SIST EN ISO 8222:2020

Petroleum measurement systems - Calibration - Volumetric measures, proving tanks and field measures (including formulae for properties of liquids and materials) (ISO 8222:2020)

EN-ISO 8222 describes the design, use and calibration of volumetric measures (capacity measures) which are intended for use in fixed locations in a laboratory or in the field. This document gives guidance on both standard and non-standard measures. It also covers portable and mobile measures. This document is applicable to the petroleum industry; however, it may be applied more widely to other applications.This document excludes measures for cryogenic liquids and pressurized measures as used for liquid petroleum gas (LPG) and liquefied natural gas (LNG).Volumetric measures are classified as test measures or prover tanks depending on capacity and design.Measures described in this document are primarily designed, calibrated and used to measure volumes from a measure which is wetted and drained for a specified time before use and designated to deliver. Many of the provisions, however, apply equally to measures which are used to measure a volume using a clean and dry measure and designated to contain.Guidance is given regarding commonly expected uncertainties and calibration specifications.The document also provides, in Annex A, reference formulae describing the properties of water and other fluids and materials used in volumetric measurement more generally.

Messsysteme für Mineralölerzeugnisse - Kalibrierung - Temperaturkorrekturen zur Anwendung auf volumetrische Bezugsmessbehälter (ISO 8222:2020)

Dieses Dokument beschreibt die Konstruktion, Verwendung und Kalibrierung von volumetrischen Maßen (Hohlmaßen), die für den Einsatz an festen Orten in einem Laboratorium oder im Feld vorgesehen sind. Dieses Dokument enthält Leitlinien sowohl zu genormten als auch nicht genormten Maßen. Es umfasst außerdem tragbare und mobile Maße. Dieses Dokument gilt für die Mineralölindustrie; es darf jedoch auf andere Anwendungen ausgeweitet werden.
Dieses Dokument schließt Maße für kryogene Flüssigkeiten und druckbeaufschlagte Maße, wie sie für Flüssiggas (LPG, en: liquid petroleum gas) und Flüssigerdgas (LNG, en: liquefied natural gas) verwendet werden, aus.
Volumetrische Maße sind in Abhängigkeit von dem Fassungsvermögen und der Konstruktion als Prüfmaße oder Bezugsmessbehälter eingestuft.
Die in diesem Dokument beschriebenen Maße werden hauptsächlich konstruiert, kalibriert und verwendet, um Volumina von einem Maß zu messen, das vor der Verwendung für eine festgelegte Zeit benetzt und entleert wird und für die Bereitstellung (Ablauf) bestimmt ist. Viele der Bestimmungen gelten jedoch gleichermaßen für Maße, die verwendet werden, um ein Volumen mit einem sauberen und trockenen Maß zu messen, und die für die Aufnahme (Einguss) bestimmt sind.
Es sind Leitlinien hinsichtlich der üblicherweise erwarteten Unsicherheiten und Kalibrierungsspezifikationen angeführt.
Dieses Dokument enthält in Anhang A außerdem Referenz-Gleichungen, mit denen die Eigenschaften von Wasser und anderen Fluiden und Materialien, die bei volumetrischen Messungen verwendet werden, ganz allgemein beschrieben werden.

Systèmes de mesure du pétrole - Étalonnage - Contenants de mesure volumétriques, jauges étalons et contenants de mesure de travail (y compris les formules relatives aux propriétés des liquides et des matériaux) (ISO 8222:2020)

Le présent document décrit la conception, l'utilisation et l'étalonnage des contenants de mesure volumétriques (contenants de mesure de capacité) destinés à être utilisés dans des lieux fixes, en laboratoire ou sur le terrain. Le présent document fournit des recommandations à la fois pour les contenants de mesure aux conditions de référence et pour les contenants de mesure aux conditions d'essai. Il concerne également les contenants de mesure portatifs et mobiles. Le présent document s'applique à l'industrie pétrolière. Toutefois, il peut s'appliquer plus largement à d'autres applications.
Le présent document exclut les contenants de mesure destinés aux liquides cryogéniques et les contenants de mesure sous pression utilisés pour le gaz de pétrole liquéfié (GPL) et pour le gaz naturel liquéfié (GNL).
Les contenants de mesure volumétriques sont classés contenants de mesure d'essai ou jauges étalons, en fonction de leur capacité et de leur conception.
Les contenants de mesure décrits dans le présent document sont avant tout conçus, étalonnés et utilisés en vue de mesurer des volumes à l'aide d'un contenant de mesure désigné pour livrer, mouillé puis égoutté pendant une durée spécifiée avant son utilisation. Cependant, de nombreuses spécifications s'appliquent aussi aux contenants de mesure désignés pour contenir et utilisés pour mesurer un volume à l'aide d'un contenant de mesure propre et sec.
Le présent document fournit aussi des recommandations concernant les incertitudes généralement attendues et les spécifications d'étalonnage.
L'Annexe A du document fournit en outre des formules de référence qui décrivent les propriétés de l'eau et des autres fluides et matériaux utilisés plus généralement pour les mesurages volumétriques.

Naftni merilni sistemi - Umerjanje - Volumetrični ukrepi, rezervoarji in terenski ukrepi (vključno s formulami za lastnosti tekočin in materialov) (ISO 8222:2020)

General Information

• Status: Published
• Public Enquiry End Date: 02-Jun-2019
• Publication Date: 07-May-2020
• ICS: 75.180.30 - Volumetric equipment and measurements
• Technical Committee: NAD - Petroleum products, lubricants and related products
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 29-Apr-2020
• Due Date: 04-Jul-2020
• Completion Date: 08-May-2020
• Ref Project: EN ISO 8222:2020 - Petroleum measurement systems - Calibration - Volumetric measures, proving tanks and field measures (including formulae for properties of liquids and materials) (ISO 8222:2020)

Relations

• Replaces: SIST EN ISO 8222:2003 - Petroleum measurement systems - Calibration - Temperature corrections for use when calibrating volumetric proving tanks (ISO 8222:2002)
• Effective Date: 01-Jun-2020
• Amended By: SIST EN ISO 8222:2020/A1:2022 - Petroleum measurement systems - Calibration - Volumetric measures, proving tanks and field measures (including formulae for properties of liquids and materials) - Amendment 1: Correction of two typographical errors (ISO 8222:2020/Amd 1:2022)
• Effective Date: 01-Mar-2022
• Replaces: SIST EN ISO 8222:2003 - Petroleum measurement systems - Calibration - Temperature corrections for use when calibrating volumetric proving tanks (ISO 8222:2002)
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 8222:2020
01-junij-2020
Nadomešča:
SIST EN ISO 8222:2003
Naftni merilni sistemi - Umerjanje - Volumetrični ukrepi, rezervoarji in terenski
ukrepi (vključno s formulami za lastnosti tekočin in materialov) (ISO 8222:2020)
Petroleum measurement systems - Calibration - Volumetric measures, proving tanks and
field measures (including formulae for properties of liquids and materials) (ISO
8222:2020)
Messsysteme für Mineralölerzeugnisse - Kalibrierung - Temperaturkorrekturen zur
Anwendung auf volumetrische Bezugsmessbehälter (ISO 8222:2020)
Systèmes de mesure du pétrole - Étalonnage - Contenants de mesure volumétriques,
jauges étalons et contenants de mesure de travail (y compris les formules relatives aux
propriétés des liquides et des matériaux) (ISO 8222:2020)
Ta slovenski standard je istoveten z: EN ISO 8222:2020
ICS:
75.180.30 Oprema za merjenje Volumetric equipment and
prostornine in merjenje measurements
SIST EN ISO 8222:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 8222:2020

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SIST EN ISO 8222:2020


EN ISO 8222
EUROPEAN STANDARD

NORME EUROPÉENNE

April 2020
EUROPÄISCHE NORM
ICS 75.180.30 Supersedes EN ISO 8222:2002
English Version

Petroleum measurement systems - Calibration -
Volumetric measures, proving tanks and field measures
(including formulae for properties of liquids and
materials) (ISO 8222:2020)
Systèmes de mesure du pétrole - Étalonnage - Messsysteme für Mineralölerzeugnisse - Kalibrierung -
Contenants de mesure volumétriques, jauges étalons et Temperaturkorrekturen zur Anwendung auf
contenants de mesure de travail (y compris les volumetrische Bezugsmessbehälter (ISO 8222:2020)
formules relatives aux propriétés des liquides et des
matériaux) (ISO 8222:2020)
This European Standard was approved by CEN on 17 February 2020.

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 CEN-CENELEC 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 CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8222:2020 E
worldwide for CEN national Members.

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SIST EN ISO 8222:2020
EN ISO 8222:2020 (E)
Contents Page
European foreword . 3

2

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SIST EN ISO 8222:2020
EN ISO 8222:2020 (E)
European foreword
This document (EN ISO 8222:2020) has been prepared by Technical Committee ISO/TC 28 "Petroleum
and related products, fuels and lubricants from natural or synthetic sources" in collaboration with
Technical Committee CEN/TC 19 “Gaseous and liquid fuels, lubricants and related products of
petroleum, synthetic and biological origin.” the secretariat of which is held by NEN.
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 October 2020, and conflicting national standards shall
be withdrawn at the latest by October 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 8222:2002.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 8222:2020 has been approved by CEN as EN ISO 8222:2020 without any modification.

3

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SIST EN ISO 8222:2020

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SIST EN ISO 8222:2020
INTERNATIONAL ISO
STANDARD 8222
Third edition
2020-03
Petroleum measurement systems —
Calibration — Volumetric measures,
proving tanks and field measures
(including formulae for properties of
liquids and materials)
Reference number
ISO 8222:2020(E)
©
ISO 2020

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SIST EN ISO 8222:2020
ISO 8222:2020(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved

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SIST EN ISO 8222:2020
ISO 8222:2020(E)

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, symbols and units . 1
3.1 Terms and definitions . 1
3.2 Symbols and units . 8
4 Traceability . 9
5 General design characteristics of volumetric measures .10
5.1 General design .10
5.2 Design to indicate the volume — Resolution .12
5.2.1 Neck size .12
5.2.2 Gauge glass .12
5.2.3 Scales .13
5.2.4 Adjustment of scale and calibrated volume.15
5.2.5 Levelling .15
5.3 Additional design aspects .15
5.3.1 Temperature measurement .15
5.3.2 Valves and connections .16
5.3.3 Size of measures .17
5.4 Filling and drainage .18
5.4.1 Drainage times and fluids .18
5.4.2 Filling and drainage methods .19
5.5 Markings .20
6 Test measures .21
6.1 Overview .21
6.2 Design and construction of test measures .23
7 Proving tanks .24
7.1 Overview .24
7.2 General construction .28
7.3 Bottom neck .28
7.4 Strength .29
7.5 Support .29
7.6 Size .29
7.7 Mobility .29
7.8 Overflow and vapour recovery .29
7.9 Filling and drainage .29
8 Alternative designs .30
8.1 High-accuracy designs .30
8.2 Automatic pipettes.30
8.3 Proving tanks with bottom sight gauge .30
9 Calibration .31
9.1 General .31
9.2 Common calibration procedures .31
9.3 Gravimetric calibration .33
9.3.1 Principle .33
9.3.2 Calibration circuit and equipment .33
9.3.3 Procedure for calibrating a measure gravimetrically .34
9.4 Volumetric calibration .34
9.4.1 Principle .34
9.4.2 Calibration circuit and equipment .35
© ISO 2020 – All rights reserved iii

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SIST EN ISO 8222:2020
ISO 8222:2020(E)

9.4.3 Procedure for calibrating a measure volumetrically (water pour) .36
9.4.4 Procedure for calibrating a measure volumetrically (water withdraw) .36
9.4.5 Additional notes on procedures .37
9.5 Calibration by reference meter .38
9.5.1 Principle .38
9.5.2 Calibration circuit .38
9.5.3 Equipment .39
9.5.4 Procedure for calibration by reference meter .40
9.6 Calibration of neck scales .40
10 Calculations.41
10.1 Overview .41
10.2 Reference volume .41
10.3 Transferred volume (volumetric method) .42
10.4 Transferred volume (gravimetric method) .43
10.5 Calibrated volume of test device .44
10.6 Multiple fills .45
10.7 Calibration of a measure using a reference measure .45
10.8 Calibration of a flowmeter using a measure as reference .46
10.9 Calibration of a displacement (pipe) prover using a measure as reference .46
11 Calibrating and setting the neck and scale .46
11.1 Calibrating the neck .46
11.2 Setting the scales .47
12 Safety .48
Annex A (informative) Properties of fluids and materials .49
Annex B (informative) Temperature measurement and thermometers .63
Annex C (informative) Standard glass contents measures .65
Annex D (informative) Meniscus reading .66
Annex E (informative) Accuracy and uncertainty of volumetric measures .67
Bibliography .68
iv © ISO 2020 – All rights reserved

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SIST EN ISO 8222:2020
ISO 8222:2020(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see
www .iso .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 28, Petroleum and related products, fuels
and lubricants from natural or synthetic sources, Subcommittee SC 2, Measurement of petroleum and
related products, in collaboration with the European Committee for Standardization (CEN) Technical
Committee CEN/TC 19, Gaseous and liquid fuels, lubricants and related products of petroleum, synthetic
and biological origin, in accordance with the Agreement on technical cooperation between ISO and CEN
(Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 8222:2002), which has been technically
revised. The main changes to the previous edition are as follows:
— revision of the title and scope to allow the document to cover the design, calibration and use of a
wide range of volumetric measures comprising proving tanks, test measures, field and standard
measures;
— provision of revised, updated and extended formulae to allow calculation of temperature correction
including the addition of formulae for saline water, other liquids and material properties.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
© ISO 2020 – All rights reserved v

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SIST EN ISO 8222:2020
ISO 8222:2020(E)

Introduction
Volumetric, or capacity, measures are used to provide an accurate measure of volume, thereby providing
a calibration reference for other volume-measuring devices, such as pipe displacement provers or
flowmeters.
Volume measures are categorized in terms of capacity, test measures being below 20 l. Measures
above 20 l are categorised as prover tanks. Standard measures are designed to comply with regulatory
guidance and hence have specified volumes. Other measures have non-standard volumes specifically
designed to suit an application, for example measures to accompany a small volume prover.
Volumetric measures can be used to calibrate flowmeters, both duty and reference meters. They can
also be used to calibrate secondary volume measures, displacement (pipe) provers and storage tanks.
Annex A provides the recommended formulae used in the calibration and use of volumetric measures
and for other volumetric measurements. This includes pure and saline water properties, the properties
of hydrocarbon liquids and the materials of construction of volumetric measuring devices.
vi © ISO 2020 – All rights reserved

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SIST EN ISO 8222:2020
INTERNATIONAL STANDARD ISO 8222:2020(E)
Petroleum measurement systems — Calibration —
Volumetric measures, proving tanks and field measures
(including formulae for properties of liquids and
materials)
WARNING — The use of this document could involve hazardous materials, operations and
equipment. This document does not purport to address all of the safety problems associated
with its use. It is the responsibility of the user of this document to establish appropriate safety
and health practices.
1 Scope
This document describes the design, use and calibration of volumetric measures (capacity measures)
which are intended for use in fixed locations in a laboratory or in the field. This document gives
guidance on both standard and non-standard measures. It also covers portable and mobile measures.
This document is applicable to the petroleum industry; however, it may be applied more widely to other
applications.
This document excludes measures for cryogenic liquids and pressurized measures as used for liquid
petroleum gas (LPG) and liquefied natural gas (LNG).
Volumetric measures are classified as test measures or prover tanks depending on capacity and design.
Measures described in this document are primarily designed, calibrated and used to measure volumes
from a measure which is wetted and drained for a specified time before use and designated to deliver.
Many of the provisions, however, apply equally to measures which are used to measure a volume using
a clean and dry measure and designated to contain.
Guidance is given regarding commonly expected uncertainties and calibration specifications.
The document also provides, in Annex A, reference formulae describing the properties of water and
other fluids and materials used in volumetric measurement more generally.
2 Normative references
There are no normative references in this document.
3 Terms, definitions, symbols and units
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
© ISO 2020 – All rights reserved 1

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SIST EN ISO 8222:2020
ISO 8222:2020(E)

3.1.1
accuracy
closeness of the agreement between a measured quantity value and a true quantity value of a measurand
Note 1 to entry: The concept ‘measurement accuracy’ is not a quantity and should not be given a numerical value.
The quantitative expression of accuracy should be in terms of uncertainty. “Good accuracy” or “more accurate”
implies small measurement error. Any given numerical value should be taken as indicative of this.
[SOURCE: VIM: 2012, 2.13]
3.1.2
adjustment
set of operations carried out on a measuring system so that it provides prescribed indications
corresponding to given values of a quantity to be measured
Note 1 to entry: Adjustment should not be confused with calibration, which is a prerequisite for adjustment.
Note 2 to entry: After adjustment, a recalibration is usually required.
[SOURCE: VIM: 2012, 3.11]
3.1.3
automatic pipette
overflow pipette
high precision measure, where the volume withdrawn is defined by a top overflow weir rather than a
gauge scale
3.1.4
brim measure
field measure where the volume is defined by an overflow from the top edge of the neck
3.1.5
calibration
operation that, under specified conditions, in a first step, establishes a rel
...

SLOVENSKI STANDARD
oSIST prEN ISO 8222:2019
01-maj-2019
Naftni merilni sistemi - Umerjanje - Temperaturne korekcije pri kalibriranju
prostornine etalonskih posod (ISO/DIS 8222:2019)
Petroleum measurement systems - Calibration - Temperature corrections for use when
calibrating volumetric proving tanks (ISO/DIS 8222:2019)
Messsysteme für Mineralölerzeugnisse - Kalibrierung - Temperaturkorrekturen zur
Anwendung auf volumetrische Bezugsmessbehälter (ISO/DIS 8222:2019)
Systèmes de mesure du pétrole - Étalonnage - Corrections de température à utiliser lors
de l'étalonnage des jauges étalons (ISO/DIS 8222:2019)
Ta slovenski standard je istoveten z: prEN ISO 8222
ICS:
75.180.30 Oprema za merjenje Volumetric equipment and
prostornine in merjenje measurements
oSIST prEN ISO 8222:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 8222:2019

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oSIST prEN ISO 8222:2019
DRAFT INTERNATIONAL STANDARD
ISO/DIS 8222
ISO/TC 28/SC 2 Secretariat: BSI
Voting begins on: Voting terminates on:
2019-03-19 2019-06-11
Petroleum measurement systems — Calibration —
Temperature corrections for use when calibrating
volumetric proving tanks
Systèmes de mesure du pétrole — Étalonnage — Corrections de température à utiliser lors de l'étalonnage
des jauges étalons
ICS: 75.180.30
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 8222:2019(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2019

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oSIST prEN ISO 8222:2019

ISO/DIS 8222:2019(E)


Contents

Foreword . 3
Introduction . 4
Scope . 5
Normative references . 5
Definitions and symbols . 6
3.1 Definitions . 6
3.2 Symbols and units . 12
Traceability . 13
General design characteristics of volumetric measures . 15
5.1 General design . 15
5.2 Design to indicate the volume. Resolution. 16
5.3 Additional design aspects . 20
5.4 Filling and drainage . 22
5.5 Markings . 25
Test measures . 25
6.1 Overview . 25
6.2 Construction . 28
Proving tanks . 29
7.1 Overview . 29
7.2 General construction . 34
7.3 Bottom neck . 34
7.4 Strength . 34
7.5 Support . 34
7.6 Size . 34
7.7 Mobility . 34
7.8 Overflow and vapour recovery. 35
7.9 Filling and drainage . 35
Alternative designs . 35
8.1 High accuracy designs . 35
8.2 Automatic pipettes . 35
COPYRIGHT PROTECTED DOCUMENT
8.3 Proving tanks with bottom sight gauge . 36
© ISO 2019
Calibration . 36
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
9.1 General . 36
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester. 9.2 Gravimetric calibration . 38
ISO copyright office
9.3 Volumetric calibration . 40
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
9.4 Calibration by reference meter . 43
Phone: [phone]
Fax: [phone]
9.5 Calibration of neck scales . 45
Email: [e-mail]
Website: www.iso.org
Calculations . 46
Published in Switzerland
ii © ISO 2019 – All rights reserved
1

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oSIST prEN ISO 8222:2019
ISO/DIS 8222:2019(E)


Contents

Foreword . 3
Introduction . 4
Scope . 5
Normative references . 5
Definitions and symbols . 6
3.1 Definitions . 6
3.2 Symbols and units . 12
Traceability . 13
General design characteristics of volumetric measures . 15
5.1 General design . 15
5.2 Design to indicate the volume. Resolution. 16
5.3 Additional design aspects . 20
5.4 Filling and drainage . 22
5.5 Markings . 25
Test measures . 25
6.1 Overview . 25
6.2 Construction . 28
Proving tanks . 29
7.1 Overview . 29
7.2 General construction . 34
7.3 Bottom neck . 34
7.4 Strength . 34
7.5 Support . 34
7.6 Size . 34
7.7 Mobility . 34
7.8 Overflow and vapour recovery. 35
7.9 Filling and drainage . 35
Alternative designs . 35
8.1 High accuracy designs . 35
8.2 Automatic pipettes . 35
8.3 Proving tanks with bottom sight gauge . 36
Calibration . 36
9.1 General . 36
9.2 Gravimetric calibration . 38
9.3 Volumetric calibration . 40
9.4 Calibration by reference meter . 43
9.5 Calibration of neck scales . 45
Calculations . 46
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10.1 Overview . 46
10.2 Reference volume . 46
10.3 Transferred volume (volumetric method) . 47
10.4 Transferred volume (gravimetric method) . 48
10.5 Calibrated volume of test device . 48
10.6 Multiple fills . 50
10.7 Calibration of a measure using a reference measure . 50
10.8 Calibrations using a flowmeter. 50
10.9 Calibration of a small volume prover . 51
Calibrating and setting the neck and scale . 51
11.1 Calibrating the neck . 51
11.2 Setting the scales . 52
Safety . 52
Bibliography . 52
(Normative) Properties of fluids and materials . 54
(Informative)  Temperature measurement and thermometers . 68
(Informative) Standard glass contents measures . 69
(Informative) Meniscus reading . 71
(Informative) Accuracy and uncertainty of volumetric measures . 73
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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 2.
The main task of technical committees is to prepare International Standards. 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.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of
ISO documents should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent
rights identified during the development of the document will be in the Introduction and/or on the ISO list of
patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL:
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 28, Petroleum products and lubricants,
Subcommittee SC 2, Dynamic petroleum measurement.
This third edition cancels and replaces the second edition (ISO 8222:2002: Petroleum measurement systems —
Calibration — Temperature corrections for use when calibrating volumetric proving tanks), which has been extensively
revised in both scope and content.
This revision extends the scope of ISO 8222:2002 to cover the design calibration and use of a wide range of
volumetric measures and proving tanks. This revision is based on the draft TC 28 SC2 ISO DIS 12916:1998.
This document was balloted to proceed to FDIS but no further action was taken and the document dropped
from the programme.
Annex A of this document forms an integral part of this International Standard and contains the revised,
extended and updated content from ISO 8222:2002. This provides options for formulae covering the
properties of pure through to saline water, and also includes other materials and fluids used with volumetric
measurement. Annex A provides formulae and updated formulae for other standards and measurements
currently referring to ISO 8222:2002.

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Introduction
Volumetric, or capacity, measures are used to provide an accurate measure of a volume hence providing a
calibration reference for other volume measuring devices e.g. pipe displacement provers or flowmeters.
Volume measures are categorized in terms of capacity, test measures being below 20 l. Measures above 20 l
are categorised as prover tanks. Standard measures are designed to comply with regulatory guidance and
hence have specified volumes. Many measures have non-standard volumes specifically designed to suit an
application e.g. measures to accompany a small volume prover.
Volumetric measures can be used to calibrate flowmeters, both duty and reference meters. They may also be
used to calibrate secondary volume measures, pipe provers and storage tanks.
This document provides guidance for the design, calibration and use of volumetric measures in general,
applies to all suitable liquids and is not restricted to hydrocarbon liquid applications.
Annex A provides the recommended formulae used in the calibration and use of volumetric measures and
other volumetric measurements. This annex supersedes and extends the scope of ISO 8222:2002 by
including pure and saline water properties. It now also includes the properties of hydrocarbon liquids and
materials of construction of volumetric measuring devices.
This document gives guidance on both standard and non-standard measures. The requirements for
regulatory or contractual requirements such as those given in OIML and National regulations will take
precedence over the guidance given in this document.

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WARNING — The use of this document may involve hazardous materials, operations and equipment. This
International Standard does not purport to address all of the safety problems associated with its use. It is the
responsibility of the user of this document to establish appropriate safety and health practices.
Scope
1.1  This document describes the design, use and calibration of volumetric measures (capacity measures)
which are intended for use in fixed locations in a laboratory or in the field. It also covers portable and mobile
measures. The scope covers applications particularly, but not exclusively, in the petroleum industry.
Volumetric measures are classified as test measures or prover tanks depending on capacity and design.
1.2  The document excludes pressurised measures as used for LPG and LNG and measures for cryogenic
liquids. Measures described in this document are primarily designed, calibrated and used to measure
volumes "to deliver", i.e. wetted and drained for a specified time before use. Many of the provisions will
however apply equally to measures which are used "to contain", i.e. to measure a volume using a clean and
dry measure.
1.3  Annex A provides a reference for formulae describing the properties of water and other materials used
to define volume. This includes density, thermal expansion, compressibility and viscosity for pure, impure
and saline water. It also provides property information for hydrocarbon liquids and materials used to
construct measures.
1.4 Guidance is given regarding commonly expected uncertainties and calibration specifications.
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.
ISO 4006:1991, Measurement of fluid flow in closed conduits — Vocabulary and symbols
JCGM 200:2012, International vocabulary of metrology — Basic and general concepts and associated terms
(VIM 2012)

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Definitions and symbols
3.1 Definitions
For the purposes of this document, the following terms and definitions 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

3.1.1
accuracy
closeness of the agreement between the measured quantity value and a true quantity value of a measurand
[SOURCE: VIM:2012]
Note 1 to entry: The concept "measurement accuracy" is not a quantity and should not be given a numerical value. The
quantitative expression of accuracy should be in terms of uncertainty. "Good accuracy" or "more accurate" implies
small measurement error. Any given numerical value should be taken as indicative of this.
3.1.2
adjustment
set of operations carried out on a measuring system so that it provides prescribed indications corresponding
to given values of the quantity measured
[1]
[SOURCE: VIM:2012 ]
EXAMPLE This entails bringing a measuring instrument (meter) into a satisfactory performance and accuracy.
Note 1 to entry: Adjustment should not be confused with calibration which will be prerequisite for adjustment.
Note 2 to entry: After adjustment a recalibration is usually required.
3.1.3
automatic pipette
overflow pipette
high precision measure, where the volume withdrawn is defined by a top overflow weir rather than a gauge
scale
3.1.4
brim measure
field measure where the volume is defined by an overflow from the top edge of the neck
3.1.5
calibration
set of operations that establish, under specified conditions, the relationship between quantities indicated by
an instrument and the corresponding values realized by standards
[1] [2]
[SOURCE: VIM 1993 and VIM:2012 ]
Note 1 to entry: Calibration should not be confused with adjustment of a measuring system.
Note 2 to entry: The term "proving" is used in the oil industry and has the same meaning but will include a check of the results
against specified acceptance criteria.
3.1.6
calibrated volume
volume of a measure between a top and bottom datum as determined by calibration and expressed at a
standard temperature
3.1.7
clingage
film of liquid that adheres to the inside surface of a volumetric measure after it has been emptied resulting in
a residual volume

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3.1.8
correction factor
numerical factor by which the uncorrected result of a measurement at the measured conditions is multiplied
Note 1 to entry: Correction factors to standard conditions are used to convert a volume at observed conditions to the
volume at another (standard) condition.
3.1.9
displacement plunger
plunger
device consisting of a piston which is used for adjusting the volume of a volumetric measure

3.1.10
drain time
total time taken to empty the measure or tank to leave a consistent residual volume
Note 1 to entry: Drain time commences when the drain valve is opened and ceases when closed after a defined time or
condition. Drain time may be divided into two parts; first drain time and final drain time.
3.1.11
drain time (final)
in a two stage emptying process it follows the cessation of the first drain time and finish
...