Version 1.0, August 31, 2001, Copyright, Hugh Jack 1993-2001
· These sensors work for all metals (conducting materials).
· These use an oscillating magnetic field.
· The coils can be shielded to make them more selective to the front of the coils. Unshielded coils have larger fields and sensitivity to the sides.
· Clearly ferrous targets will work well, but other metals can be used also.