DIN EN 583-4:2002-12

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Tandem examination
   4.1 General
   4.2 Time base adjustment
   4.3 Setting of sensitivity
   4.4 Determination of examination zones
   4.5 DGS-diagram for tandem examination
   4.6 Corrections of sensitivity
   4.7 Object with concentric surfaces
5 LLT-examination
   5.1 General
   5.2 Time base adjustment and determination of
       discontinuity depth
   5.3 Setting of sensitivity
   5.4 Determination of examination depth
   5.5 DGS-diagrams for LLT-examination
   5.6 Correction of sensitivity
Annex A (informative) - Nomograms for determination of
                         tandem distances for convex (Figure A.1) and
                         concave (Figure A.2) scanning surface
Annex ZA (informative) - Clauses of this European Standard
                         addressing requirements or other provisions of
                         EU Directives

This standard is included in DIN Handbook 56. Gives the principles for tandem- and LLT-examination for the detection of discontinuities perpendicular to the surface.