910-269-EN, Rev. B, June 2011
222 Chapter 11
• Back wall
• Side-drilled hole (SDH)
• For angle beam probes, the available reflectors are:
• K1-IIW block arc
•K2-DSC block
• Side-drilled hole (SDH)
• Flat-bottom hole (FBH)
Reflector Dia.
Used for angle beam inspections only. This allows you to define the diameter of
the flat-bottom hole (FBH) or side-drilled hole (SDH) used as a reference-reflector.
This size is required to properly position the DGS/AVG curve.
DeltaVk
Used for angle beam inspections with reference-reflector K1-IIW or K2-DSC
blocks only. This correction value for the angle beam transducer can be found
listed on the DGS/AVG diagram for the selected transducer.
DeltaVt
Transfer correction value, used to compensate in amplitude differences as a result
of coupling variation (surface condition) from the calibration block to the test
piece. EN 583-2:2001 provides methods for calculating transfer correction.
Reg. Level
The height of the main DGS/AVG curve. The curve represents the amplitude from
a flat-bottom hole with a diameter of the registration level at different depths.
This is usually equal to the critical flaw size for the application.
Warning Level
This is the position of the secondary DGS/AVG “warning” curve compared to the
position of the main DGS/AVG curve. If this value is set to zero, the warning
curve is turned off.
AcvSpecimen
This is the attenuation value in dB/m for the test piece (specimen). In some cases,
it is necessary to calculate the relative attenuation within the test piece and enter
the value here.
AcvCalBlock
This is the attenuation value in dB/m for the calibration block. In some cases, it is
necessary to calculate the relative attenuation within the calibration block and
enter the value here.
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