A magnetic flowmeter assembly is provided having a tubular body, having opposing open ends and defining a fluid flow path therebetween along a longitudinal axis (Ax). A pair of coil assemblies is coupled to the tubular body in an intermediate region thereof supported by an adjustable brace. A pair of measuring electrodes is attached to the tubular body in electrical communication with the fluid with the flow path and aligned along an axis (Ay) orthogonal to the longitudinal axis (Ax) and orthogonal to the axis (Az). Auxiliary electrodes are disposed upstream and downstream of the pair of measuring electrodes.