28
This is shown in right figure.
Note that the ERS is Φ2.0mm.
5.5 Curved Surface Correction
When using angle beam transducers on a
curved surface the instrument will calculate
the surface distance and depth of defect,
taking into account the internal or external
radius.
Inside
THICKNESS
Distance
Outside
Flaw Depth
THICK
: Use the THICK function to set the material’s wall thickness. This value is required for the
automatic calculation of the real depth.
Adjustment range: 0~5000 mm
O-DIAM
(Outside diameter of the test object): You will need the CSC function for tests on circular curved
surfaces, for example when testing longitudinally welded tubes. In order to make the instrument carry out
the corresponding correction of (reduced) projection distance and depth, you should enter the outside
diameter of your test object in this function.
Adjustment range: 0~5000 mm
CSC
: If you plan to carry out the flaw position calculation for the curved surface workpieces, the CSC
function should be turned on. Otherwise turn off the CSC function.
5.6 AWS D1.1 Weld Rating Feature
This feature allows analysis of welds according to AWS specification D1.1 and provides a D1.1 rating.
The AWS D1.1 feature utilizes four AWS-specified variables including:
INDICAT – Gain (in dB) required to position an A-Scan echo’s peak (from the measured reflector) at
50% of full screen height (FSH).
REFRNCE – Gain (in dB) required to position an A-Scan echo’s peak (from the reference reflector)
at 50% of FSH.
ATTEN – Determined by subtracting 1 inch from the sound path distance to the discontinuity, using
the equation: ATTEN=(SA-1)×2. This compensates for sound loss from material attenuation along
the sound path to the discontinuity.
RATING – Calculated based on the AWS formula: .RATING=INDICAT-REFRNCE-ATTEN
Before activating the AWS D1.1 weld rating feature, be sure that all instrument settings are properly
adjusted for the specific measurement application. Then access the AWS D1.1 submenu and follow this
procedure:
