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About This Item
Full Description
ISO 20456:2017 applies to industrial electromagnetic flowmeters used for the measurement of flowrate of a conductive liquid in a closed conduit running full. It covers flowmeter types utilizing both alternating current (AC) and pulsed direct current (DC) circuits to drive the field coils and meters running from a mains power supply and those operating from batteries or other sources of power.
ISO 20456:2017 is not applicable to insertion-type flowmeters or electromagnetic flowmeters designed to work in open channels or pipes running partially full, nor does it apply to the measurement of magnetically permeable slurries or liquid metal applications.
ISO 20456:2017 does not specify safety requirements in relation to hazardous environmental usage of the flowmeter.
Document History
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ISO 20456:2017
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Measurement of fluid flow in closed conduits - Guidance for the use of electromagnetic flowmeters for conductive liquids- Most Recent
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ISO 13359:1998
Measurement of conductive liquid flow in closed conduits - Flanged electromagnetic flowmeters - Overall length- Historical Version
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ISO 6817:1992
Measurement of conductive liquid flow in closed conduits - Method using electromagnetic flowmeters- Historical Version
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ISO 9104:1991
Measurement of fluid flow in closed conduits - Methods of evaluating the performance of electromagnetic flow-meters for liquids- Historical Version