Waygate Technologies Krautkramer USM Go, Operating Manual

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Rating of welds (function group AWS D1.1) 5 Operation
USM Go Rev. 10 (06/2021) 5-43
Note
Make sure that all instrument options for the
specific test are calibrated before starting the
rating according to AWS D1.1.
Remember to peak an echo with an amplitude between
45 % and 55 % screen height. A rating is not possible
with other amplitudes.
– Apply couplant and couple the probe to the reference
standard. Maximize the echo from the 1.5 mm side-
drilled hole.
– Select the function A-START and adjust the gate A
on the reference echo.
– Vary the gain so that the reference echo is indicated
at 50 % screen height.
– Switch to the function group AWS D1.1 .
– Select the function B REFERENCE and confirm the
selection to store the reference gain.
– Couple the probe to the test object to evaluate a flaw
echo.
– Select the function A-START and adjust the gate A
on the flaw echo.
– Vary the gain so that the flaw echo is indicated at
50 % screen height.
– Switch to the function group AWS D1.1 .
– Store the current gain by means of the function
A INDICATION . The current gain is stored.