![header thumbnail](/images/publishers\iso_cover.gif)
ISO 15971:2008
Current
The latest, up-to-date edition.
![header thumbnail](/images/publishers\iso_cover.gif)
Natural gas Measurement of properties Calorific value and Wobbe index
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
English, French
03-12-2008
ISO 15971:2008 concerns the measurement of calorific value of natural gas and natural gas substitutes by nonseparative methods, i.e. methods that do not involve the determination of the gas composition, nor calculations from it. ISO 15971:2008 describes the principles of operation of a variety of instruments in use for this purpose, and provides guidelines for the selection, evaluation, performance assessment, installation and operation of these.
Calorific values can be expressed on a mass basis, a molar basis or, more commonly, a volume basis. The working range for superior calorific value of natural gas, on the volume basis, is usually between 30 MJ/m3 and 45 MJ/m3 at standard reference conditions (see ISO 13443). The corresponding range for the Wobbe index is usually between 40 MJ/m3 and 60 MJ/m3.
ISO 15971:2008 neither endorses nor disputes the claims of any commercial manufacturer for the performance of an instrument. Its central thesis is that fitness-for-purpose in any particular application (defined in terms of a set of specific operational requirements) can be assessed only by means of a well-designed programme of experimental tests. Guidelines are provided for the proper content of these tests.
DevelopmentNote |
Supersedes ISO/DIS 15971. (12/2008)
|
DocumentType |
Standard
|
Pages |
50
|
PublisherName |
International Organization for Standardization
|
Status |
Current
|
Standards | Relationship |
NF EN ISO 15971 : 2014 | Identical |
NBN EN ISO 15971 : 2014 | Identical |
NEN EN ISO 15971 : 2014 | Identical |
NS EN ISO 15971 : 2014 | Identical |
I.S. EN ISO 15971:2014 | Identical |
PN EN ISO 15971 : 2014 | Identical |
SN EN ISO 15971:2014 | Identical |
UNI EN ISO 15971 : 2014 | Identical |
UNE-EN ISO 15971:2014 | Identical |
BS EN ISO 15971:2014 | Identical |
EN ISO 15971 : 2014 | Identical |
DIN EN ISO 15971:2014-09 | Identical |
DIN EN ISO 15971 E : 2014 | Identical |
NEN ISO 15971 : 2008 | Identical |
PN ISO 15971 : 2013 | Identical |
10/30218038 DC : DRAFT MAY 2010 | BS ISO 15112 - NATURAL GAS - ENERGY DETERMINATION |
BS EN 16723-2:2017 | Natural gas and biomethane for use in transport and biomethane for injection in the natural gas network Automotive fuels specification |
DIN EN 16723-2:2014-06 (Draft) | NATURAL GAS AND BIOMETHANE FOR USE IN TRANSPORT AND BIOMETHANE FOR INJECTION IN THE NATURAL GAS NETWORK - PART 2: AUTOMOTIVE FUELS SPECIFICATION |
I.S. EN 16723-2:2017 | NATURAL GAS AND BIOMETHANE FOR USE IN TRANSPORT AND BIOMETHANE FOR INJECTION IN THE NATURAL GAS NETWORK - PART 2: AUTOMOTIVE FUELS SPECIFICATION |
I.S. EN ISO 15112:2014 | NATURAL GAS - ENERGY DETERMINATION (ISO 15112:2011) |
BS EN ISO 13686:2013 | Natural gas. Quality designation |
I.S. EN ISO 13686:2013 | NATURAL GAS - QUALITY DESIGNATION (ISO 13686:2013) |
DIN EN 16723-2:2017-10 | NATURAL GAS AND BIOMETHANE FOR USE IN TRANSPORT AND BIOMETHANE FOR INJECTION IN THE NATURAL GAS NETWORK - PART 2: AUTOMOTIVE FUELS SPECIFICATION |
DIN EN 16726 E : 2016 | GAS INFRASTRUCTURE - QUALITY OF GAS - GROUP H |
PD ISO/TR 29922:2017 | Natural gas. Supporting information on the calculation of physical properties according to ISO 6976 |
BS ISO 15112 : 2011 | NATURAL GAS - ENERGY DETERMINATION |
DIN EN ISO 15112 E : 2014 | NATURAL GAS - ENERGY DETERMINATION (ISO 15112:2011) |
I.S. EN 16726:2015 | GAS INFRASTRUCTURE - QUALITY OF GAS - GROUP H |
UNE-EN ISO 13686:2014 | Natural gas - Quality designation (ISO 13686:2013) |
DIN EN 1776:2016-05 | GAS INFRASTRUCTURE - GAS MEASURING SYSTEMS - FUNCTIONAL REQUIREMENTS |
I.S. EN 1776:2015 | GAS INFRASTRUCTURE - GAS MEASURING SYSTEMS - FUNCTIONAL REQUIREMENTS |
DIN EN 16723-2 E : 2017 | NATURAL GAS AND BIOMETHANE FOR USE IN TRANSPORT AND BIOMETHANE FOR INJECTION IN THE NATURAL GAS NETWORK - PART 2: AUTOMOTIVE FUELS SPECIFICATION |
DIN EN 16726:2016-04 | GAS INFRASTRUCTURE - QUALITY OF GAS - GROUP H |
EN ISO 15112:2014 | NATURAL GAS - ENERGY DETERMINATION (ISO 15112:2011) |
UNI EN ISO 13686 : 2013 | NATURAL GAS - QUALITY DESIGNATION |
BS EN ISO 15112:2014 | Natural gas. Energy determination |
UNE-EN ISO 15112:2014 | Natural gas - Energy determination (ISO 15112:2011) |
UNE-EN 16726:2016 | Gas infrastructure - Quality of gas - Group H |
DIN EN ISO 13686:2013-12 | NATURAL GAS - QUALITY DESIGNATION (ISO 13686:2013) |
UNE-EN 1776:2017 | Gas infrastructure - Gas measuring systems - Functional requirements |
BS EN 1776:2015 | Gas infrastructure. Gas measuring systems. Functional requirements |
EN ISO 13686:2013 | Natural gas - Quality designation (ISO 13686:2013) |
EN 16723-2:2017 | Natural gas and biomethane for use in transport and biomethane for injection in the natural gas network - Part 2: Automotive fuels specification |
EN 1776:2015 | Gas infrastructure - Gas measuring systems - Functional requirements |
EN 16726:2015 | Gas infrastructure - Quality of gas - Group H |
13/30277457 DC : 0 | BS EN 1776 - GAS INFRASTRUCTURE - GAS MEASURING SYSTEMS - FUNCTIONAL REQUIREMENTS |
BS EN 16726 : 2015 | GAS INFRASTRUCTURE - QUALITY OF GAS - GROUP H |
DIN EN ISO 15112:2014-09 | Natural gas - Energy determination (ISO 15112: 2011) |
UNI EN ISO 15112 : 2014 | NATURAL GAS - ENERGY DETERMINATION |
ISO/TR 29922:2017 | Natural gas Supporting information on the calculation of physical properties according to ISO 6976 |
ISO 15112:2011 | Natural gas Energy determination |
ISO 13686:2013 | Natural gas Quality designation |
ISO 10715:1997 | Natural gas — Sampling guidelines |
IEC 61000-6-4:2006+AMD1:2010 CSV | ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 6-4: GENERIC STANDARDS - EMISSION STANDARD FOR INDUSTRIAL ENVIRONMENTS |
IEC 61000-6-2:2016 | Electromagnetic compatibility (EMC) - Part 6-2: Generic standards - Immunity standard for industrial environments |
ISO/IEC Guide 98:1993 | Guide to the expression of uncertainty in measurement (GUM) |
IEC 61000-6-1 : 3.0 | ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 6-1: GENERIC STANDARDS - IMMUNITY STANDARD FOR RESIDENTIAL, COMMERCIAL AND LIGHT-INDUSTRIAL ENVIRONMENTS |
ISO 5725-6:1994 | Accuracy (trueness and precision) of measurement methods and results — Part 6: Use in practice of accuracy values |
IEC 61000-6-3:2006+AMD1:2010 CSV | Electromagnetic compatibility (EMC) - Part 6-3: Generic standards - Emission standard for residential, commercial and light-industrial environments |
ISO 13443:1996 | Natural gas Standard reference conditions |
ISO 6142:2001 | Gas analysis Preparation of calibration gas mixtures Gravimetric method |
IEC 61000-6-1:2016 | Electromagnetic compatibility (EMC) - Part 6-1: Generic standards - Immunity standard for residential, commercial and light-industrial environments |
ISO 14111:1997 | Natural gas — Guidelines to traceability in analysis |
IEC 61000-6-4:2006+AMD1:2010 CSV | Electromagnetic compatibility (EMC) - Part 6-4: Generic standards - Emission standard for industrial environments |
ISO 6145-1:2003 | Gas analysis Preparation of calibration gas mixtures using dynamic volumetric methods Part 1: Methods of calibration |
IEC 61000-6-2 : 3.0:2016 | ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 6-2: GENERIC STANDARDS - IMMUNITY STANDARD FOR INDUSTRIAL ENVIRONMENTS |
Please Login or Create an Account so you can add users to your Multi user PDF Later.
Important note : Users cannot be edited or removed once added to your Multi user PDF.
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.