DIN EN ISO 15112:2014-09

The text of ISO 15112:2011 has been prepared by Technical Committee ISO/TC 193 "Natural gas" of the International Organization of Standardization and has been taken over as EN ISO 15112:2014. The text of ISO 15112:2011 has been approved by CEN as EN ISO 15112:2014 without any modification. This International Standard provides the means for energy determination of natural gas by measurement or by calculation, and describes the related techniques and measures that are necessary to take. The calculation of thermal energy is based on the separate measurement of the quantity, either by mass or by volume, of gas transferred (at interfaces) and its measured or calculated calorific value. The general means of calculating uncertainties are also given. This International Standard applies to any gas-measuring station from domestic to very large high-pressure transmission.