COIL ARRANGEMENT FOR A MAGNETIC INDUCTION IMPEDANCE MEASUREMENT APPARATUS COMPRISING A PARTLY COMPENSATED MAGNETIC EXCITATION FIELD IN THE DETECTION COIL

摘要

Coil (215) includes that excitation coil (208) is configured to generate the object of excitation field for magnetic induction impedance measurement device, search coil (210-214) is configured for the magnetic excitation field that detection magnetic reaction field makes a response and generates and induces electric current, in object (106). In the precision for the determination for enhancing the parameter of object, coil (210-214) includes field strength magnetic reaction field coil (210-214) when detecting in the magnitude range of average value to the net magnetic excitation field of value field strength when detecting.