DR AS 4647
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Diaphragm gas meters
02-22-2018
02-17-2010
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.
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