| 摘要 |
PURPOSE:To improve the detection sensitivity, and to realize the energy saving by providing a groove for containing a measuring signal line of an electrode on one of auxiliary magnetic poles, along the outside peripheral surface of a measuring pipe. CONSTITUTION:An electrode of the tip of electrode terminals 2, 2' for a measurement is provided on a part of a pipe side being symmetrical to the center axis on the diameter axis of a measuring pipe 1 in which a fluid flows, and contacts the fluid. Also, exciting magnetic poles 4, 4' are provided on a position being symmetrical to the diameter axis on a line being orthogonal to the diameter axis and the center axis, and a pair of auxiliary magnetic poles 5, 5' are provided on a position running along the outside peripheral surface of the measuring pipe 1. Also, on one magnetic pole 5, a groove 5a for wiring for making a signal line 7 pass through along the periphery is provided on the surface which contacts the measuring pipe 1. The signal line 7 is divided into two centering around the Y-Y axis of the measuring pipe 1 from two terminals 2, 2', and taken out to the outside through the groove 5a. In this way, an air-gap between the measuring pipe 1 and the auxiliary electrode 5 becomes almost zero, the exciting current is reduced, and by energy saving, a flowmeter having an excellent detection sensitivity can be obtained.
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