Patent ID: 8082803

Claim:
An electromagnetic flow meter configured to measure a flow rate of a measurement target fluid, comprising: a measurement pipe having a hollow cylindrical shape and allowing the measurement target fluid to flow inside; flanges provided on both ends of the measurement pipe, respectively; and a lining portion, wherein each of the flanges includes a flatly-formed front surface facing to a member to be connected and a convex portion formed on the front surface, the convex portion extending in a circumferential direction of the measurement pipe, the convex portion has a curved surface whose cross section is in an arc shape, the convex portion has widths that do not increase toward a top thereof, the lining portion is formed so as to cover an inner surface of the measurement pipe, the front surfaces and the convex portions of the respective flanges, and a part of the lining portion, the part covering the front surface of the flange, is flat and parallel to the front surface.