... RS232/USB port 3.Li battery power High-Tech Digital Ultrasonic Flaw Detector Introduction: The digital ultrasonic flaw detector is the portable ... widely used in any fields that need defect inspection and quality controlling e.g. manufacturing industry, iron & steel metallurgical industry, ... d,level p,distance s,amplitude,sz dB,)4.Automated switch three staff gauge ((Depth d,level p,distance s) ...