requirements Clause(s)/subclause(s) Qualifying remarks/Notes
(ERs) of MID of EN 1434:2007
6. Reliability Part 1§ 6.2 Requirement outside the
limiting values of the flow rate
A measuring instrument shall be The known effects are taking
designed to reduce as far as Part 1 § 4.22 Maximum admissible care of.
possible the effect of a defect that temperature
would lead to an inaccurate
measurement result, unless the
Part 2 § 5.6 24 hours interruption in
presence of such a defect is obvious. supply voltage
7. Suitability Part 1§ 6.4 Protection against fraud
7.1 A measuring instrument shall
have no feature likely to facilitate
fraudulent use, whereas possibilities
for unintentional misuse shall be
minimal.

7.2. A measuring instrument shall be Part 1 § 11 Heat meter specification Relevant parts of Part 1 § 11

suitable for its intended use taking and Part 2 can be used to

account of the practical working Part 2 § 3; § 4; § 5; § 6 ensure that the instrument is

conditions and bearing in mind the suitable for the intended use.
intended user shall not require
unreasonable demands of the user
in order to obtain a correct
measurement result.
7.3 The errors of a utility measuring Part 1 § 6.2 outside the limits of flow
instrument at flows or currents rate
outside the controlled range shall not
be unduly biased.
7.4 Where a measuring instrument is
designed for the measurement of
values of the measurand that are The heat transfer is normally
constant over time, the measuring
not constant over time.
instrument shall be insensitive to
small fluctuations of the value of the
measurand, or shall take appropriate
action.

7.5 A measuring instrument shall be Part 1 § 6 Technical characteristics; In EN 1434-1 § 6.1.3 including

robust and its materials of IP-class for heating
construction shall be suitable for the applications, added by IP-class
Part 1 § 6.1.3 Casing of a heat meter
conditions in which it is intended to for cooling application (acc. to
be used. EN 61010-1)
7.6. A measuring instrument shall be A heat meter shall be able to
designed so as to allow the control of work without supervision for its
the measuring tasks after the intended in-service life time.
instrument has been placed on the
market and put into use. If
necessary, special equipment or
software for this control shall be part
of the instrument. The test procedure
shall be described in the operation
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SIST-TP CEN/TR 15760:2011
CEN/TR 15760:2010 (E)
Essential requirements Clause(s)/subclause(s) Qualifying remarks/Notes
(ERs) of MID of EN 1434:2007
manual.
When a measuring instrument has
associated software which provides
other functions besides the
Ref. see in Welmec Guide 7.2
measuring function, the software that
is critical for the metrological
Part 1 § 6.10
characteristics shall be identifiable
and shall not be inadmissibly
influenced by the associated
software.
8. Protection against corruption Part 1 § 6.4 Protection against fraud
8.1 The metrological characteristics
of a measuring instrument shall not
be influenced in any inadmissible Part 1 § 6.1.3
way by the connection to it of
another device, by any feature of the
connected device itself or by any
remote device that communicates
with the measuring instrument.
8.2 A hardware component that is Part 1 § 6.4 Protection against fraud
critical for metrological
characteristics shall be designed so
that it can be secured. Security
measures foreseen shall provide for
evidence of an intervention.
8.3 Software that is critical for Part 1 § 6.10 Ref. see in WELMEC Guide
metrological characteristics shall be 7.2
identified as such and shall be
secured. Its identification shall be
easily provided by the measuring
instrument. Evidence of an
intervention shall be available for a
reasonable period of time.

8.4 Measurement data, software that Part 1 § 6.3.2 In case of failure of external

is critical for measurement power the energy indication
characteristics and metrological shall remain accessible for a
important parameters stored or minimum of one year.
transmitted shall be adequately
protected against accidental or
intentional corruption.
8.5. For utility measuring instruments Part 1 § 6.4 Protection against fraud
the display of the total quantity
supplied or the displays from which
the total quantity supplied can be
deriv
...

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