Title :
Design considerations for the pole shoe of a magnetometer
Author :
Larsen, R. Mikael ; Post, Rasmus ; Ritchie, Andrew Ewen
Author_Institution :
Inst. of Mech. Eng., Aalborg Univ., Denmark
fDate :
8/1/1998 12:00:00 AM
Abstract :
A test system for small cylindrical samples of magnetic material is designed, The magnetic flux density is measured using a small secondary winding and the magnetic field strength by a set of potential coils. The initial design with cylindrical pole shoes caused errors in the measurement of the field strength. Calculations of the field distribution in the system have shown where the problem arises. It is shown that changing the shape of the pole shoe from cylindrical to a truncated shape improves the measuring accuracy of the potential coils. This is verified by measurements performed on the test system
Keywords :
coils; finite element analysis; fluxmeters; magnetic field measurement; magnetic flux; magnetometers; sample holders; 2D-FEM; conical shape; cylindrical pole shoes; design considerations; fluxmeter; magnetic field strength; magnetic flux density; magnetometer pole shoe; measuring accuracy; set of potential coils; small cylindrical sample test system; small secondary winding; truncated shape; Coils; Density measurement; Footwear; Magnetic field measurement; Magnetic flux density; Magnetic materials; Magnetometers; Materials testing; Shape measurement; System testing;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
