Detector for an electromagnetic flowmeter

Details Detector for an electromagnetic flowmeter Detector for an electromagnetic flowmeter

1988-04-11

1989-03-07

Orsino, Joseph A.

Measuring and testing

Volume or rate of flow

By measuring electrical or magnetic properties

G01F 158

Patent

active

048095591

ABSTRACT:
A detector for an electromagnetic flowmeter provided with a pair of detecting electrodes disposed opposite to each other on the inner surface of a piping, through which fluid, whose flow rate is to be measured, flows, and a magnet forming a magnetic field in the direction perpendicular both to the axis of the piping and to the line connecting the detecting electrodes, in which the magnet has a pair of magnetic poles, which are so formed that the magnetic flux density is greatest in the neighborhood of the position apart from the middle point of the straight line segment connecting the detecting electrodes by 0.3 d in the direction towards each of the detecting electrodes, d being the inner diameter of the piping.

REFERENCES:
patent: 3373608 (1968-03-01), Ketelsen
patent: 4236411 (1980-12-01), Ketelsen
M. K. Bevir, "Long Induced Voltage electromagnetic flowmeters . . . " Journ. Mech. and App. Math, vol. XXIV, 1971, pp. 347-372.
D. C. Baker, "Principles and Practice of flow measurement", lecture 13a, May 1977.
Japanese Industrial Standard, (B 7554-1984), 1984.

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