| 摘要 |
PURPOSE: An eddy current type electric flow meter is provided to measure the exact flow rate without a temperature compensation circuit by removing an error caused by an electrode. CONSTITUTION: An eddy current type electric flow meter includes a fluid pipe in which fluid flows and coils generating an electromotive force, and a bobbin wounded on the fluid pipe for insulating, wherein the fluid pipe is made of non-magnetic material such as stainless steel, the coils are formed with a first coil and a couple of second coils, which the thickness of the coils is determined according to the thickness of the fluid pipe. The magnetized current by the first coil generates an eddy current within the fluid and the eddy current organizes the voltage in proportion to the velocity of a moving fluid to the second coil installed at right angles with the flow direction, so that the velocity of a moving fluid is measured by measuring the changed amount of the voltage.
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