| 摘要 |
PURPOSE: A flow rate measuring device in which a non-magnetic material is applied is provided to measure a flow rate by detecting the numbers of the rotation of an impeller rotary shaft rotating between a first sensing coil and a second sensing coil, thereby minimizing measurement errors due to the stable rotation. CONSTITUTION: A flow rate measuring device in which a non-magnetic material is applied comprises a battery(13), a display(14), a first sensing coil(21), and a second sensing coil(22). The battery and displays are installed in the inside of a coil housing and the first and second sensing coils are perpendicularly formed in the lower part of the coil housing at a predetermined interval. A rotary shaft is arranged between the first and second sensing coils. A non-magnetic material is joined to the outer circumference of the rotary shaft. An impeller consisting of a plurality of rotary vanes which are joined in all directions is installed in the lower part of the rotary shaft, thereby being rotated by a flow of fluid.
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