FIELD: instrument making.
SUBSTANCE: invention describes magnetic inductive flow meter (1) with at least one measuring tube (2), at least one having magnetic circuit device (3a, 3b) for implementation of magnetic circuit and at least with two electrodes (4) for recording of measured voltage, wherein measuring tube (2) has inlet section (2a), adjacent to inlet section (2a) of measuring section (2b) and adjacent to measuring section (2b) of outlet section (2c). At that, cross section (AM) of flow measurement section (2b) is smaller than as facing to inlet hole cross section (AE) of flow inlet section (2A) and less facing outlet cross section (AA) flow outlet section (2 c), and electrodes (4) are located on opposite electrode areas (5a, 5b) or inside them on measuring section (2b) of measuring tube (2). Distance (8 m) between electrode sections (5a, 5b) on measuring section (2b) of measuring tube (2) is more than inner diameter (Sc) facing to inlet hole cross section (AE) of flow inlet section (2a) of measuring tube (2). Measuring tube (2) is made of metal tube made of non-magnetic material, wherein tapered section of inlet section (2A), expanding section outlet section (2c) and (2b) measurements are made without chipping by acting outside on metal tube forces.
EFFECT: technical result achieved at implementation of invention consists in simplification of manufacturing metering tube while providing high sensitivity and accuracy of flow meter.
10 cl, 4 dwg
