CEN/TR 15654-3:2019

SLOVENSKI STANDARD
01-julij-2019
Železniške naprave - Meritve vertikalnih kolesnih in osnih obremenitev - 3. del:
Odobritev in preverjanje meritev na železniških vozilih med vožnjo
Railway applications - Measurement of vertical forces on wheels and wheelsets - Part 3:
Approval and verification of on track measurement sites for vehicles in service
Bahnanwendungen - Messung von vertikalen Rad- und Radsazkräften - Teil 3:
Zulassung und Prüfung von gleisseitigen Messeinrichtungen für Fahrzeuge im
betrieblichen Einsatz
Applications ferroviaires - Mesurage des forces verticales à la roue et à l'essieu - Partie 3
: Approbation et vérification des sites de mesure en voie des véhicules en service
Ta slovenski standard je istoveten z: CEN/TR 15654-3:2019
ICS:
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TR 15654-3
TECHNICAL REPORT
RAPPORT TECHNIQUE
May 2019
TECHNISCHER BERICHT
ICS 45.060.01
English Version
Railway applications - Measurement of vertical forces on
wheels and wheelsets - Part 3: Approval and verification of
on track measurement sites for vehicles in service
Applications ferroviaires - Mesurage des forces Bahnanwendungen - Messung von vertikalen Rad- und
verticales à la roue et à l'essieu - Partie 3 : Approbation Radsatzkräften - Teil 3: Zulassung und Prüfung von
et vérification des sites de mesure en voie des gleisseitigen Messeinrichtungen für Fahrzeuge im
véhicules en service betrieblichen Einsatz

This Technical Report was approved by CEN on 15 April 2019. It has been drawn up by the Technical Committee CEN/TC 256.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 15654-3:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Overview . 6
5 Type approval . 8
5.1 General . 8
5.2 Tested metrological characteristics and technical requirements . 8
5.3 Laboratory and site tests . 8
5.4 Type approval test train . 10
5.5 Type approval test runs . 10
5.6 Changes to the metrological characteristics and technical requirements . 11
6 Initial verification . 12
6.1 General . 12
6.2 Verification procedure for metrological characteristics . 12
7 In-service verification . 14
7.1 General . 14
7.2 Static reference test method . 17

7.3 Dynamic reference test method . 17
7.4 Dynamic comparison test method . 18
7.5 Statistical comparison test method . 18
Annex A (informative) Calibration and Adjustment . 20
A.1 General . 20
A.2 Calibration . 20
A.3 Adjustment . 20
Annex B (informative) Reference values and proof of accuracy classes . 21
B.1 General . 21
B.2 Recommendations to determine reference values . 21
B.3 Calculation of maximum error from test data . 22
B.4 Proof of accuracy class . 22
B.5 Example for proof of an accuracy class 10 device . 22
Annex C (informative) Examples for statistical test methods . 24
C.1 General . 24
C.2 Dynamic comparison test method . 24
C.3 Statistical comparison test method . 26
C.3.1 General . 26
C.3.2 Example for 7.5 a) . 26
C.3.3 Example for 7.5 c) Compare one station to all other stations . 27
C.3.4 Example for 7.5 c) . 29
C.3.5 Example for 7.5 c) . 31
Bibliography . 33

European foreword
This document (CEN/TR 15654-3:2019) has been prepared by Technical Committee CEN/TC 256
“Railway applications”, the secretariat of which is held by DIN.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document is the third part of the EN 15654 series, Railway applications — Measurement of vertical
forces on wheels and wheelsets, which consists of the following parts:
— Part 1: On-track measurement sites for vehicles in service;
— Part 2: Test in workshop for new, modified and maintained vehicles;
— Part 3: Approval and verification of on track measurement sites for vehicles in service [this CEN/TR].
This document describes the acceptance and verification of devices defined in Part 1.
Introduction
This document has been developed to provide approval and verification procedures to ensure that
measurement systems according to EN 15654-1 meet the functional and metrological characteristics.
The goal is to achieve metrologically traceable and reproducible measurement results.
1 Scope
This document is related to EN 15654-1, Railway applications — Measurement of vertical forces on
wheels and wheelsets — Part 1: On-track measurement sites for vehicles in service, which lays down
minimum technical requirements and the metrological characteristics of a system for measuring and
evaluating a range of vehicle loading parameters during operation in service.
The aim of this document is to describe approval and verification procedures to validate the functional
and metrological characteristics of measurement systems and confirm them over time.
The goal is to obtain the comparability and reproducibility of measurement results under different
boundary conditions. To minimize the number of tests, the approval and verification procedures are
divided into:
— type approval,
— initial verification,
— in-service verification.
The accuracy class of a measurement system depends on the measurement device, vehicle and track
characteristics. Test procedures covering these influences are described to ensure reproducibility in all
networks.
The procedures described in this document do not impose any restrictions on the design of
measurement sites, on the types of vehicles that can be monitored, or on which networks or lines the
measuring system can be installed.
The annexes include examples for test procedures, calculation of maximum permissible errors and
statistical test methods.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 15654-1:2018, Railway applications — Measurement of vertical forces on wheels and wheelsets —
Part 1: On-track measurement sites for vehicles in service
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
calibration
operation that establishes a relationship between the reference value and the indicated measurement
result from the device under test
Note 1 to entry: The reference value is a quantity value with known uncertainties provided by measurement
standards.
Note 2 to entry: The indicated measurement result is the quantity with associated measurement uncertainties.
Note 3 to entry: A calibration may be expressed by a statement, calibration function, calibration diagram,
calibration curve, or calibration table. In some cases, it may consist of an additive or multiplicative correction of
the indication with associated measurement uncertainty.
Note 4 to entry: Calibration should not be confused with adjustment of a measuring system, often mistakenly
called “self-calibration”, nor with verification of calibration (see [2]).
Note 5 to entry: Often, the first step alone in the above definition is perceived as being calibration.
Note 6 to entry: Calibration in general involves comparison against a known standard to determine how closely
measurement system output matches the reference over the expected range of operation [based on GUIDE TO
METEOROLOGICAL INSTRUMENTS AND METHODS OF OBSERVATION (WMO-No. 8), Part III, Chapter 4].
[SOURCE: OIML V 2-200:2012, 2.39]
3.2
adjustment
process carried out on a measuring instrument in order to provide indications corresponding to given
values of the quantity
3.3
verification
conformation through provision of objective evidence that specified requirements have been fulfilled
3.4
approval
formal conformation of compliancy with the requirements of the present standard
3.5
reference value
reading from a measurement
...