AS 4647-2011

Provides basic requirements for diaphragm gas meters under tender, to ensure optimum performance, both, when purchased, and after extended service; and to satisfy the requirements of statutory authorities after due consideration is given to variations in accuracies of meter testing. Covers the working environment, materials of construction and performance required of diaphragm meters of Qmax up to 8 m3/h when tested at standard conditions (MSC) on air.