| 摘要 |
PROBLEM TO BE SOLVED: To provide an electromagnetic flowmeter short in the time required for assembling with excellent stability of a characteristic. SOLUTION: In this flowmeter, a magnetic pole 4a is constituted of two components of a core 41a having a core main body part 411 wound with an excitation coil, and a positioning protrusion part 412 fitted into a through hole 421 formed in a pedestal 42a, and the pedestal 42a for contacting with a tube wall of a measuring tube to stabilize the magnetic pole 4a and to optimize a magnetic field distribution, and having the through hole 421 fitted with the positioning protrusion part 412 of the core 41a. The magnetic pole 4a is integrated by welding both components in a welding part 45 under the condition where the positioning protrusion part 412 is fitted into the through hole 421, so as to constitute the magnetic pole 4a. COPYRIGHT: (C)2005,JPO&NCIPI
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