Life cycle data for process plant: Reference data for observations and measurements: Foreword


Life cycle data for process plant: Reference data for observations and measurements	ISO/WD 15926-x:200x(E)

Cover page
Table of contents
Copyright
Foreword
Introduction
1	Scope
2	Normative references
3	Terms, definitions, abbreviations and symbols

4	Observations and measurements reference data
	4.1	Introduction to observations and measurements reference data
	4.2	Observing activity
	4.3	Information
	4.4	Temporal part and time
	4.5	Variation of property
	4.6	Monitoring activity
	4.7	Monitoring criterion

A	Information object registration
B	Document URN
C	Reference data relationships
D	Reference data as OWL
E	Temporal part example
Bibliography
Index

Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national stan-dards 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 techni-cal 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 Stan-dards 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.

In other circumstances, particularly when there is an urgent market requirement for such documents, a technical committee may decide to publish other types of normative document:

an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in an ISO working group and is accepted for publication if it is approved by more than 50% of the members of the parent committee casting a vote;
an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting a vote.

An ISO/PAS or ISO/TS is reviewed every three years with a view to deciding whether it can be trans-formed into an International Standard.

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.

ISO/TS 15926-x was prepared by Technical Committee ISO/TC 184, Automation systems and integration, Subcommittee SC 4, Industrial data.

ISO 15926 is organized as a series of parts, each published separately. The structure of ISO 15926 is described in ISO 15926-1.