Describes the principle and main design features of industrial electromagnetic flowmeters for the measurement of flow-rate of a conductive liquid in a closed conduit running full. Covers their operation, installation, calibration and performance. Does not specify safety requirements for hazardous environmental usage of the meter; does not apply to the measurement of magnetically permeable slurries, liquid metals nor usage in medical applications. Covers flowmeter types in both a.c. and pulsed d.c. versions. Coverage includes definitions, equipment marking, symbols and units, and uncertainty analysis. Also includes annexes and diagrams.

ISO 20456:2017

SAC GB/T 18660 : 2002 - Identical

DS EN ISO 6817 : 1996 - Identical

BS 5792-1(1993) : 1993 AMD 9333 - Identical

PN EN ISO 6817 : 1996 - Identical

NBR ISO 6817 : 1999 - Identical

BS 5792-1:1993 - Identical

KS B 5260:2009 - Identical

SN EN ISO 6817:1996 - Identical

NEN EN ISO 6817:1995 - Identical

BS EN ISO 6817:1997 - Identical

NBR ISO 6817:1999 - Identical

JIS B 7554:1997 - Equivalent

DIN EN ISO 6817 (1995-11) - Identical

ONORM EN ISO 6817:1996 - Identical

GB/T 18660-2002 - Identical

NBN EN ISO 6817:1996 - Identical

I.S. EN ISO 6817:1996 - Identical

NBN EN 29104:1993 - Identical

UNI EN ISO 6817:1997 - Identical

NF EN ISO 6817:1995 - Identical

NS EN ISO 6817 Ed. 1 (1995) - Identical

PN EN ISO 6817:1996 - Identical

SS EN ISO 6817 Ed. 1 (1995) - Identical

UNE EN ISO 6817:1996 - Identical