Industrial-process control systems - Instruments with analogue inputs and two- or multi-state outputs -- Part 1: Methods of evaluating performance

is applicable to pneumatic and electric industrial-process instruments using measured values that are continuous signals in accordance with EN 60382, or EN 60381-1. The other input value (i.e. the set point value) may be either a mechanical (position, force, etc.) or a standard signal.

Systeme der industriellen Prozessleittechnik - Geräte mit analogen Eingängen und Zwei- oder Mehrpunktverhalten -- Teil 1: Verfahren zur Bewertung des Betriebsverhaltens

Processus industriels - Instruments avec entrées analogiques et sorties à deux ou plusieurs états -- Partie 1: Méthodes d'évaluation des performances

is applicable to pneumatic and electric industrial-process instruments using measured values that are continuous signals in accordance with EN 60382, or EN 60381-1. The other input value (i.e. the set point value) may be either a mechanical (position, force, etc.) or a standard signal.

Industrial-process control systems - Instruments with analogue inputs and two- or multi-state outputs - Part 1: Methods of evaluating performance

General Information

Status
Published
Publication Date
31-May-2004
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Jun-2004
Due Date
01-Jun-2004
Completion Date
01-Jun-2004

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SLOVENSKI SIST EN 61003-1:2004

STANDARD
junij 2004
Industrial-process control systems - Instruments with analogue inputs and two- or
multi-state outputs - Part 1: Methods of evaluating performance
ICS 25.040.40 Referenčna številka
SIST EN 61003-1:2004(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

---------------------- Page: 1 ----------------------

EUROPEAN STANDARD EN 61003-1
NORME EUROPÉENNE
EUROPÄISCHE NORM April 2004

ICS 32.240.50; 25.040.40 Supersedes EN 61003-1:1993


English version


Industrial-process control systems -
Instruments with analogue inputs
and two- or multi-state outputs
Part 1: Methods of evaluating performance
(IEC 61003-1:2004)


Processus industriels -  Systeme der industriellen
Instruments avec entrées analogiques Prozessleittechnik -
et sorties à deux ou plusieurs états Geräte mit analogen Eingängen
Partie 1: Méthodes d'évaluation und Zwei- oder Mehrpunktverhalten
des performances Teil 1: Verfahren zur Bewertung
(CEI 61003-1:2004) des Betriebsverhaltens
(IEC 61003-1:2004)





This European Standard was approved by CENELEC on 2004-03-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61003-1:2004 E

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EN 61003-1:2004 - 2 -
Foreword

The text of document 65B/516/FDIS, future edition 2 of IEC 61003-1, prepared by SC 65B, Devices, of
IEC TC 65, Industrial-process measurement and control, was submitted to the IEC-CENELEC parallel
vote and was approved by CENELEC as EN 61003-1 on 2004-03-01.

This European Standard supersedes EN 61003-1:1993.

It takes into account the common standardized basis specified in the EN 61298 series. Any test method
or procedure specified and described herein is referred to the corresponding Clause of the EN 61298
series. Any particular method or procedure not covered by the EN 61298 series is developed and
specified in this standard in accordance with the criteria stated in the EN 61298 series, as far as they are
applicable.

The following dates were fixed:

– latest date by which the EN has to be implemented
 at national level by publication of an identical
 national standard or by endorsement (dop) 2004-12-01

– latest date by which the national standards conflicting
 with the EN have to be withdrawn (dow) 2007-03-01

Annex ZA has been added by CENELEC.
__________

Endorsement notice

The text of the International Standard IEC 61003-1:2004 was approved by CENELEC as a European
Standard without any modification.
__________

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- 3 - EN 61003-1:2004
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application 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.
NOTE Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60050-351 1998 International Electrotechnical Vocabulary- -
Part 351: Automatic control

IEC 60381-1 1982 Analogue signals for process control HD 452.1 S1 1984
systems
Part 1: Direct current signals

IEC 60382 1991 Analogue pneumatic signal for process EN 60382 1993
control systems

IEC 61010-1 2001 Safety requirements for electrical EN 61010-1 2001
equipment for measurement, control, and + corr. June 2002
laboratory use
Part 1: General requirements

IEC 61298-1 1995 Process measurement and control EN 61298-1 1995
devices - General methods and
procedures for evaluating performance
Part 1: General considerations

IEC 61298-2 1995 Part 2: Tests under reference conditions EN 61298-2 1995

IEC 61298-3 1998 Part 3: Tests for the effects of influence EN 61298-3 1998
quantities

IEC 61298-4 1995 Part 4: Evaluation report content EN 61298-4 1995

IEC 61326 2002 Electrical equipment for measurement, - -
control and laboratory use - EMC
requirements

---------------------- Page: 4 ----------------------

INTERNATIONAL IEC
STANDARD 61003-1
Second edition
2004-01
Industrial-process control systems –
Instruments with analogue inputs and
two- or multi-state outputs –
Part 1:
Methods of evaluating performance
© IEC 2004 ⎯ Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale U
International Electrotechnical Commission
ɆɟɠɞɭɧɚɪɨɞɧɚɹɗɥɟɤɬɪɨɬɟɯɧɢɱɟɫɤɚɹɄɨɦɢɫɫɢɹ
For price, see current catalogue

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– 2 – 61003-1 © IEC:2004(E)
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Normative references.6
3 Terms and definitions .7
4 General conditions for tests .8
4.1 Documentary information.8
4.2 Safety.8
4.3 Installation.8
4.4 Supply conditions.9
5 General testing procedures and precautions.9
5.1 Checking of calibration made prior to delivery .9
5.2 Set point.9
5.3 Switching differential.9
6 Test methods and procedures.9
6.1 Tests under reference conditions .9
6.2 Tests for the effects of influence quantities .12
6.3 Other tests.19
7 Multi-state instrument.21
7.1 Action.21
7.2 Tests.21
7.2.1 Characteristics of the multi-state instrument.21
7.2.2 Mutual influence of pairs of switching points.21
7.2.3 Determination of switching range .21
8 General observations.21
8.1 Protective finishes.21
8.2 Design features.22
8.3 Tools and equipment .22
9 Test report and summary of tests.23
10 Other considerations.27
10.1 Routine maintenance and adjustment .27
10.2 Repair.27
10.3 Partial evaluation.27

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61003-1 © IEC:2004(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
INDUSTRIAL-PROCESS CONTROL SYSTEMS –
INSTRUMENTS WITH ANALOGUE INPUTS AND
TWO- OR MULTI-STATE OUTPUTS –
Part 1: Methods of evaluating performance
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61003-1 has been prepared by subcommittee 65B: Devices, of IEC
technical committee 65: Industrial-process measurement and control.
This second edition cancels and replaces the first edition issued in 1991 and constitutes a
technical revision. It takes into account the common standardized basis specified in the IEC
61298 series. Any test method or procedure specified and described herein is referred to the
corresponding Clause of the IEC 61298 series. Any particular method or procedure not covered
by the IEC 61298 series is developed and specified in this standard in accordance with the
criteria stated in the IEC 61298 series, as far as they are applicable.

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– 4 – 61003-1 © IEC:2004(E)
The text of this standard is based on the following documents:
FDIS Report on voting
65B/516/FDIS 65B/524/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
2012. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

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61003-1 © IEC:2004(E) – 5 –
INTRODUCTION
The methods of evaluation specified in this part of IEC 61003 are intended for use by
manufacturers to determine the performance of their products and by users, or independent
testing establishments, to verify the manufacturer's performance specifications.
The test conditions in this standard, for example the range of ambient temperatures and power
supply, represent those, which commonly arise in use. Consequently, the values specified
herein shall be used where the manufacturer specifies no other values.
The tests specified in this standard are not necessarily sufficient for instruments specifically
designed for unusually arduous duties. Conversely, a restricted series of tests may be suitable
for instruments designed to perform within a more limited range of conditions.
It will be appreciated that the closest communication should be maintained between the
evaluating body and the manufacturer. Note shall be taken of the manufacturer's specifications
for the instrument, when the test programme is being decided, and the manufacturer should be
invited to comment on both the test programme and the results. His comments on the results
should be included in any report produced by the testing organisation.

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– 6 – 61003-1 © IEC:2004(E)
INDUSTRIAL-PROCESS CONTROL SYSTEMS –
INSTRUMENTS WITH ANALOGUE INPUTS AND
TWO- OR MULTI-STATE OUTPUTS –
Part 1: Methods of evaluating performance
1 Scope
This part of IEC 61003 is applicable to pneumatic and electric industrial-process instruments
using measured values that are continuous signals in accordance with IEC 60382, or IEC
60381-1. The other input value (i.e. the set point value) may be either a mechanical (position,
force, etc.) or a standard signal.
It should be noted that tests specified herein may be applied to instruments which have other
continuous measured values, provided that due allowance is made for such differences.
These instruments may be used as controllers or as switches for alarm and other similar
purposes.
Instruments with feedback are not covered by this standard.
Electronic security issues may impact only a few products covered by this document.
Consequently this document does not address such security issues.
This standard is intended to specify uniform testing methods for performance evaluation of
industrial-process instruments with analogue measured values and two- or multi-state outputs.
Considerations other than the performances are listed in Clause 10.
2 Normative references
The following referenced documents are indispensable for the application 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.
IEC 60050-351:1998, International Electrotechnical Vocabulary (IEV) – Part 351 Automatic
control
IEC 60381-1:1982, Analogue signals for process control systems – Part 1: Direct current
signals
IEC 60382:1991, Analogue pneumatic signals for process control systems
IEC 61010-1:2001, Safety requirements for electrical equipment for measurement, control and
laboratory use – Part 1: General requirements
IEC 61298-1:1995, Process measurement and control devices – General methods and
procedures for evaluating performance – Part 1: General considerations
IEC 61298-2:1995, Process measurement and control devices – General methods and
procedures for evaluating performance – Part 2: Tests under reference conditions

---------------------- Page: 10 ----------------------

61003-1 © IEC:2004(E) – 7 –
IEC 61298-3:1998, Process measurement and control devices – General methods and
procedures for evaluating performance – Part 3: Tests for the effects of influence quantities
IEC 61298-4:1995, Process measurement and control devices – General methods and
procedures for evaluating performance – Part 4: Evaluation report content
IEC 61326:2002, Electrical equipment for measurement, control and laboratory use – EMC
requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-351 and in
IEC 61298-1, IEC 61298-2, IEC 61298-3, IEC 61298-4, together with the following definitions
apply.
3.1
switching point x ,x
1 2
measured value (with the input moving either upscale or downscale), at which the output (y)
changes from one state to another
3.2
two-state instrument
action illustrated in Figure 1, where x is the value of the input variable and y is the value of the
output signal.
The two-state instrument, having one pair of switching points x and x (x greater than x ) has
1 2 2 1
the relationships:
y = y for x < x
1 1
y = y for x > x
2 2
For x < x < x y may be either y or y .
1 2, 1 2
It is y if the last switching point crossed by x was x .
1 1
It is y if the last switching point crossed by x was x .
2 2
3.3
multi-state instrument
a multi-state instrument (see Clause 7 and Figure 4) has n possible output values and n-1 pairs
of switching points. Each pair of switching points may be investigated by the procedure given
for the two-state instrument.
3.4
switching differential X
sd
difference between the switching point x with the measured value moving upscale and the
2
switching point x with the measured value moving downscale
1
3.5
instrument with no switching differential
this is considered to be a special case where the switching differential approaches zero
3.6
mean switching point x
m
the mean of the values of upscale and downscale switching points

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– 8 – 61003-1 © IEC:2004(E)
3.7
switching range X
sr
in a multi-state instrument the range of measured values corresponding to the extreme
switching points
3.8
set point w (reference input variable)
the point (value) at which it is desired that switching (at x or x as specified) should occur
2 1
4 General conditions for tests
For the purpose of this standard the general test conditions (e.g. environmental test conditions,
supply conditions, load conditions, mounting position, externally induced vibrations, external
mechanical constraints, delivery of the instrument) specified in IEC 61298-1, Clause 6 apply,
together with the additional information below.
4.1 Documentary information
The manufacturer shall supply to the evaluating body information for installation,
commissioning, operation, routine maintenance and repair of the instrument. A spare parts list,
together with a recommendation of the spare parts to be held in stock, shall be supplied. The
language of written information for installation should be the language of the local user.
All the relevant publications supplied by the manufacturer, automatically and on request, should
be listed.
If they do not contain a clear description, with adequate diagrams, of the operation of the
instrument, or if they do not contain an adequate spare parts and specifications list, the nature
of the inadequacy should be noted.
Additionally, any certificates indicating the degree of intrinsic safety and flameproofing, etc. of
electrically powered instruments should be listed. This information should give details of the
certificate numbers and the degree of protection provided.
Procedures for installation, routine maintenance and adjustment, repairs and overhaul should
be examined by the actual performance of the required operation. This should be performed in
accordance with the manufacturer's instructions, so that an evaluation of the instructions can
be carried out concurrently.
4.2 Safety
Electrically powered instruments should be examined to determine the degree to which their
design protects them against accidental electric shock.
4.3 Installation
The instrument should be installed and set to work according to the manufacturer's
instructions, taking account of the various applications which may be met in practice and which
require different procedures.
The method of mounting specified by the manufacturer should be reported. Any restrictions on
the use of the instrument caused by this method of mounting shall be noted with explanations.
Any other aspects that may seem relevant to the ease or difficulty of installation should be
noted with explanations.

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61003-1 © IEC:2004(E) – 9 –
4.4 Supply conditions
Tolerances on supply conditions for mains supplied equipment are given in 6.2.2 of IEC 61298-1.
For instruments with self-contained power supplies (e.g. battery-powered) the tolerances are
different and shall be agreed.
NOTE For pneumatic instrument care should be taken to ensure that pneumatic connections are leak tight.
5 General testing procedures and precautions
For the purpose of this standard, the general testing procedures and precautions, specified in
Clause 7 of IEC 61298-1, shall be applied, together with the additional information below.
5.1 Checking of calibration made prior to delivery
The input-output characteristic that shall be checked (see 7.6 of IEC 61298-1) is the values of
the switching points x and x found during the calibration (if any) made prior to delivery.
1 2
5.2 Set point
Except where otherwise specified, the set point shall be set to the midscale value or, where no
scale is provided, to the middle of the effective range of adjustment.
5.3 Switching differential
Except where otherwise specified, if the switching differential X is adjustable, it shall be set
sd
to the midscale value or, where no scale is provided, to the middle of the effective range of
adjustment.
6 Test methods and procedures
For the purpose of this standard, the tests general methods and procedures – if any – specified
in IEC 61298-2 and IEC 61298-3 apply, together with the additional information stated below.
6.1 Tests under reference conditions
Methods and procedures for each test are described in the last column of the following table.
In the others column are indicated:
– Clause N° and designation of test;
– Clause number of the reference where the general procedures are specified.

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– 10 – 61003-1 © IEC:2004(E)
Clause and Designation Reference Test methods and procedures description
6.1.1 Switching accuracy IEC 61298-2 The input measured value x shall be varied
related factors slowly at least five times in each direction
4.1.7
through its entire range. By observation of the
output, the values of points x and x and their
1 2
average shall be determined.
For each cycle, the switching differential (x –
1
x ) shall be noted.
2
6.1.1.1 Inaccuracy of IEC 61298-2 Switching point inaccuracy is determined by
selecting the greatest positive and negative
switching points
4.1.7.1
deviations of any measured value of x and x ,
1 2
of any cycle, from the set point w for increasing
and decreasing inputs and reporting this in
percent of nominal span of measured value.
6.1.1.2 Non-repeatability of IEC 61298-2 Non-repeatability shall be computed observing
the maximum difference, in percent of nominal
switching points
4.1.7.6
span of measured value, among all x values
1
and among all x values.
2
The maximum value, from either the x
1
maximum difference or the x maximum
2
difference, is reported as non-repeatability.
6.1.1.3 Inaccuracy of IEC 61298-2 The switching differential X is calculated by
sd
subtracting the average value of x from the
switching
1
4.1.7.1
average value of x (see 6.1.1).
differential
2
Switching differential inaccuracy is determined
by selecting the greatest positive and negative
deviations of any measured value of the
switching differentials – calculated in each of
the five cycles – from the X value and
sd
reporting this in percent of the nominal span of
measured value.
6.1.1.4 Non-repeatability of IEC 61298-2 Non-repeatability shall be computed calculating
the differences, in percent of the nominal span
switching
4.1.7.6
of measured value, among all switching
differential
differential values noted in 6.1.1.
The maximum of those values is reported as
non-repeatability of switching differential.
6.1.2 Mean switching Mean switching point x is calculated as the
m
mean of the average values of x and x (see
point
1 2
6.1.1).
For the adjustment of set point value w, four
6.1.3 Set point
cases shall be considered:
1. a) w is an adjustable and directly
measurable value;
b) w is adjustable at the instrument and an
adjusting scale for w is provided;
2. w is adjustable at the instrument, but there
is no adjusting scale;
3. w is a pre-selected fixed value.

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61003-1 © IEC:2004(E) – 11 –
Clause and Designation Reference Test methods and procedures description
6.1.3.1 Set point adjustable IEC 61298-2 Determine values of x x and X , and their
1, 2 sd
and measurable or accuracy-related factors, in accordance with
4.1.7.1 and
the test procedures in subclause 6.1.1, at least
indicated
4.1.7.6
for values of w of 10 %, 50 % and 90 %, the
50 % value being taken last.
Determine values of x , in accordance with the
m
test procedures in 6.1.2.
The inaccuracy of set point setting is
determined by selecting the greatest positive
and negative deviations of any measured value
of x from the ideal set-point value for each
m
cycle and for each set-point and reporting this
in percent of the nominal span of measured
value.
6.1.3.2 Set point adjustable IEC 61298-2 Determine values of x x and X , and their
1, 2 sd
accuracy-related factors, in accordance with
but not indicated
4.1.7.1 and
the test procedures in 6.1.1 and 6.1.2, and
4.1.7.6
values of x , in accordance with the test
m
procedures in 6.1.2.
Make this test, for at least three values of w,
approximately evenly spaced over the effective
range of adjustment, the approximately mid
value being taken last.
No determination of x -w is possible in this
m
case.
6.1.3.3 Set point not IEC 61298-2 Determine values of x x and X , and their
1, 2 sd
accuracy-related factors, in accordance with
adjustable
4.1.7.1 and
the test procedures in 6.1.1 and 6.1.2, and
4.1.7.6
values of x , in accordance with the test
m
procedures in 6.1.2.
The inaccuracy of set point setting is
determined by selecting the greatest positive
...

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