This standard specifies the overall length (face-to-face distance) of flange-mounted electromagnetic flowmeters.
GB/T 20729-2006 Referenced Document
GB/T 17611-1998 Measurement of fluid flow in closed conduits--Vocabulary and symbols
GB/T 18659-2002 Measurement of fluid flow in closed conduits--Methods of evaluating the performance of electromagnetic flow-meters for liquids
GB/T 18660-2002 Measurement of conductive liquid flow in closed conduits--Method using electromagnetic flowmeters
GB/T 20729-2006 history
2006GB/T 20729-2006 Measurement of conductive liquid flow in closed conduits Flanged electromagnetic flowmeters Overall length
GB/T 20729-2006 Measurement of conductive liquid flow in closed conduits Flanged electromagnetic flowmeters Overall length was changed to GB/T 18659-2023 Guidelines for the use of electromagnetic flowmeters for measuring fluid flow in closed pipes.