SS-EN-ISO-15970 Natural gas - Measurement of properties - Volumetric properties: density, pressure, temperature and compression factor (ISO 15970:2008)


Document Center Inc. is an authorized dealer of SIS standards.
The following bibliographic material is provided to assist you with your purchasing decision:

This international Standard gives requirements and procedures for the measurement of the properties of natural gas that are used mainly for volume calculation and volume conversion: density at reference and at operating conditions, pressure, temperature and compression factor. Only those methods and instruments are considered that are suitable for field operation under the conditions of natural gas transmission and distribution, installed either in-line or on-line, and that do not involve the determination of the gas composition. This International Standard gives examples for currently used instruments that are available commercially and of interest to the natural gas industry. NOTE Attention is drawn to requirements for approval of national authorization agencies and to national legal regulations for the use of these devices for commercial or official trade purposes. The density at reference conditions (sometimes referred to as normal, standard or even base density) is required for conversion of volume data and can be used for other physical properties. Density at operating conditions is measured for mass-flow measurement and volume conversion using the observed line density and can be used for other physical properties. This International Standard covers density transducers based on vibrating elements, normally suitable for measuring ranges of 5 kg/m3 to 250 kg/m3. Pressure measurement deals with differential, gauge and absolute pressure transmitters. It considers both analogue and smart transmitters (i.e. microprocessor based instruments) and, if not specified otherwise, the corresponding paragraphs refer to differential, absolute and gauge pressure transmitters without distinction.

To find similar documents by classification:

75.060 (Natural gas)

75.180.30 (Volumetric equipment and measurements)

This document comes with our free Notification Service, good for the life of the document.

This document is available in either Paper or PDF format.




Designation Name

SS-EN ISO 15970:2014

Revision Level




Publication Date

March 24, 2014



Page Count


International Equivalent

EN ISO 15970:2014(IDT); ISO 15970:2008(IDT)