Coil arrangement a magnetically induced impedance measuring device having a partially compensated magnetic excitation field in a detection coil

摘要

Coil layout for the magnetic induction impedance measurement equipment (215), as generated the magnetic excited field, in the target responding to making electric current cause, the excited coil which is formed (208) with, shimingukoiru which generates the shimming field (364) with, the magnetic excited field the target (106) in as detected the magnetic response field which is generated the detection coil which is formed (210 - 214) with it possesses. In order to raise the precision of decision of parameter of the target, it is sum of the excited field and the shimming field, the detection coil (210 - 214) as for value of magnetic field strength of the net magnetic excited field in, it is inside the size range of average of magnetic field strength of the magnetic response field approximately, the detection coil (210 - 214) in.