ASTM E 1629 - 94. Standard Practice for Determining the Impedance of Absolute Eddy-Current Probes

American Society for Testing and Materials (ASTM). 1994, 6 pages.
This practice covers a procedure for determining the impedance of absolute eddy-current probes (bridge-type, air or ferrite core, wire wound, shielded, or unshielded) used for finding material defects in electrically conducting material. This practice is intended to establish a uniform test methodology to measure the impedance of eddy-current probes prior to receipt of these probes by the purchaser or the specifier.