ISO 11631:1998

Apply For Services

ISO 11631:1998 is an international standard that focuses on measurement of fluid flow and methods of specifying flowmeter performance. It outlines how to describe the performance of any flowmeter, regardless of whether it's used in closed conduits or open channels. The standard also addresses how flowmeters can be classified based on their traceability groups and how manufacturers should express statements regarding traceability, quality assurance, and conditions of