EN 61987-16:2017

SLOVENSKI STANDARD
01-november-2017
Merjenje in nadzor industrijskega procesa - Strukture podatkov in elementi v
katalogih procesne opreme - 16. del: Seznam lastnosti opreme za merjenje gostote
za elektronsko izmenjavo podatkov (IEC 61987-16:2016)
Industrial-process measurement and control - Data structures and elements in process
equipment catalogues - Part 16: Lists of properties (LOPs) for density measuring
equipment for electronic data exchange (IEC 61987-16:2016)
Industrielle Leittechnik - Datenstrukturen und -elemente in Katalogen der
Prozessleittechnik - Teil 16: Merkmalleisten (ML) für Dichtemessgeräte für den
elektronischen Datenaustausch (IEC 61987-16:2016)
Mesure et commande des processus industriels - Éléments et structures de données
dans les catalogues d'équipements de processus - Partie 16: Listes de propriétés (LOP)
pour équipement de mesure de densité pour l'échange électronique de données (IEC
61987-16:2016)
Ta slovenski standard je istoveten z: EN 61987-16:2017
ICS:
01.110 7HKQLþQDGRNXPHQWDFLMD]D Technical product
L]GHONH documentation
17.060 Merjenje prostornine, mase, Measurement of volume,
gostote, viskoznosti mass, density, viscosity
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 61987-16

NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2017
ICS 25.040.40; 35.040.99; 35.240.30

English Version
Industrial-process measurement and control - Data structures
and elements in process equipment catalogues - Part 16: Lists of
properties (LOPs) for density measuring equipment for electronic
data exchange
(IEC 61987-16:2016)
Mesure et commande des processus industriels - Éléments Industrielle Leittechnik - Datenstrukturen und -elemente in
et structures de données dans les catalogues Katalogen der Prozessleittechnik - Teil 16: Merkmalleisten
d'équipements de processus - Partie 16: Listes de (ML) für Dichtemessgeräte für den elektronischen
propriétés (LOP) pour équipement de mesure de densité Datenaustausch
pour l'échange électronique de données (IEC 61987-16:2016)
(IEC 61987-16:2016)
This European Standard was approved by CENELEC on 2017-01-19. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61987-16:2017 E
European foreword
The text of document 65E/512/FDIS, future edition 1 of IEC 61987-16, prepared by SC 65E “Devices
and integration in enterprise systems” 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 (dop) 2017-10-21
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2020-04-21
• latest date by which the national
standards conflicting with the
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 61987-16:2016 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 standards
indicated:
IEC 60079-0:2011 NOTE Harmonized as EN 60079-0:2012
IEC 60947-5-6:1999 NOTE Harmonized as EN 60947-5-6:2000
IEC 61298-1:2008 NOTE Harmonized as EN 61298-1:2008
IEC 61298-2:2008 NOTE Harmonized as EN 61298-2:2008
IEC 61298-3:2008 NOTE Harmonized as EN 61298-3:2008
IEC 61360-1 NOTE Harmonized as EN 61360-1
IEC 61360-2 NOTE Harmonized as EN 61360-2
IEC 61360-5 NOTE Harmonized as EN 61360-5
IEC 61784-1:2014 NOTE Harmonized as EN 61784-1:2014
IEC 61987-1 NOTE Harmonized as EN 61987-1
IEC 61987-92 NOTE Harmonized as EN 61987-92
ISO 5167-2:2003 NOTE Harmonized as EN ISO5167-2:2003

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When 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.cenelec.eu.
Publication Year Title EN/HD Year
IEC 61360 series Standard data elements types with EN 61360 series
associated classification scheme for
electric items
IEC 61987-10 2009 Industrial-process measurement and EN 61987-10 2009
control - Data structures and elements in
process equipment catalogues - Part 10:
Lists of Properties (LOPs) for Industrial-
Process Measurement and Control for
Electronic Data Exchange - Fundamentals
- -  + AC 2011
IEC 61987-11 2016 Industrial-Process Measurement and EN 61987-11 2017
Control - Data Structures and Elements in
Process Equipment Catalogues. Part 11:
List of Properties (LOP) of measuring
equipment for electronic data exchange -
generic structures
IEC 61987-16 ®
Edition 1.0 2016-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial-process measurement and control – Data structures and elements in

process equipment catalogues –

Part 16: Lists of properties (LOPs) for density measuring equipment for

electronic data exchange
Mesure et commande des processus industriels – Éléments et structures de

données dans les catalogues d’équipements de processus –

Partie 16: Listes de propriétés (LOP) pour équipement de mesure de densité

pour l’échange électronique de données

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040.40; 35.040.99; 35.240.30 ISBN 978-2-8322-3756-4

– 2 – IEC 61987-16:2016 © IEC 2016
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 General . 7
4.1 Overview. 7
4.2 Depiction of OLOP and DLOPs . 7
4.3 Examples of DLOP block usage . 7
Annex A (normative) Operating list of properties for density measuring equipment . 13
Annex B (normative) Device lists of properties for density measuring equipment . 14
B.1 Density transmitter . 14
B.2 Buoyancy density transmitter . 14
B.3 Refractive index density transmitter . 14
B.4 Vibrating tube density transmitter . 14
B.5 Radiometric density transmitter . 15
B.6 Vibrating fork/rod density transmitter . 15
B.7 Ultrasonic density transmitter . 15
B.8 Microwave density transmitter . 15
B.9 Separate density transmitter . 16
Annex C (normative) Property library . 17
Annex D (normative) Block library for considered device types . 18
Bibliography . 19

Table 1 – Example for a vibrating tube density transmitter . 8

IEC 61987-16:2016 © IEC 2016 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL-PROCESS MEASUREMENT AND CONTROL –
DATA STRUCTURES AND ELEMENTS IN PROCESS
EQUIPMENT CATALOGUES –
Part 16: Lists of properties (LOPs) for density
measuring equipment for electronic data exchange

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 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
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 61987-16 has been prepared by subcommittee 65E: Devices and
integration in enterprise systems, of IEC technical committee 65: Industrial-process
measurement, control and automation.
The text of this standard is based on the following documents:
FDIS Report on voting
65E/512/FDIS 65E/520/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.

– 4 – IEC 61987-16:2016 © IEC 2016
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 61987, published under the general title Industrial-process
measurement and control – Data structures and elements in process equipment catalogues,
can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IEC 61987-16:2016 © IEC 2016 – 5 –
INTRODUCTION
The exchange of product data between companies, business systems, engineering tools, data
systems within companies and, in the future, control systems (electrical, measuring and
control technology) can run smoothly only when both the information to be exchanged and the
use of this information has been clearly defined.
Prior to this document, requirements on process control devices and systems were specified
by customers in various ways when suppliers or manufacturers were asked to quote for
suitable equipment. The suppliers in their turn described the devices according to their own
documentation schemes, often using different terms, structures and media (paper, databases,
CDs, e-catalogues, etc.). The situation was similar in the planning and development process,
with device information frequently being duplicated in a number of different information
technology (IT) systems.
Any method that is capable of recording all existing information only once during the planning
and ordering process and making it available for further processing, gives all parties involved
an opportunity to concentrate on the essentials. A precondition for this is the standardization
of both the descriptions of the objects and the exchange of information.
IEC 61987 series proposes a method for standardization which will help both suppliers and
users of measuring equipment to optimize workflows both within their own companies and in
their exchanges with other companies. Depending on their role in the process, engineering
firms may be considered here to be either users or suppliers.
The method specifies measuring equipment by means of blocks of properties. These blocks
are compiled into lists of properties (LOPs), each of which describes a specific equipment
(device) type. The IEC 61987 series covers both properties that may be used in an inquiry or
a proposal and detailed properties required for integration of the equipment in computer
systems for other tasks.
IEC 61987-10 defines structure elements for constructing lists of properties for electrical and
process control equipment in order to facilitate automatic data exchange between any two
computer systems in any possible workflow, for example engineering, maintenance or
purchasing workflow and to allow both the customers and the suppliers of the equipment to
optimize their processes and workflows. IEC 61987-10 also provides the data model for
assembling the LOPs.
IEC 61987-11 specifies the generic structure for operating and device lists of properties
(OLOPs and DLOPs). It lays down the framework for further parts of IEC 61987 in which
complete LOPs for device types measuring a given physical variable and using a particular
measuring principle will be specified. The generic structure may also serve as a basis for the
specification of LOPs for other industrial-process control instrument types such as control
valves and signal processing equipment.
IEC 61987-16 concerns density measuring equipment. It provides one operating LOP for all
types of density transmitters which can be used, for example, as a request for various sorts of
quotation. The DLOPs for the various density transmitter types provided in this part of
IEC 61987 can be used in very different ways in the computer systems of equipment
manufacturers and suppliers, in CAE and similar systems of EPC contractors and other
engineering companies and especially different plant maintenance systems of the plant
owners. The OLOP and the DLOPs provided correspond to the guidelines specified in
IEC 61987-10 and IEC 61987-11.

– 6 – IEC 61987-16:2016 © IEC 2016
INDUSTRIAL-PROCESS MEASUREMENT AND CONTROL –
DATA STRUCTURES AND ELEMENTS IN PROCESS
EQUIPMENT CATALOGUES –
Part 16: Lists of properties (LOPs) for density
measuring equipment for electronic data exchange

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