Measuring and testing – Volume or rate of flow – By measuring electrical or magnetic properties
Patent
1995-05-15
1996-08-06
Chilcot, Richard
Measuring and testing
Volume or rate of flow
By measuring electrical or magnetic properties
7386113, G01F 158
Patent
active
055423019
ABSTRACT:
Reduced eddy current flowmeters and the methods of fabrication are disclosed. A pedestal is fixed inside an outer casing of the flowmeter and a core is fixed on the pedestal. In one embodiment, the outer casing to which the core is fixed is rotated by a power roller and slits are cut into the core by a laser beam apparatus. The cutting of such slits reduces the eddy current in such flowmeters. Depending on the movement of the laser apparatus with respect to the rotation of the outer casing, a spiral slit or a circular slit may be formed. Other patterns of slits may also be cut. A lathe may be used in place of the laser apparatus. The flowmeter includes an exciting coil, a measuring pipe and other necessary elements which are fixed to the outer casing after the slits are cut in the core.
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Artis Jewel V.
Chilcot Richard
Kabushiki Kaisha Toshiba
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