PREN 1776 : DRAFT 2013

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 General requirement
5 Basic requirements for measuring systems
6 Energy Determination
7 Design of gas measuring system
8 Construction of a gas measuring installation
9 Testing of the gas measuring installation/station
10 Pre-commissioning and commissioning of the gas
   measuring installation
11 Operation and maintenance
12 Decommissioning
Annex A (informative) - Guideline for the selection
        of meters
Annex B (informative) - Sensor test procedures
Annex C (informative) - Set of formulae to calculate
        volume or mass to energy
Annex D (informative) - Uncertainty calculations for the
        energy determination
Annex E (informative) - Examples of the assessment of
        conformity of the metrological performance
        of a gas measuring system taken from England
        and the Netherlands
Annex F (informative) - Documentations and records
Annex G (informative) - Typical examples of positions of
        gas measuring installations
Bibliography

Describes functional requirements for the design, construction, testing, commissioning/decommissioning, operation, maintenance and where appropriate calibration, together with suitable documented provisions for all new gas measuring systems and any major changes of existing systems used for custody transfer.