Page 324 - CITS - Welder - Trade Practical

WELDER - CITS

transducer type requirements are critical. This type of calibration often considers the dimensions measured
by the flaw detector, including the distance and thickness of the material, using precisely timed echoes. The
ultrasonic flaw detector’s accuracy depends on the careful measures taken during this calibration exercise,
and errors might occur in the readings if the calibration is not carefully and correctly done. Thankfully, the
calibration process is pretty straightforward and with the possibility of storing different material calibrations in
the memory of the device.
Reference calibration

- Using similar materials or test blocks as reference standards to set up a testing operation is often referred to
as reference calibration. However, for ultrasonic flaw detectors, the signal’s amplitude received from standard
references is usually the benchmark utilized for this type of calibration. User-defined procedures often give the
details required for reference calibration used for specific tests.

Wear protective clothing.

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CITS : CG & M - Welder - Exercise 93