Title: Fluid flow meters

Abstract: An electromagnetic flowmeter comprises an iron tube surrounding a non-magnetic electrically insulating tube through which the fluid flows. Windings formed by printed circuit conductors are located on the inner surface of the iron tube and produce a main magnetic field in one direction in the electrode plane and subsidiary magnetic fields in the opposite direction upstream and downstream of the electrode plane.

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Inventors: Hemp, John (Marston, EN)
Wyatt, Derek Gerald (Oxford, EN)

Application Number: 690784
Filing Date: 1976-05-27
Publication_date: 1977-09-27
Assignee: National Research Development Corporation (London, EN)
Primary Class(es): 73/861.12
Other Classes:
US Patent Ref:

3373608	Mar, 1968	Ketelsen	73/194.
3566687	Mar, 1971	Mittelmann	73/194.
3589186	Jun, 1971	Bourg	73/194.
3924466	Dec, 1975	Medlar	73/194.

Other Refs:
Primary Examiner: Ruehl, Charles A.
Assistant Examiner:
Attorney: Cushman, Darby & Cushman