scope:

This International Standard specifies dimensions, ranges, construction, performance, calibration and output characteristics of turbine meters for gas flow measurement.

It also deals with installation conditions, leakage testing and pressure testing and provides a series of informative annexes A to E including recommendations for use, field checks and perturbations of the fluid flowing.

In many countries, some or all of the items covered by this International Standard are subject to mandatory regulations imposed by the laws of these countries. In cases where conflict exists between such mandatory regulations and this International Standard, the former shall prevail.