Reference conditions and procedures for testing industrial and process measurement transmitters - Part 5: Specific procedures for flow transmitters

IEC 62828-5:2020 establishes specific procedures for testing flow transmitters used in measuring and control systems for industrial process and for machinery control systems. For general test procedures, reference is to be made to IEC 62828-1:2017, applicable to all types of industrial and process measurement transmitters.
This document – together with IEC 62828-1:2017 – is the reference standard for testing every type of flow transmitter, not only for liquids but also for gases and for steam.
In this document, "industrial flow transmitters" consistently covers all types of flow transmitters used in measuring and control systems for industrial process and for machinery.

Conditions de référence et procédures pour l'essai des transmetteurs de mesure industriels et de processus - Partie 5: Procédures spécifiques pour les transmetteurs de débit

L'IEC 62828:2020 établit les procédures spécifiques d'essai des transmetteurs de débit utilisés dans les systèmes de mesure et de commande des processus industriels et des systèmes de commande des machines. Pour les procédures d'essais générales, référence doit être faite à l'IEC 62828-1:2017, applicable à tous les types de transmetteurs de mesure industriels et de processus.
Le présent document (avec l'IEC 62828-1:2017) est la norme de référence pour soumettre à essai tous les types de transmetteurs de débit, non seulement pour les liquides, mais également pour les gaz et la vapeur.
Dans le présent document, le terme "transmetteurs industriels de débit" couvre tous les types de transmetteurs de débit utilisés dans les systèmes de mesure et de commande des processus industriels et des machines.

General Information

Status
Published
Publication Date
17-Aug-2020
Current Stage
PPUB - Publication issued
Completion Date
18-Aug-2020
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IEC 62828-5
Edition 1.0 2020-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Reference conditions and procedures for testing industrial and process
measurement transmitters –
Part 5: Specific procedures for flow transmitters
Conditions de référence et procédures pour l'essai des transmetteurs
de mesure industriels et de processus –
Partie 5: Procédures spécifiques pour les transmetteurs de débit
IEC 62828-5:2020-08(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62828-5
Edition 1.0 2020-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Reference conditions and procedures for testing industrial and process
measurement transmitters –
Part 5: Specific procedures for flow transmitters
Conditions de référence et procédures pour l'essai des transmetteurs
de mesure industriels et de processus –
Partie 5: Procédures spécifiques pour les transmetteurs de débit
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.200.20; 25.040.40 ISBN 978-2-8322-8758-3

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 62828-5:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 4

INTRODUCTION ..................................................................................................................... 6

1 Scope .............................................................................................................................. 7

2 Normative references ...................................................................................................... 7

3 Terms and definitions ...................................................................................................... 7

3.1 Terms related to the flow transmitters ..................................................................... 7

3.2 Terms related to the flow velocity ............................................................................ 9

3.3 Reference to the IEC common data dictionary (CDD) ............................................ 10

4 General description of the device .................................................................................. 10

4.1 General ................................................................................................................. 10

4.2 Differential pressure flowmeters ............................................................................ 10

4.3 Velocity flowmeters ............................................................................................... 10

4.4 Volumetric flowmeters ........................................................................................... 10

4.5 Mass flowmeters ................................................................................................... 11

5 Reference test conditions and service conditions ........................................................... 11

6 Test procedures ............................................................................................................ 11

6.1 General ................................................................................................................. 11

6.2 Tests at standard and operating reference test conditions..................................... 11

6.2.1 General requirements .................................................................................... 11

6.2.2 Requirements with different test fluids ........................................................... 12

6.2.3 Accuracy and related factors ......................................................................... 14

6.2.4 Dynamic behaviour ........................................................................................ 20

6.2.5 Static behaviour ............................................................................................. 20

6.3 Type tests at operating test conditions .................................................................. 22

6.4 Routine test .......................................................................................................... 22

6.5 Acceptance, integration and maintenance tests for flow transmitters ..................... 22

7 Documentation .............................................................................................................. 22

7.1 Documentation of the test results .......................................................................... 22

7.2 Determination of the total probable error (TPE) ..................................................... 22

7.3 Examples for the estimation of the TPE of flow transmitters .................................. 23

Annex A (normative) Summary of the tests .......................................................................... 24

Annex B (normative) Calibration of flow transmitters and calibration report .......................... 25

Annex C (informative) Information on calibration of flow transmitters and calibration

report .................................................................................................................................... 26

C.1 General ................................................................................................................. 26

C.2 Calibration methods .............................................................................................. 26

C.2.1 Gravimetric .................................................................................................... 26

C.2.2 Volumetric ..................................................................................................... 26

C.2.3 Master meter ................................................................................................. 26

C.3 Calibration procedure ............................................................................................ 27

C.3.1 Setup before calibration run ........................................................................... 27

C.3.2 Calibration run ............................................................................................... 28

C.3.3 After calibration run ....................................................................................... 28

C.4 Guideline for choosing appropriate rates ............................................................... 28

Annex D (informative) Relationship between typical flow transmitter and normative

references ............................................................................................................................ 30

---------------------- Page: 4 ----------------------
IEC 62828-5:2020 © IEC 2020 – 3 –

Annex E (informative) Cautions and notes for the acceptance tests on the site or at

the factory ............................................................................................................................ 31

E.1 General ................................................................................................................. 31

E.2 Cautions and notes ............................................................................................... 31

E.2.1 Power supply for flow transmitters, pump and the flow generating unit ........... 31

E.2.2 Flow condition ............................................................................................... 31

E.2.3 Temperature of the measurand ...................................................................... 31

E.2.4 Material selection .......................................................................................... 31

E.2.5 Accuracy comparing with the other value ....................................................... 32

Bibliography .......................................................................................................................... 33

Figure C.1 – Example of calibration methods ........................................................................ 27

Figure C.2 – Example of the calibration/test flow .................................................................. 29

Table 1 – Stability requirements during the measurement ..................................................... 12

Table 2 – Reference conditions for TPE determination .......................................................... 22

Table A.1 – Overview of the required tests for different measurement principles ................... 24

Table D.1 – Relationship between typical flow transmitter and normative references ............ 30

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– 4 – IEC 62828-5:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
REFERENCE CONDITIONS AND PROCEDURES FOR TESTING
INDUSTRIAL AND PROCESS MEASUREMENT TRANSMITTERS –
Part 5: Specific procedures for flow transmitters
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

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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

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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

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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 62828-5 has been prepared by subcommittee 65B: Measurement

and control devices, of IEC technical committee 65: Industrial-process measurement, control

and automation.

The IEC 62828 series cancels and replaces the IEC 60770 series and proposes revisions for

the IEC 61298 series.
The text of this International Standard is based on the following documents:
FDIS Report on voting
65B/1179/FDIS 65B/1181/RVD

Full information on the voting for the approval of this International Standard can be found in the

report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

---------------------- Page: 6 ----------------------
IEC 62828-5:2020 © IEC 2020 – 5 –
This International Standard is to be used in conjunction with IEC 62828-1:2017.

A list of all parts in the IEC 62828 series, published under the general title Reference conditions

and procedures for testing industrial and process measurement transmitters, can be found on

the IEC website.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 7 ----------------------
– 6 – IEC 62828-5:2020 © IEC 2020
INTRODUCTION

Most of the current IEC standards on industrial measurement transmitters are rather old and

were developed having in mind devices based on analogue technologies. Today's digital

industrial and process measurement transmitters are quite different from those analogue

transmitters: they include more functions and newer interfaces, both towards the computing

section (mostly digital) and towards the measuring section (mostly mechanical). Even if some

standards dealing with digital transmitters already exist, they are not sufficient, since some

aspects of the performance are not covered by appropriate test methods.

In addition, the existing IEC test standards for industrial and process measurement transmitters

are spread over many documents, so that for manufacturers and users it was difficult,

impractical and time-consuming to identify and select all the standards to be applied to a device

measuring a specific process quantity (pressure, temperature, level, flow, etc.).

To help the manufacturers and users, it was decided to review, complete and reorganize the

existing IEC standards on the industrial and process measurement transmitters and to create a

more suitable, effective and comprehensive standard series that provides, in a systematic way,

all the needed specifications and tests for the different industrial and process measurement

transmitters.

To solve the issues mentioned above and to provide an added value for the stakeholders, the

new standard series on industrial and process measurement transmitters covers the following

main aspects:
• applicable normative references;
• specific terms and definitions;

• typical configurations and architectures for the various types of industrial and measurement

transmitters;
• hardware and software aspects;

• interfaces (to the process, to the operator, to the other measurement and control devices);

• physical, mechanical and electrical requirements and relevant tests; clear definition of the

test categories: type tests, acceptance tests and routine tests;
• performances (their specification, tests and verification);

• environmental protection, hazardous areas application, functional safety, etc.;

• structure of the technical documentation.

To cover in a systematic way all the topics to be addressed, the standard series is organized in

several parts. At the time of publication of this document, IEC 62828 consists of the following

parts:
• IEC 62828-1: General procedures for all types of transmitters
• IEC 62828-2: Specific procedures for pressure transmitters
• IEC 62828-3: Specific procedures for temperature transmitters
• IEC 62828-4: Specific procedures for level transmitters
• IEC 62828-5: Specific procedures for flow transmitters

In preparing the IEC 62828 series (all parts), many test procedures were taken, with the

necessary improvements, from the IEC 61298 series. Because the IEC 61298 series is currently

applicable to all process measurement and control devices, when the IEC 62828 series is

completed, the IEC 61298 series will be revised to harmonize it with the IEC 62828 series,

taking out from its scope the industrial and process measurement transmitters. During the time

when the scope of the IEC 61298 series is being updated, the new IEC 62828 series takes

precedence for industrial and process measurement transmitters.
When the IEC 62828 series is published, the IEC 60770 series will be withdrawn.
---------------------- Page: 8 ----------------------
IEC 62828-5:2020 © IEC 2020 – 7 –
REFERENCE CONDITIONS AND PROCEDURES FOR TESTING
INDUSTRIAL AND PROCESS MEASUREMENT TRANSMITTERS –
Part 5: Specific procedures for flow transmitters
1 Scope

This part of IEC 62828 establishes specific procedures for testing flow transmitters used in

measuring and control systems for industrial process and for machinery control systems. For

general test procedures, reference is to be made to IEC 62828-1:2017, applicable to all types

of industrial and process measurement transmitters.

This document – together with IEC 62828-1:2017 – is the reference standard for testing every

type of flow transmitter, not only for liquids but also for gases and for steam.

In this document, "industrial flow transmitters" consistently covers all types of flow transmitters

used in measuring and control systems for industrial process and for machinery.
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.

IEC 62828-1:2017, Reference conditions and procedures for testing industrial and process

measurement transmitters – Part 1: General procedures for all types of transmitters

IEC 61987-12, Industrial-process measurement and control – Data structures and elements in

process equipment catalogues – Part 12: Lists of properties (LOPs) for flow measuring

equipment for electronic data exchange
ISO 4185, Measurement of liquid flow in closed conduits – Weighing method

ISO 17025, General requirements for the competence of testing and calibration laboratories

3 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 62828-1 and the

following 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 Terms related to the flow transmitters
3.1.1
adjustment
properties characterizing the means provided for the adjustment of a device
[SOURCE: Identifier ABC081 in the IEC common data dictionary]
---------------------- Page: 9 ----------------------
– 8 – IEC 62828-5:2020 © IEC 2020
3.1.2
calibration

operation that, under specified conditions, in a first step, establishes a relation between the

quantity values with measurement uncertainties provided by measurement standards and

corresponding indications with associated measurement uncertainties and, in a second step,

uses this information to establish a relation for obtaining a measurement result from an

indication

Note 1 to entry: 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 2 to entry: Calibration should not be confused with adjustment of a measuring system, often mistakenly called

"self-calibration", nor with verification of calibration.

Note 3 to entry: Often, the first step alone in the above definition is perceived as being calibration.

[SOURCE: ISO/IEC Guide 99:2007, 2.39]
3.1.3
fluid

general category for gases, steams and liquids, which are substances that continuously deform

under the action of shear stress and at rest cannot withstand shear stress
3.1.4
maximum flow rate

corresponds to maximum measurand regarding flow rate Q , and this Q can be also the

max max
maximum working flow
3.1.5
minimum flow rate

corresponds to minimum measurand regarding flow rate Q , and this Q can be the minimum

min min
working flow
3.1.6
nominal range

range of indications obtainable with a particular setting of the controls of a measuring instrument

Note 1 to entry: The nominal range is normally stated in terms of its lower and upper limits. Where the lower limit

is zero, the nominal range is commonly stated solely in terms of its upper limit.

[SOURCE: IEC 60050-311:2001, 311-03-14]
3.1.7
pressure loss

static pressure difference between the inlet and the outlet of a flow meter or flow meter package

(consisting of flow meter, inlet/outlet pipe sections and flow straightener or any other flow

conditioning device), to be given as function of flow rate and viscosity
3.1.8
Reynolds number

dimensionless quantity characterizing the flow of a fluid in a given configuration characterized

by a specified length l, defined by Re = ρvl / η = vl / γ, where the fluid is described by its mass

density ρ, velocity v, dynamic viscosity η, and kinematic viscosity γ

[SOURCE: IEC 60050-113:2011, 113-03-36, modified – In the definition, "quantity of

dimension 1" replaced by "dimensionless".]
---------------------- Page: 10 ----------------------
IEC 62828-5:2020 © IEC 2020 – 9 –
3.1.9
zero and span adjustment
means provided for adjusting the zero and span
[SOURCE: IEC 61987, ABA896 modified]
3.1.10
viscosity

for a fluid with laminar flow in x-direction, thus for which v = v = 0 and v = v (z) ≥ 0, where x,

y z x x
y, z are Cartesian coordinates, scalar quantity characterizing internal friction

Note 1 to entry: The coherent SI unit of dynamic viscosity is pascal second, Pa·s.

[SOURCE: IEC 60050-113:2011, 113-03-34, modified – The end of the definition has been

omitted.]
3.1.11
voltage fluctuation

series of voltage changes or a continuous variation of the RMS or peak value of the voltage

[SOURCE: IEC 60050-161:1990, 161-08-05, modified – The note has been omitted.]
3.2 Terms related to the flow velocity
3.2.1
assigned flow velocity range
properties characterizing a range configured at the factory for flow velocity
[SOURCE: IEC 61987, ABD493]
3.2.2
maximum flow velocity

highest flow velocity for which a device is or must be designed to operate within its specified

limits
[SOURCE: IEC 61987, ABF560]
3.2.3
span for flow velocity

difference between the upper and lower range of flow velocity to which a flow velocity

measurement instrument is adjusted.
[SOURCE: IEC 61987, ABD435]
3.2.4
line-pack effect

uncertainty contribution due to the compressibility and the time delay at flowing pressure and

temperature in pipelines

Note 1 to entry: A pipeline, particularly in the oil and gas industry is used to transport natural gas over long distances

and can also be used to store that gas before and during transportation. Noteworthy, the compressibility of the gas

allows the storing of gas in pipelines to be performed temporarily. This technique is called "line packing", i.e. a

method used for providing short-term gas storage in which natural gas is compressed in transmission lines, providing

additional amounts of gas to meet limited peak demand.
---------------------- Page: 11 ----------------------
– 10 – IEC 62828-5:2020 © IEC 2020
3.3 Reference to the IEC common data dictionary (CDD)

The IEC common data dictionary (CDD) contains a classification of measuring devices with lists

of properties for the device types most often met in practice. These properties can be used to

describe the performance of a device, the effect of any quantities influencing its performance

as well as the reference standards against which it was tested with test resu
...

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