1. General
Today's electromagnetic flowmeters operate on the Faraday principle: if a conductive liquid, moving at speed V inside a tube (whose diameter D is electrically insulated), passes perpendicularly through a magnetic field B, a voltage U is induced in the liquid. This voltage is picked up by two electrodes, which measure :
The converter collects the voltage at the electrodes and calculates the flow-volume by multiplying the flow velocity by the cross-sectional area of the measuring tube.
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General
Electromagnetic flowmeter technology
Bibliography
Standards and norms
French Standards Association (AFNOR)
- Mesure de débit des fluides dans les conduites fermées. Vocabulaire et symboles (X10-100). « La présente Norme internationale définit les termes préconisés en matière de débit des fluides dans les conduites fermées et donne leurs symboles correspondants. Il a été jugé nécessaire d'exclure les termes des catégories suivantes : a) ceux qui sont évidents par eux-mêmes ; b) ceux...
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ABB Instrumentation
http://www.abb.com/instrumentation
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