With the development of technology, the application of ultrasonic flaw Detector is more and more extensive. "Calibration of Portable Digital Ultrasonic Flaw Detector" by Zhou Jianjun mainly introduces the calibration of portable digital ultrasonic flaw Detector. The article first introduces the difference between the digital flaw Detector and the analog flaw Detector from the two aspects of adjustment method and adjustment process; it further introduces two calibration methods of the digital flaw Detector in detail: automatic calibration and non-automatic calibration. Finally, the entire calibration process of the digital ultrasonic flaw Detector is described in detail, as follows:
