AXF magnetic flowmeter - Istec Corp.

In cases where fluids contain air bubbles, piping mustbe designed to prevent them from accumulating in themeasurement pipe of a flowtube.If a valve exists near the flowtube, try to mount theflowtube on the valve’s upstream side in order toprevent a possible reduction of pressure inside thepipe, thereby avoiding the possibility of air bubbles.(Correct)(Incorrect)Avoiding Air Bubbles(Correct)Valve(Incorrect)F10.EPS• Mounting OrientationIf electrodes are perpendicular to the ground, airbubbles near the top or precipitates at the bottom maycause measurement errors.Ensure that the terminal box of a remote flowtube andconverter of an integral flowmeter are mounted abovethe piping to prevent water from entering them.(Correct)(Incorrect)Air bubbleElectrode Electrode PrecipitateMounting Orientation(Incorrect)Water canseep into theterminal box.F11.EPS■ INNER DIAMETER OF GROUNDINGRINGSizeLiningPFA/PolyurethaneRubber/NaturalSoft Rubber/EPDM RubberAXF StandardCeramics22Unit: mm (in.)ReplacementModel for earlierADMAG orADMAG AEPFA/PolyurethaneRubber2.5 (0.1) 15 (0.59)* 1 — 15 (0.59)5 (0.2) 15 (0.59)* 1 — 15 (0.59)10 (0.4) 15 (0.59)* 1 — 15 (0.59)15 (0.5) 15 (0.59) 15 (0.59) 15 (0.59)25 (1.0) 28 (1.10) 27 (1.06) 27 (1.06)32 (1.25) 34 (1.34) — —40 (1.5) 41 (1.61) 40 (1.57) 40 (1.57)50 (2.0) 53 (2.09) 52 (2.05) 52 (2.05)65 (2.5) 66 (2.60) — —80 (3.0) 77 (3.03) 81 (3.19) 81 (3.19)100 (4.0) 102 (4.02) 98 (3.86) 98 (3.86)125 (5.0) 128 (5.04) — —150 (6.0) 146.1 (5.75) 144 (5.67) 140.7 (5.6)200 (8.0) 193.6 (7.62) 192 (7.56) 188.9 (7.5)250 (10)300 (12)Wafer: 243.7(9.60)Flange: 243(9.57)Wafer: 294.7(11.60)Flange: 291.3(11.47)— 243 (9.57)— —350 (14)400 (16)Flange: 323.4(12.73)Flange: 373.5(14.70)— —— —*1: The I.D. of the process connection code: DD4, DJ1,DJ2 is 12 mm (0.47 in.)Note: Please ensure that the I.D. of the gasket does notprotrude into the I.D. of the grounding ring.(This dimension is also applied to when nogrounding ring is used).If the I.D of the gasket is too large, however, fluidleakage may result.T25.EPSAll Rights Reserved. Copyright © 2003, Yokogawa Electric Corporation GS 01E20D01-01E May 10,2006-00