.~ With means to create magnetic field to test material {5}
233
.~.~ With phase sensitive element
DEFINITION
Classification: 324/233
With phase sensitive element:
(under subclass 228) Subject matter wherein the apparatus to sense and indicate the sensing of the magnetic field modified by the material tested includes an element which compares the electrical phase of the signal as received by the apparatus with the phase of the magnetic field used in the test, the difference in phase being used by the apparatus to show some
characteristic of the tested material.
(1) Note. Here are mostly eddy current tests which do not fall out in the preceding subclasses. Eddy current tests not classified here will be found in the subclasses following when no phase detection is claimed.
