An electromagnetic flow meter and method of operating the same. There is provided a flow measurement duct, a magnetic circuit including pole pieces for generating a magnetic field in fluid flowing in a direction in the duct across the direction of flow, and an electrical circuit including at least one...http://www.google.fr/patents/US6237424?utm_source=gb-gplus-shareBrevet US6237424 - Electromagnetic flowmeter having low power consumption
Electromagnetic flowmeter having low power consumption