SIST EN IEC 62828-1:2026

• Abstract:

  This Part of IEC 62828 establishes a general framework for defining reference conditions and test procedures applicable for assessing the measurement performances of all types of industrial and process measurement transmitters (PMTs) used in measuring and control systems for industrial process and machinery.; For the purpose of this document, an analogue PMT is a process measurement transmitter with only analogue current and/or voltage output(s), irrespective the technology adopted and the complexity of the circuitry. All the other process measurement transmitters, with digital output(s) only or with hybrid analogue and digital output(s), are considered to be digital PMTs.; This document constitutes a common reference for the other parts of the IEC 62828 series.; Specific test procedures and additional requirements for given types of PMTs (pressure, temperature, level, flow, etc.) are covered by other parts of this series.; Sensing devices according to the IEC 60947 series are excluded from the scope of this document.; NOTE 1 In industrial and process applications, to indicate the process measurement transmitters, it is common also to use the terms "industrial transmitters", or "process transmitters".; NOTE 2 For better clarity, when the complete definition "industrial and process measurement transmitter" makes the sentence too long in this document, the short term "transmitter", or PMT, is used instead.

• Status: Published
• Public Enquiry End Date: 14-May-2024
• Publication Date: 12-Oct-2026
• ICS: 17.020 - Metrology and measurement in general
• ICS: 25.040.40 - Industrial process measurement and control
• Technical Committee: MOV - Measuring equipment for electromagnetic quantities
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 18-Aug-2026
• Due Date: 23-Oct-2026
• Completion Date: 13-Oct-2026
• Ref Project: EN IEC 62828-1:2026 - Reference conditions and procedures for testing industrial and process measurement transmitters - Part 1: General procedures for all types of transmitters

• Refers: SIST EN 60654-3:1998 - Operating conditions for industrial-process measurement and control equipment -- Part 3: Mechanical influences
• Effective Date: 21-Jul-2026
• Refers: SIST EN 61499-2:2006 - Function blocks -- Part 2: Software tools requirements
• Effective Date: 21-Jul-2026
• Refers: SIST EN 60068-2-27:2009 - Environmental testing -- Part 2-27: Tests - Test Ea and guidance: Shock
• Effective Date: 21-Jul-2026
• Refers: SIST EN 60068-2-6:2008 - Environmental testing - Part 2-6: Tests - Test Fc: Vibration (sinusoidal)
• Effective Date: 21-Jul-2026
• Refers: SIST EN IEC 60068-2-2:2026 - Environmental testing - Part 2-2: Tests - Test b: Dry heat (IEC 60068-2-2:2025)
• Effective Date: 21-Jul-2026
• Refers: SIST EN 60654-1:1998 - Industrial-process measurement and control equipment - Operating conditions -- Part 1: Climatic conditions
• Effective Date: 21-Jul-2026
• Refers: SIST EN 61010-1:2010 - Safety requirements for electrical equipment for measurement, control and laboratory use - Part 1: General requirements (IEC 61010-1:2010)
• Effective Date: 21-Jul-2026
• Refers: SIST EN IEC 60068-2-1:2026 - Environmental testing - Part 2-1: Tests - Test A: Cold (IEC 60068-2-1:2025)
• Effective Date: 21-Jul-2026
• Refers: SIST EN IEC 60068-2-78:2025 - Environmental testing - Part 2-78: Tests - Test Cab: Damp heat, steady state (IEC 60068-2-78:2025)
• Effective Date: 21-Jul-2026
• Refers: SIST EN 61499-4:2006 - Function blocks -- Part 4: Rules for compliance profiles
• Effective Date: 21-Jul-2026
• Refers: SIST EN IEC 61804-3:2020 - Devices and integration in enterprise systems - Function blocks (FB) for process control and electronic device description language (EDDL) - Part 3: EDDL syntax and semantics (IEC 61804-3:2020)
• Effective Date: 14-Jul-2026
• Refers: SIST EN IEC 61804-4:2020 - Devices and integration in enterprise systems - Function blocks (FB) for process control and electronic device description language (EDDL) - Part 4: EDD interpretation (IEC 61804-4:2020)
• Effective Date: 14-Jul-2026
• Refers: SIST EN 61499-1:2013 - Function blocks - Part 1: Architecture (IEC 61499-1:2012)
• Effective Date: 14-Jul-2026
• Refers: SIST EN IEC 61804-2:2018 - Function blocks (FB) for process control and electronic device description language (EDDL) - Part 2: Specification of FB concept (IEC 61804-2:2018)
• Effective Date: 14-Jul-2026
• Refers: SIST EN IEC 61804-5:2020 - Devices and intergration in enterprise systems - Function blocks (FB) for process control and electronic device description language (EDDL) - Part 5: EDDL Builtin library (IEC 61804-5:2020)
• Effective Date: 14-Jul-2026

SIST EN IEC 62828-1:2026 is a CLC standard for reference conditions and test procedures for industrial and process measurement transmitters (PMTs). It sets the common testing framework for all PMT types used in industrial process and machinery measurement and control, so manufacturers, test labs, quality teams and buyers can assess performance under the same conditions.

What does SIST EN IEC 62828-1:2026 specify?

SIST EN IEC 62828-1:2026 specifies the general framework for defining reference conditions and test procedures for all industrial and process measurement transmitters. It is the common Part 1 for the IEC 62828 series, and it is used with the parts that cover pressure, temperature, level and flow transmitters.

The scope treats an analogue PMT as a transmitter with only analogue current and/or voltage outputs. All PMTs with only digital outputs, or with both analogue and digital outputs, are treated as digital PMTs. Proximity devices according to the IEC 60947 series with analogue output are excluded.

The document is organized into clauses for scope, normative references, terms and definitions, the general PMT description, reference test conditions, test procedures, and test report and technical documentation. The informative annexes add architecture guidance, test matrices, uncertainty examples, fault-behaviour checks, throughput tests, documentation examples, alarm and range examples, and reference design criteria.

Annex	What it covers
A	General PMT architecture, including sensor, data processing, output, human interface, external interface and power supply assembly
B / C	Complete sets of test procedures for standard and operating reference test conditions
D	Checks for function blocks, including general qualitative checks and time-dependent and time-independent blocks
E	Example of measurement uncertainty determination
F	Fault behaviour, fault injection, and human fault tests
G	Throughput testing for digital PMT
I	Technical documentation, user manual, safety manual, commissioning and maintenance information, calibration certificates
J	Signal current range example for a 4 mA to 20 mA PMT, including underrange, overrange and alarm states
K	Reference design criteria for IP, IK, electrical safety, hazardous areas and functional safety

What are the key requirements of SIST EN IEC 62828-1:2026?

SIST EN IEC 62828-1:2026 requires the test program to match the PMT design, its interfaces and the intended operating conditions. In practice, the standard is not just about one accuracy test - it covers how to set up the device, how to classify tests, how to record results and how to document the outcome.

Reference conditions and test planning

Clause 5 defines reference test conditions for environment, power supply, load and mounting position, and it also covers process and atmospheric influences, vibration, shock, drop, topple and EMC. This matters because a transmitter can test well on the bench but drift or fail when temperature, vibration, load or power quality changes.

Clause 5.3.7 points to the IEC 61326 series for EMC immunity and emissions. Clause 5.3.6 sets power-supply classes for voltage and frequency, so the lab must test the transmitter against the supply quality expected in use.

Clause 6.1 classifies tests as type tests, acceptance tests and routine tests, and it also uses the wider idea of evaluation tests. Type tests check the design, routine tests check production and final calibration, and acceptance tests check supplied units against the customer or manufacturer specification.

Clause 6.1.3 states that, unless otherwise agreed, the uncertainty of the test facility and measuring equipment shall be better than or equal to one third of the uncertainty of the instrument under evaluation. That requirement matters because the test setup must be clearly better than the transmitter, otherwise the result is not credible.

Accuracy, behaviour and performance

Clause 6.2 defines the accuracy test approach. The PMT is preconditioned, allowed to stabilize after power-up, and then exercised through full-range traverses in both directions with specified test points. The results are processed as upscale and downscale errors and used to determine inaccuracy, measured error, non-linearity, non-conformity, hysteresis and non-repeatability.

For practical use, this means the report must show more than a pass/fail statement. It must show how the output changed across the range, whether the transmitter behaves differently on rising and falling input, and whether the measured values support the declared accuracy.

Clause 6.2.3 covers static behaviour tests such as insulation resistance, dielectric strength, power consumption, operation region for two-wire analogue PMTs, influence of supply variation, output-load effects, output ripple and overrange. These tests matter when selecting a transmitter for a loop-powered, noisy, high-load or overrange-prone application.

Operating-condition and digital-PMT tests

Clause 6.3 extends testing to operating reference conditions. It includes ambient temperature and humidity effects, vibration, shock, drop and topple, an accelerated operational life test, EMC tests, and further procedures for digital PMTs.

Clause 6.1.4 requires a preliminary assessment using checklists for functionality, configurability, hardware configuration, adjustment and tuning, operability and support. For digital PMTs, the checklists also cover communication compatibility, on-line and off-line configuration, restart conditions, fail-safe conditions, and function blocks.

Reporting and documentation

Clause 7 requires a test report and technical documentation, and it includes total probable error. This is the part that turns test results into usable evidence for quality files, procurement decisions, certification work and maintenance records.

What terms does SIST EN IEC 62828-1:2026 define?

SIST EN IEC 62828-1:2026 defines the test language used across the series, so users can compare results without guessing what a term means.

• Accuracy - the closeness of an indicated value to the true value of the measurand.
• Inaccuracy - the largest positive and negative deviation from the specified characteristic curve under the specified test conditions.
• Repeatability - the closeness of successive measurements under the same conditions, by the same method and instrument, over a short time.
• Hysteresis - the difference between the upscale and downscale outputs at the same input point in one test cycle.
• Non-linearity - the deviation from an ideal straight-line input-output relationship for a linear PMT.
• Non-conformity - the corresponding deviation for a PMT with a non-linear input-output relationship.
• Span - the algebraic difference between the upper and lower limits of the measuring range.
• Step response time - the time from a sudden input change until the output reaches and remains within the specified limits of its final value.

Who uses SIST EN IEC 62828-1:2026?

SIST EN IEC 62828-1:2026 is used by PMT manufacturers, test laboratories, calibration and metrology teams, quality assurance staff, and customers writing specifications or acceptance criteria. It is also used by commissioning, maintenance and integration personnel who need to verify that a transmitter is set up correctly and behaves as expected in service.

The standard is relevant in industrial process and machinery applications, especially where transmitters are connected to measuring and control systems, fieldbus networks or host systems. It is particularly useful when comparing analogue PMTs with digital PMTs, because the test approach covers both the basic signal path and the communication or software functions around it.

Which standards are used with SIST EN IEC 62828-1:2026?

SIST EN IEC 62828-1:2026 relies on several IEC and ISO documents to define terms, operating conditions, EMC, safety and uncertainty handling.

• IEC 60050-300, IEC Vocabularies for measurement terms used in the definitions.
• IEC 60068-2-1, -2-2, -2-6, -2-27, -2-31 and -2-78, environmental tests for cold, dry heat, vibration, shock, rough handling and damp heat.
• IEC 60079, for equipment intended for explosive gas atmospheres.
• IEC 60529 and IEC 62262, for IP and IK enclosure protection.
• IEC 60654-1, -3 and -4, for climatic, mechanical and corrosive operating conditions.
• IEC 61158 and IEC 61918, for fieldbus communication and installation in industrial premises.
• IEC 61326-1, for EMC requirements.
• IEC 61499 and IEC 61804, for function blocks.
• IEC 62381, for FAT, SAT and SIT.
• ISO 10012, ISO/IEC Guide 98-3 and ISO/IEC Guide 99, for measurement management, uncertainty and metrology terminology.
• IEC 62828-2, IEC 62828-3, IEC 62828-4 and IEC 62828-5, which give the specific procedures for pressure, temperature, level and flow transmitters.

What does the SIST EN IEC 62828-1:2026 document contain?

SIST EN IEC 62828-1:2026 contains checklists, matrices, example calculations and structured test procedures that support evaluation, acceptance and documentation. The annexes include examples for PMT architecture, uncertainty processing, fault injection and ranking, throughput under stand-alone and fieldbus conditions, and the technical content expected in datasheets and manuals.

The document also contains example tables and figures for error evaluation, measured error presentation and PMT signal ranges. These are useful when a team needs to build a lab test plan, compare measured performance with a specification, or document calibration and acceptance results in a consistent format.

Annex I lays out the technical documentation a supplier can provide, including model identification, hardware and software revision, measuring ranges, output characteristics, power supply, environmental and mechanical data, approvals and diagnostic functions. Annex K summarizes design-related reference topics such as enclosure protection, electrical safety, hazardous area use and functional safety, which helps when checking whether a transmitter design matches the intended installation.

SLOVENSKI STANDARD
01-november-2026
Referenčni pogoji in postopki za preskušanje industrijskih in procesnih merilnih
oddajnikov - 1. del: Splošni postopki za vse vrste oddajnikov (IEC 62828-1:2026)
Reference conditions and procedures for testing industrial and process measurement
transmitters - Part 1: General procedures for all types of transmitters (IEC 62828-1:2026)
Referenzbedingungen und Testmethoden für Industrie- und
Prozessmessgrößenumformer - Teil 1: Allgemeine Testmethoden für alle Arten von
Messumformern (IEC 62828-1:2026)
Conditions de référence et procédures pour l'essai des transmetteurs de mesure
industrielle et de processus - Partie 1: Procédures générales pour tous les types de
transmetteurs (IEC 62828-1:2026)
Ta slovenski standard je istoveten z: EN IEC 62828-1:2026
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62828-1

NORME EUROPÉENNE
EUROPÄISCHE NORM August 2026
ICS 17.020; 25.040.40 Supersedes EN IEC 62828-1:2018
English Version
Reference conditions and procedures for testing industrial and
process measurement transmitters - Part 1: General procedures
for all types of transmitters
(IEC 62828-1:2026)
Conditions de référence et procédures pour l'essai des Referenzbedingungen und Testmethoden für Industrie- und
transmetteurs de mesure industrielle et de processus - Prozessmessgrößenumformer - Teil 1: Allgemeine
Partie 1: Procédures générales pour tous les types de Testmethoden für alle Arten von Messumformern
transmetteurs (IEC 62828-1:2026)
(IEC 62828-1:2026)
This European Standard was approved by CENELEC on 2026-07-16. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62828-1:2026 E

European foreword
The text of document 65B/1306/FDIS, future edition 2 of IEC 62828-1, prepared by SC 65B
"Measurement and control devices" of IEC/TC 65 "Industrial-process measurement, control and
automation" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2027-08-31
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2029-08-31
document have to be withdrawn
This document supersedes EN IEC 62828-1:2018 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 62828-1:2026 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 60068-2-31 NOTE Approved as EN 60068-2-31
IEC 60079 (series) NOTE Approved as EN IEC 60079-7:2015/A1 (series)
IEC 60529:1989 NOTE Approved as EN 60529:1991 (not modified)
IEC 60654-2 NOTE Approved as EN 60654-2
IEC 60654-4 NOTE Approved as EN 60654-4
IEC 60721-3-1 NOTE Approved as EN IEC 60721-3-1
IEC 60721-3-2 NOTE Approved as EN IEC 60721-3-2
IEC 61158 (series) NOTE Approved as EN 61158 (series)
IEC 61508 (series) NOTE Approved as EN 61508 (series)
IEC 61511 (series) NOTE Approved as EN 61511 (series)
IEC 61784-1 (series) NOTE Approved as EN IEC 61784-1 (series)
IEC 61784-2 (series) NOTE Approved as EN IEC 61784-2 (series)
IEC 61784-5 (series) NOTE Approved as EN IEC 61784-5 (series)
IEC 61804-2 NOTE Approved as EN IEC 61804-2
IEC 61918 NOTE Approved as EN IEC 61918
IEC 61987-1:2024 NOTE Approved as EN IEC 61987-1:2024 (not modified)
IEC 61987-10:2009 NOTE Approved as EN 61987-10:2009 (not modified)
IEC 61987-11:2016 NOTE Approved as EN 61987-11:2017 (not modified)
IEC 61987-12:2016 NOTE Approved as EN 61987-12:2016 (not modified)
IEC 61987-13 NOTE Approved as EN 61987-13
IEC 61987-14:2016 NOTE Approved as EN 61987-14:2016 (not modified)
IEC 61987-15:2016 NOTE Approved as EN 61987-15:2017 (not modified)
IEC 62061 NOTE Approved as EN IEC 62061
IEC 62262:2002 NOTE Approved as EN 62262:2002 (not modified)
IEC 62381 NOTE Approved as EN IEC 62381
IEC 62382:2024 NOTE Approved as EN IEC 62382:2024 (not modified)
ISO 10012 NOTE Approved as EN ISO 10012
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 60068-2-1 - Environmental testing - Part 2-1: Tests - EN IEC 60068-2-1 -
Test A: Cold
IEC 60068-2-2 - Environmental testing - Part 2-2: Tests - EN IEC 60068-2-2 -
Test B: Dry heat
IEC 60068-2-6 - Environmental testing - Part 2-6: Tests - EN 60068-2-6 -
Test Fc: Vibration (sinusoidal)
IEC 60068-2-27 - Environmental testing - Part 2-27: Tests - EN 60068-2-27 -
Test Ea and guidance: Shock
IEC 60068-2-78 - Environmental testing - Part 2-78: Tests - EN IEC 60068-2-78 -
Test Cab: Damp heat, steady state
IEC 60654-1 - Industrial-process measurement and EN 60654-1 -
control equipment - Operating conditions -
Part 1: Climatic conditions
IEC 60654-3 - Operating conditions for industrial-process EN 60654-3 -
measurement and control equipment - Part
3: Mechanical influences
IEC 61010-1 - Safety requirements for electrical EN 61010-1 -
equipment for measurement, control, and
laboratory use - Part 1: General
requirements
IEC 61326 series Electrical equipment for measurement, - -
control and laboratory use - EMC
requirements
IEC 61499 series Function blocks -- Part 1: Architecture - series
IEC 61804 series Function blocks (FB) for process control EN IEC 61804 series
and electronic device description language
(EDDL) - Part 2: Specification of FB
concept
IEC 62828-1 ®
Edition 2.0 2026-06
INTERNATIONAL
STANDARD
Reference conditions and procedures for testing industrial and process
measurement transmitters -
Part 1: General procedures for all types of transmitters
ICS 17.020; 25.040.40 ISBN 978-2-8327-1273-3

IEC 62828-1:2026-06(en)
IEC 62828-1:2026 © IEC 2026
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviated terms . 8
3.1 Terms and definitions . 8
3.1.1 Terms related to accuracy . 8
3.1.2 Terms related to uncertainty . 14
3.1.3 Terms regarding operation and practical installation . 15
3.1.4 Terms related to test procedures . 16
3.2 Abbreviated terms . 16
3.3 Reference to IEC Common Data Dictionary . 17
4 General description of the PMT . 17
5 Reference test conditions . 17
5.1 General . 17
5.2 Standard reference test conditions . 18
5.2.1 General . 18
5.2.2 Environmental test conditions . 18
5.2.3 Power supply conditions . 18
5.2.4 Load conditions . 19
5.2.5 Mounting positions . 19
5.3 Reference test conditions for ambient and process quantities influencing
operation . 19
5.3.1 General . 19
5.3.2 Process conditions . 19
5.3.3 Environmental atmospheric conditions . 19
5.3.4 Mechanical vibration . 20
5.3.5 Shock . 21
5.3.6 Power supply . 21
5.3.7 Electromagnetic compatibility (EMC) . 21
6 Test procedures . 22
6.1 General . 22
6.1.1 Overview . 22
6.1.2 Classification of the tests . 22
6.1.3 Preparation of the tests . 23
6.1.4 Preliminary assessment . 24
6.2 Type tests at standard reference test conditions . 31
6.2.1 General . 31
6.2.2 Accuracy and related factors . 31
6.2.3 Static behaviour . 37
6.2.4 Dynamic behaviour . 41
6.3 Type tests at operating reference test conditions . 46
6.3.1 General . 46
6.3.2 Ambient temperature effects . 46
6.3.3 Ambient relative humidity effects . 48
6.3.4 Vibration effects . 48
IEC 62828-1:2026 © IEC 2026
6.3.5 Shock effects . 50
6.3.6 Accelerated operational life test . 50
6.3.7 EMC tests . 50
6.3.8 Further test procedures . 51
6.3.9 Additional tests for digital transmitters . 51
6.4 Routine tests. 52
6.5 Acceptance, integration, periodic and maintenance tests . 52
6.5.1 General . 52
6.5.2 Periodical verification . 52
6.5.3 Periodical calibration . 52
7 Test report . 53
7.1 General . 53
7.2 Test documentation . 53
7.3 Total probable error . 53
Annex A (informative) General description of a PMT . 55
A.1 General description of a PMT . 55
A.2 Sensor subsystem . 56
A.3 Data processing . 56
A.4 Output subsystem . 56
A.5 Human interface . 57
A.6 External system interface . 57
A.7 Power supply assembly . 57
Annex B (informative) Tests at the standard reference conditions . 58
Annex C (Informative) Tests at ambient and process reference conditions for influence
quantities . 60
Annex D (informative) Function block testing . 62
D.1 General . 62
D.2 General qualitative checks . 62
D.3 Time-dependent function blocks . 62
D.4 Time-independent function blocks . 62
Annex E (informative) Total probable error calculation . 63
Annex F (informative) Product documentation . 64
F.1 General . 64
F.2 Technical datasheet . 64
F.3 User manual . 67
F.4 Safety manual . 67
F.5 Storage, transportation and installation . 67
F.5.1 General . 67
F.5.2 Storage conditions . 67
F.5.3 Transportation conditions . 67
F.5.4 Mounting position . 68
F.5.5 Process connections . 68
F.5.6 Mechanical connections . 68
F.5.7 Output connections . 68
F.6 Calibration certificates . 68
Annex G (informative) Example of signal current range for a 4 to 20 mA PMT . 69
G.1 Measuring span . 69
G.2 Underrange . 69
IEC 62828-1:2026 © IEC 2026
G.3 Overrange . 69
G.4 Low alarm . 70
G.5 High alarm . 70
Bibliography . 71

Figure 1 – Principle diagram illustrating the definitions of warm-up time, settling time
and output signal . 12
Figure 2 – Block diagram of a generic PMT . 17
Figure 3 – Error curves corresponding to the example of Table 17 . 35
Figure 4 – Example of limit operation region in terms of output load resistance versus
supply voltage . 39
Figure 5 – Example of response with overshoot to a step input . 42
Figure 6 – Example of response without overshoot to a step input . 43
Figure 7 – Example 1 of frequency response . 44
Figure 8 – Example 2 of frequency response . 45
Figure 9 – Example of diagram of the compensation options . 47
Figure 10 – Example of an input signal and the corresponding output signal . 50
Figure A.1 – Schematic block diagram of an analogue industrial and process
measurement transmitter (example) . 55
Figure G.1 – Signal current range of a 4 mA to 20 mA transmitter . 69

Table 1 – Environmental test conditions . 18
Table 2 – Common ambient temperatures ranges . 20
Table 3 – Common ambient relative humidity ranges . 20
Table 4 – Vibration test levels . 21
Table 5 – Power supply ranges for voltage and frequency. 21
Table 6 – Example of number of measurement cycles and number and position of test
points. 23
Table 7 – Example of settings of span and lower range value adjustments for analogue
devices . 23
Table 8 – Checklist for assessing functionality . 25
Table 9 – Checklist for assessing configurability . 26
Table 10 – Checklist for assessing hardware configuration . 27
Table 11 – Checklist for assessing adjustment and tuning procedures . 27
Table 12 – Checklist for assessing operability . 28
Table 13 – Checklist for assessing dependability . 29
Table 14 – Checklist for assessing technical support . 30
Table 15 – Example of functions listing for a temperature compensated single variable
PMT (differential pressure) . 30
Table 16 – Example of functions listing for a temperature compensated multi-variable
PMT (differential pressure plus pressure and temperature) . 31
Table 17 – Example table of PMT errors . 34
Table B.1 – Summary of the tests at the reference conditions . 58
Table C.1 – Summary of the tests for influence quantities at the operating conditions . 60
Table F.1 – Example of compilation of technical data for a generic PMT . 65
IEC 62828-1:2026 © IEC 2026
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Reference conditions and procedures for testing industrial
and process measurement transmitters -
Part 1: General procedures for all types of 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 prepa-
ration 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 Stand-
ardization (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 inter-
ested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinter-
pretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications trans-
parently 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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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 ex-
penses 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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a) pa-
tent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
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shall not be held responsible for identifying any or all such patent rights.
IEC 62828-1 has been prepared by subcommittee 65B: Measurement and control devices, of
IEC Technical Committee 65: Industrial-process measurement, control and automation. It is an
International Standard.
This second edition cancels and replaces the first edition published in 2017. This edition con-
stitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) informative Annexes E, F, G and H have been removed;
b) a new informative Annex G “Example of signal current for a 4 mA to 20 mA PMT” has been
introduced (it has been moved from IEC 62828-2:2017 to this document);
IEC 62828-1:2026 © IEC 2026
c) the definitions of warm-up time, settling time and output signal have been moved from
IEC 62828-4:2020 to this document;
d) The definitions of “inaccuracy” and “accuracy” have been reworked;
e) The clause regarding test report has been reworked.
The text of this International Standard is based on the following documents:
Draft Report on voting
65B/1306/FDIS 65B/1320/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are de-
scribed in greater detail at www.iec.ch/publications.
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 webstore.iec.ch in the data related to the
specific document. At this date, the document will be
– reconfirmed,
– withdrawn, or
– revised.
IEC 62828-1:2026 © IEC 2026
INTRODUCTION
Most of the current IEC standards on industrial and process measurement transmitters are ra-
ther 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 electronic) and towards the measuring section (mostly mechanical). Even
if some standards dealing with digital process measurement transmitters already exist, they are
not sufficient, since some aspects of the performance are not covered by appropriate test meth-
ods.
In addition, existing IEC test standards for industrial and process measurement transmitters are
spread over many documents, so that for manufacturers and users it is 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, flow, level, etc.).
To help manufacturers and users, it was decided to review, complete and reorganize the rele-
vant IEC standards and to create a more suitable, effective and comprehensive standard series
that provides in a systematic way all the necessary specifications and tests required for 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 process meas-
urement 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;
– performance (its specification, tests and verification);
– environmental protection, hazardous areas application, functional safety, etc.;
– structure of the product documentation.
To cover in a systematic way all the topics to be addressed, the standard series is organized in
several parts. At the moment of the publication of this document, the IEC 62828 consists of the
following parts:
– Part 1: General procedures for all types of transmitters;
– Part 2: Specific procedures for pressure transmitters;
– Part 3: Specific procedures for temperature transmitters;
– Part 4: Specific procedures for level transmitters;
– Part 5: Specific procedures for flow transmitters.

IEC 62828-1:2026 © IEC 2026
1 Scope
This Part of IEC 62828 establishes a general framework for defining reference conditions and
test procedures applicable for assessing the measurement performances of all types of indus-
trial and process measurement transmitters (PMTs) used in measuring and control systems for
industrial process and machinery.
For the purpose of this document, an analogue PMT is a process measurement transmitter with
only analogue current and/or voltage output(s), irrespective the technology adopted and the
complexity of the circuitry. All the other process measurement transmitters, with digital output(s)
only or with hybrid analogue and digital output(s), are considered to be digital PMTs.
This document constitutes a common reference for the other parts of the IEC 62828 series.
Specific test procedures and additional requirements for given types of PMTs (pressure, tem-
perature, level, flow, etc.) are covered by other parts of this series.
Sensing devices according to the IEC 60947 series are excluded from the scope of this docu-
ment.
NOTE 1 In industrial and process applications, to indicate the process measurement transmitters, it is common also
to use the terms "industrial transmitters", or "process transmitters".
NOTE 2 For better clarity, when the complete definition "industrial and process measurement transmitter" makes
the sentence too long in this document, the short term "transmitter", or PMT, is used instead.
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 amend-
ments) applies.
IEC 60068-2-1, Environmental testing - Part 2-1: Tests - Test A: Cold
IEC 60068-2-2, Environmental testing - Part 2-2: Tests - Test B: Dry heat
IEC 60068-2-6, Environmental testing - Part 2-6: Tests - Test Fc: Vibration (sinusoidal)
IEC 60068-2-27, Environmental testing - Part 2-27: Tests - Test Ea and guidance: Shock
IEC 60068-2-78, Environmental testing - Part 2-78: Tests - Test Cab: Damp heat, steady state
IEC 60654-1, Industrial-process measurement and control equipment - Operating conditions -
Part 1: Climatic conditions
IEC 60654-3, Operating conditions for industrial-process measurement and control equipment -
Part 3: Mechanical influences
IEC 61010-1, Safety requirements for electrical equipment for measurement, control, and la-
boratory use - Part 1: General requirements
IEC 61326 (all parts), Electrical equipment for measurement, control and laboratory use - EMC
requirements
IEC 61499 (all parts), Function blocks
IEC 62828-1:2026 © IEC 2026
IEC 61804 (all parts), Devices and integration in enterprise systems - Function blocks (FB) for
process control and electronic device description language (EDDL)
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following ad-
dresses:
– IEC Electropedia: available at https://www.electropedia.org/
– ISO Online browsing platform: available at https://www.iso.org/obp
3.1.1 Terms related to accuracy
3.1.1.1
accuracy
quality which characterizes the ability of a measuring instrument
to provide an indicated value close to a true value of the measurand
Note 1 to entry: This term is used in the "true value" approach.
Note 2 to entry: Accuracy is all the better when the indicated value is closer to the corresponding true value.
[SOURCE: IEC 60050-311:2001, 311-06-08]
3.1.1.2
conformity
ability of a measuring instrument to provide an indication having a specified characteristic curve
which can be linear, logarithmic, parabolic, etc.
3.1.1.3
dead band
dead zone
finite range of values within which a variation of the input variable does not produce any meas-
urable change in the output variable
Note 1 to entry: When this type of characteristic is intentional, it is sometimes called neutral zone.
Note 2 to entry: This entry was numbered 351-24-14 in IEC 60050-351:2006.
Note 3 to entry: This value is usually insignificant for the actual instruments.
[SOURCE: IEC 60050-351:2013, 351-45-15, modified – Note 3 has been added.]
3.1.1.4
error
discrepancy between a computed, observed or measured value or condition, and the true, spec-
ified or theoretically correct value or condition
Note 1 to entry: An error within a system can be caused by failure of one or more of its components, or by activation
of a systematic fault.
[SOURCE: IEC 60050-192:2024, 192-03-02]
IEC 62828-1:2026 © IEC 2026
3.1.1.5
hysteresis
phenomenon represented by a characteristic curve which has a branch, called ascending
branch, for increasing values of the input variable, and a different branch, called descending
branch, for decreasing values of the input variable
Note 1 to entry: The CDD code of this entry for Electronic Data Exchange is ABB661 and the hysteresis is defined
as the difference between consecutive upscale and downscale outputs for any single test cycle at the same input
test point.
[SOURCE: IEC 60050-351:2013, 351-45-16, modified – The note to entry has been added.]
3.1.1.6
inaccuracy
maximum positive and negative deviation from the specified characteristic curve observed in
testing a device under specified conditions and by a specified procedure
Note 1 to entry: The term “accuracy” is defined in IEC 60050-300:2001, 311-06-08.
3.1.1.7
linearity
ability of a measuring instrument to provide an indication having a linear relationship with a
defined quantity other than an influence quantity
Note 1 to entry: The method of expression of lack of linearity is different for different kinds of instrument and is
established in each particular instance.
[SOURCE: IEC 60050-311:2001, 311-06-05]
3.1.1.8
long-term drift
drift in output monitored for 30 days at 90 % of span
[SOURCE: IEC 61987-1:2024, 3.23]
3.1.1.9
long-term stability
drift of zero output signal in percent of full scale after a given period of normal operating condi-
tions
Note 1 to entry: The long-term stability can be evaluated over a different period of time, e.g. 6 months, 1, 2 or
5 years.
Note 2 to entry: Depending on the type of PMT, the drift can be referred to an upper range limit (e.g. digital pressure
PMTs), a fixed value (e.g. certain level PMTs), a full scale (e.g. some analogue PMTs), etc.
[SOURCE: IEC 61987 #ABB551 in the IEC common data dictionary, modified – Notes 1 and 2
to entry have been added.]
3.1.1.10
measured error
largest positive or negative value of errors of the average upscale or downscale values at each
point of measurement
IEC 62828-1:2026 © IEC 2026
3.1.1.11
measuring range
range defined by two values of the measurand, or quantity to be supplied, within which the limits
of uncertainty of the measuring instrument are specified
Note 1 to entry: An instrument can have several measuring ranges.
[SOURCE: IEC 60050-311:2001, 311-03-12]
3.1.1.12
non-conformity
deviation from ideal behavior for devices that have a non-linear input/output relationship (which
can be linear, logarithmic, parabolic, etc.), determined from the curve plotted using the overall
average of corresponding upscale and downscale errors
Note 1 to entry: Non-conformity can be calculated and expressed in one of three ways:
– independent: curve positioned so as to minimize the maximum deviation;
– terminal-based: curve positioned so as to coincide with the actual characteristic curve at the upper and lower
range-values;
– zero-based: curve positioned so as to coincide with the actual characteristic curve at the lower range-value.
Note 2 to entry: The corresponding properties are to be found in the CDD.
[SOURCE: IEC 61987-13:2016, 3.3.6, modified – Specifications have been added in parenthe-
ses.]
3.1.1.13
non-linearity
deviation from ideal behavior for devices that have a linear input/out relationship, determined
from the curve plotted using the overall average of corresponding upscale and downscale errors
Note 1 to entry: Non-linearity can be calculated and expressed in one of three ways:
– independent: line positioned so as to minimize the maximum deviation;
– terminal-based: line positioned so as to coincide with the actual characteristic curve at the upper and lower
range-values;
– zero-based: line positioned so as to coincide with the actual characteristic curve at the lower range-value.
Note 2 to entry: The corresponding properties are to be found in the CDD.
[SOURCE: IEC 61987-13:2016, 3.3.7]
3.1.1.14
overrange
input signal larger than an instrument is designed to accept or measure
Note 1 to entry: That part of the proportional range where the analogue output signal represents a process value
above the configured measuring range.
Note 2 to entry: The output signal can be not calibrated in overrange state.
3.1.1.15
overshoot
for a step response, the maximum transient deviation from the final steady-state value of the
output variable, expressed as a percentage of the difference between the final and the initial
steady-state values
[SOURCE: IEC 61987 #ABD684 in the IEC common data dictionary]
IEC 62828-1:2026 © IEC 2026
3.1.1.16
repeatability
closeness of agreement between the results of successive measurements of the same meas-
urand, carried out under the same conditions of measurement, i.e.:
– by the same measurement procedure,
– by the same observer,
– with the same measuring instruments, used under the same conditions,
– in the same laboratory,
– at relatively short intervals of time.
...