KUT-500 Ultrasonic Flaw Detector


This is a portable industrial non-destructive flaw detector, which can rapidly, easily and accurately inspect, locate, evaluate and diagnose various defects (crack, inclusion and pinhole, etc.) in a work piece without destruction. It can be used both in a lab and field. The instrument can be widely used in any fields that need defect inspection and quality controlling e.g. manufacturing industry, iron & steel metallurgical industry, metalworking, chemical industry, etc., also be broadly used in the active safety inspection and service-life evaluation in such fields as aerospace, railway transportation and boiler pressure vessels, etc. It is an essential instrument for non-destructive inspection industry. 

When the ultrasonic wave propagates in a job, one can detect the defect in it by the influence on the propagation of ultrasonic wave based on the acoustic characteristic demonstrated by the defect in the material. Based on this principle, by using ultrasonic wave one can measure such defects as crack, pinhole and inclusion in such media as metal, nonmetal and composite, etc.

 Performance Features

  • Automated calibration of transducer Zero Offset and/or Velocity ;
  • Automated gain、Peak Hold and Peak Memory;
  • Automated display precise flaw location(Depth d、level p、distance s、amplitude、sz dB、ф);
  • Automated switch three staff gauge ((Depth d、level  p、distance s);
  • 100 independence setup, any criterion can be input freely, we can work in the scene without test block;
  • Big memory of 300 A graph.
  • Gate and DAC alarm;Acoustic-Optical alarm;
  • RS232/USB port,communication with pc is easy;
  • The embedded software can be online updated;
  • Li battery, continue working time up to 10 hours;
  • Display freeze;
  • Automated echo degree;
  • Angles and K-value;  
  • Lock and unlock function of system parameters;
  • Electronic clock calendar ; 
  • Two gates setting and alarm indication;
  • High-speed capture and very low noise;
  • DAC、AVG ; Solid metal housing;
  • Automated calculate the size of the flaw with w ide bottom type in AVG function.
  • AWS D1.1;
  • 6dB DAC functions;
  • Provides high contrast viewing of the waveform from bright, direct sunlight to completae darkness and easy to read from all angles;
  • Powerful pc software and reports can be export to excel;
  • Range of scanning:                               0 mm ~6000 mm 
  • Resolution for scanning:                 0.1mm (2.5mm ~100mm)         1mm (100 mm ~5999mm)
  • Range of gain:                                      0dB ~100 dB
  • D-Delay:                                                      -20µs~+3400µs
  • P-Delay:                                                                  0µs~99.99µs
  • Sound speed                    :                  1000 m/s~15000m/s
  • Temperature:                                       -10℃~50℃
  • Humidity:                                               20%~90%RH
  • Free of strong magnetic field and corrosion.
  • Power supply
  • Li battery            7.4V  4800mAh
  • Overall dimension:         240mm×150mm×50mm
  • Weight:                                        1.6kg

 Technical Parameters 


Technical Data

Range of scanning (mm)

Range of scanning (mm):0~6000

Steps: 2.5,5,10,20, 30,40,50,60,70,80,90, 100,150,200, 250, 300, 350, 400, 450,500,600,700,800,900,1000,2000,3000,4000,5000,6000

Adjusting step: 0.1mm(2.5 mm~99.9mm),1mm(100mm~6000mm)

D-delay (ms)

D-delay (ms):-20~+3400

Steps: -20,-10,0.0, 10, 20, 50,100,150,200,250,300,350,400,450,500, 600,


Adjusting steps: 0.1(-20ms~999.9ms),1(1000ms~3400ms)

P-delay (ms)


Adjusting steps: 0.01



7 fixed levels: 2260,2730,3080,3230,4700,5920,6300,12000

Adjusting steps:  1

Working mode

Single probe (receiving and sending), double probe (one for receiving and another for sending), transmission  (transmission probe)

Frequency Range (MHz)


Gain adjustment (dB)


Adjusting step: 0.0,0.1,0.5,1,2,6,12


0%~80% of screen height, step: 1%

Vertical linear error

Vertical linear error is not more than 3%

Horizontal linear error

Not more than 0.2% in the scanning range

Sensitivity Leavings

≥62 dB

Dynamic range



Three modes, i.e. forbidden wave, loss wave and auto

A-Scan display area

Full screen or local

A-Scan display freezing and de-freezing  A-Scan filling

Data save

300 A-Scan images (including setting of instrument)


Standard communication interface with PC


Measuring unit



Li battery 7.4V  4800mAh

Power adaptor

Input 100V~240V/50Hz~60Hz

Output 9VDC/1.5A

Working temperature


Working humidity


Port type


Overall dimension (mm)


Weight (kg)


 Standard Configuration 



Main unit


1.5A/9V power adapter


probe connecting cable


Carrying case


Instruction manual


Straight probe

10mm 4MHz (One)

Angle probe

8×9 60°4MHz (One)




Serial cable

1 (9 pin)

Communication software for PC

1 set