EN ISO 15212-2:2002

Oscillation-type density meters - Part 2: Process instruments for homogeneous liquids (ISO 15212-2:2002)

The standard specifies metrological and other requirements for modular and non-modular density meters of the oscillation type, which are used inline or online in process for homogeneous fluids. A method for adjustment and calibration is given.

Dichtemessgeräte nach dem Schwingerprinzip - Teil 2: Prozessgeräte für homogene Flüssigkeiten (ISO 15212-2:2002)

Dieser Teil von ISO 15212 legt messtechnische und Anforderungen unter anderem an Dichtemessgeräte nach dem Schwingerprinzip und für deren Funktionseinheiten fest (siehe 4.2), die in Prozessen für alle Arten von homogenen Flüssigkeiten angewendet werden. Dies schließt verflüssigte Gase mit ein. Auch werden Anweisungen und Methoden zur Vorjustierung, Justierung und Kalibrierung der Prozessgeräte gegeben. Die Geräte sind entweder vollständige Systeme oder Funktionseinheiten, die zu einem vollständigen Messsystem kombiniert werden können.
Dieser Teil von ISO 15212 beschreibt nicht die Anwendung der Prozessdichtemessgeräte für besondere Anwendungen oder Produkte, zum Beispiel für Mineralölprodukte oder Getränke. Diese Anwendungen können durch zuständige Institutionen wie ISO oder durch verantwortliche Behörden festgelegt werden.
Es gehört auch nicht zum Anwendungsbereich dieses Teils von ISO 15212, Gerätespezifikationen für besondere Anwendungsgebiete festzulegen; diese können in den entsprechenden Verfahrensnormen gefunden werden.
Dieser Teil von ISO 15212 richtet sich an Hersteller von Dichtemessgeräten und an Stellen, die die Normenkonformität von Dichtemessgeräten prüfen und zertifizieren. Diese Internationale Norm gibt auch Empfehlungen für Justierung und Kalibrierung von Prozessdichtemessgeräten.
Für Labordichtemessgeräte nach dem Schwingerprinzip gilt Teil 1 dieser Internationalen Norm.

Densimètres à oscillation - Partie 2: Instruments industriels pour liquides homogènes (ISO 15212-2:2002)

La présente partie de l'ISO 15212 spécifie les exigences métrologiques et autres relatives aux densimètres à oscillation et à leurs unités fonctionnelles, utilisés dans des processus industriels pour tous types de liquides homogènes, y compris les gaz liquéfiés. Elle donne également des instructions et des méthodes d'installation, de préréglage, de réglage et d'étalonnage d'instruments industriels. Ces instruments sont soit des systèmes complets, soit des unités fonctionnelles pouvant être combinées pour former un système de mesurage complet.  La présente partie de l'ISO 15212 ne spécifie pas la méthode d'utilisation des densimètres industriels pour des applications ou des produits particuliers tels que les produits pétroliers ou les boissons. De telles méthodes 'utilisation peuvent être définies par les institutions compétentes comme I'ISO ou les organes gouvernementaux responsables.  La présente partie de l'ISO 15212 n'établit de spécification sur les instruments pour aucune application particulière.  Pour cela, il convient de se reporter à la norme correspondante, traitant de la méthode d'utilisation.  La présente partie de l'ISO 15212 s'adresse aux fabricants de densimètres et aux organismes chargés de la vérification et de la certification de la conformité des densimètres. De plus, la présente partie de I'ISO 15212 donne des recommandations pour le réglage et l'étalonnage de densimètres industriels par l'utilisateur.  Les densimètres à oscillation pour laboratoires sont traitées dans l'ISO 15212-1.

Denzimetri - oscilacijski tip - 2. del: Procesni instrumenti za homogene tekočine (ISO 15212-2:2002)

General Information

• Status: Published
• Publication Date: 28-Feb-2002
• ICS: 17.060 - Measurement of volume, mass, density, viscosity
• Technical Committee: CEN/TC 332 - Laboratory equipment
• Drafting Committee: CEN/TC 332/WG 3 - Metrology
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 15-Dec-2007
• Completion Date: 15-Dec-2007
• Ref Project: SIST EN ISO 15212-2:2002 - Oscillation-type density meters - Part 2: Process instruments for homogeneous liquids (ISO 15212-2:2002)

Relations

• Corrected By: EN ISO 15212-2:2002/AC:2009 - Oscillation-type density meters - Part 2: Process instruments for homogeneous liquids (ISO 15212-2:2002/Cor 1:2008)
• Effective Date: 22-Dec-2008

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2002
'HQ]LPHWULRVFLODFLMVNLWLSGHO3URFHVQLLQVWUXPHQWL]DKRPRJHQHWHNRþLQH
,62
Oscillation-type density meters - Part 2: Process instruments for homogeneous liquids
(ISO 15212-2:2002)
Dichtemessgeräte nach dem Schwingerprinzip - Teil 2: Prozessgeräte für homogene
Flüssigkeiten (ISO 15212-2:2002)
Densimetres a oscillation - Partie 2: Instruments industriels pour liquides homogenes
(ISO 15212-2:2002)
Ta slovenski standard je istoveten z: EN ISO 15212-2:2002
ICS:
17.060 Merjenje prostornine, mase, Measurement of volume,
gostote, viskoznosti mass, density, viscosity
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 15212-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2002
ICS 17.060
English version
Oscillation-type density meters - Part 2: Process instruments for
homogeneous liquids (ISO 15212-2:2002)
Densimètres à oscillation - Partie 2: Instruments industriels Dichtemessgeräte nach dem Schwingerprinzip - Teil 2:
pour liquides homogènes (ISO 15212-2:2002) Prozessgeräte für homogene Flüssigkeiten (ISO 15212-
2:2002)
This European Standard was approved by CEN on 1 March 2002.
CEN 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 Management Centre or to any CEN 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 CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15212-2:2002 E
worldwide for CEN national Members.

CORRECTED  2002-04-17
Foreword
This document (ISO 15212-2:2002) has been prepared by Technical Committee ISO/TC 48
"Laboratory glassware and related apparatus" in collaboration with Technical Committee
CEN/TC 332 "Laboratory equipment", the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication
of an identical text or by endorsement, at the latest by September 2002, and conflicting
national standards shall be withdrawn at the latest by September 2002.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,
Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the
United Kingdom.
Endorsement notice
The text of the International Standard ISO 15212-2:2002 has been approved by CEN as a
European Standard without any modifications.
NOTE  Normative references to International Standards are listed in annex ZA (normative).
Annex ZA
(normative)
Normative references to International Publicationswith their relevant
European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text, and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions
of any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
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
ISO 15212-1 1998 Oscillation-type density meters - Part EN ISO 15212-1 1999
1: Laboratory instruments
INTERNATIONAL ISO
STANDARD 15212-2
First edition
2002-03-01
Oscillation-type density meters —
Part 2:
Process instruments for homogeneous
liquids
Densimètres à oscillation —
Partie 2: Instruments industriels pour liquides homogènes

Reference number
ISO 15212-2:2002(E)
©
ISO 2002
ISO 15212-2:2002(E)
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ii ISO 2002 – All rights reserved

ISO 15212-2:2002(E)
Contents Page
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Principle and functional units . 2
4.1 Measuring principle . 2
4.2 Functional units . 2
5 Density sensor . 4
5.1 Sensor material . 4
5.2 Sensor design . 4
6 Requirements and tests . 4
6.1 General . 4
6.2 Density measuring transducer . 4
6.3 Liquid temperature measurement . 6
6.4 Display and output of results . 7
6.5 Auxiliary units and data transfer . 7
6.6 Safety requirements . 8
6.7 Electromagnetic compatibility . 8
7 Preadjustment and adjustment . 8
7.1 Preadjustment of process density meters . 8
7.2 Preadjustment of density measuring transducers . 8
7.3 Adjustment of installed density measuring transducers . 8
7.4 Adjustment of processing units . 8
8 Calibration . 9
8.1 Laboratory calibration . 9
8.2 In-situ calibration . 11
9 Process density meter accuracy . 13
9.1 Accuracy requirements . 13
9.2 Laboratory conformity test . 13
9.3 In-situ tests . 14
9.4 Test procedure and conformity assessment . 14
10 Installation . 15
11 Operating manual . 15
12 Marking . 16
©
ISO 2002 – All rights reserved iii

ISO 15212-2:2002(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this part of ISO 15212 may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO 15212-2 was prepared by Technical Committee ISO/TC 48, Laboratory glassware and
related apparatus, Subcommittee SC 4, Density measuring instruments.
ISO 15212 consists of the following parts, under the general title Oscillation-type density meters:
— Part 1: Laboratory instruments
— Part 2: Process instruments for homogeneous liquids
©
iv ISO 2002 – All rights reserved

ISO 15212-2:2002(E)
Introduction
Density values of pure water at different temperatures and information on how to calculate the density values at
different pressures can be found in ISO 15212-1:1998, annex A.
©
ISO 2002 – All rights reserved v

INTERNATIONAL STANDARD ISO 15212-2:2002(E)
Oscillation-type density meters —
Part 2:
Process instruments for homogeneous liquids
1 Scope
This part of ISO 15212 specifies metrological requirements, among others, for oscillation-type density meters as well
as for functional units (see 4.2) of oscillation-type density meters, which are used in process for all kinds of
homogeneous liquids. This includes liquified gases. Instructions and methods for installation, preadjustment,
adjustment and
...