This standard specifies the requirements of eddy current instruments for non-destructive measurement of thickness of a non-conductive or less conductive coating on a non-magnetic base metal.
Note—The conductivity ratio of coating and base metal shall be greater than 4.
IS 12554 Pt.1-1988 history
1989IS 12554 Pt.1-1988 Specification for non-destructive coating thickness testing instruments Part 1 Eddy current instruments