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CHAPTER 1 A BRIEF INTRODUCTION TO YUT-28SERIES...................................................................1
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1.4.1 Power Supply................................................................................................................................................. 2
1.4.2 Probe Connection........................................................................................................................................... 3
1.4.3 Switching On and Off the Instrument............................................................................................................ 3
1.4.4 Restore the Initial Parameters of the Instrument............................................................................................3
1.5.1 Functional Keys ............................................................................................................................................3
1.5.2 Main Menu ................................................................................................................................................... 4
CHAPTER 2 FUNCTIONS, FEATURES, AND PARAMETERS OF THE INSTRUMENT.....................4
........................................................................................................................................ 6
CHAPTER 3 DETAILED OPERATION INSTRUCTIONS......................................................................... 6
3.1.1 Sound Path..................................................................................................................................................... 6
3.1.2 Sound Velocity............................................................................................................................................... 7
3.1.3 Displacement..................................................................................................................................................7
3.1.4 Gain................................................................................................................................................................ 7
3.1.5 Compensation.................................................................................................................................................8
3.1.6 Scale............................................................................................................................................................... 8
3.1.7 Reject..............................................................................................................................................................8
3.1.8 Wave Height Readings................................................................................................................................... 8
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3.2.1 Waveform Filling........................................................................................................................................... 9
3.2.2 Color Scheme................................................................................................................................................. 9
3.2.3 Language........................................................................................................................................................ 9
3.2.4 Alarming.........................................................................................................................................................9
3.2.5 Automatic Wave Height................................................................................................................................. 9
3.2.6 Date.............................................................................................................................................................. 10
3.2.7 Time..............................................................................................................................................................10
3.2.8 Parameter Resetting......................................................................................................................................10
3.3.1 Pulse energy................................................................................................................................................. 10
3.3.2 Pulse width................................................................................................................................................... 11
3.3.3 Damping....................................................................................................................................................... 11
3.3.4 Broadband.................................................................................................................................................... 11
3.3.5 Repeating frequency.....................................................................................................................................11
3.4
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YUSHI INSTRUMENTS
Contents
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Table of Contents
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Summary of Contents for YUSHI YUT-28 Series
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Page 1: Table Of Contents
YUSHI INSTRUMENTS Contents CHAPTER 1 A BRIEF INTRODUCTION TO YUT-28SERIES..............1 1.1 N ..............1 AMES OF THE AJOR OMPONENTS OF THE NSTRUMENT 1.2 K ..............................1 EYPAD 1.3 D ............................2 ISPLAY CREEN 1.4 B ....................2 ASIC PERATION OF THE NSTRUMENT 1.4.1 Power Supply..............................2 1.4.2 Probe Connection............................ - Page 2 YUSHI INSTRUMENTS 3.4.1 Gate A menu..............................12 3.4.1.1 Starting of gate A............................12 3.4.1.2 Width of gate A............................12 3.4.1.3 Height of gate A............................12 3.4.1.4 Mode of gate A............................13 3.4.1.5 Display choice............................13 3.4.2 Gate B menu ...............................13 3.4.2.1 Starting of gate B............................13 3.4.2.2 Width of gate B............................
- Page 3 YUSHI INSTRUMENTS CHAPTER 4 APPLICATION OF TESTING..................... 22 4.1 C ..............22 ALIBRATION ETHOD AND TEPS OF THE NSTRUMENT 4.2 Z ................22 ALIBRATION OF THE TRAIGHT ROBE 4.2.1 Calibration Procedures..........................23 4.2.2 Operation Steps............................23 4.2.3 Measurement of the Sound Velocity of the Material..................24 4.3 C...
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Page 4: Chapter 1 A Brief Introduction To Yut-28Series
YUSHI INSTRUMENTS Chapter 1 A Brief Introduction to YUT-28series 1.1 Names of the Major Components of the Instrument The names of the major components of the instrument are shown in Figure 1-1. 1. TFT True Color Display 2. Touch Keypad 3. -
Page 5: Display Screen
YUSHI INSTRUMENTS 1.3 Display Screen Press to power the instrument on (the probe is not connected), and the screen is shown as Figure 1-3. Figure 1-3 1.4 Basic Operation of the Instrument During the operation of the instrument, directly press the corresponding menu key, and the relevant menu will be displayed on the screen. -
Page 6: Probe Connection
YUSHI INSTRUMENTS 1.4.2 Probe Connection When you use YUT-28series, we recommend using our stock probe connecting cable with the appropriate probes. Various types of our standard stock probes can be used directly. The probe should be plugged into the socket upside the instrument. When it is the mode of single probe, the probe cable should be connected to T/R socket;... -
Page 7: Main Menu
YUSHI INSTRUMENTS 1.5.2Main Menu Main Submenu Functions Menu Gain, Compensation, Sound Velocity, Sound Path, Displacement, Basic Parameters Basic Scale, Reject, Wave Height Readings in Detection Waveform Filling, Color Scheme, Language, Alarm, Automatic Basic Functions of Setting Wave Height, Date, Time, Parameter Resetting,... -
Page 8: Features Of The Instrument
YUSHI INSTRUMENTS 2 independent measurement gates, monitoring the echo amplitude and the sound path distance When using transverse wave to detect flaws, the depths of the second and third waves are automatically calculated according to the slab thickness. Perfect DAC/AVG curve functions, the curves change along with the changes of the gain, sound path, and displacement. -
Page 9: Specifications
YUSHI INSTRUMENTS Wave signal filter can be changed between 2 levels: 1-4MHz/0.5-15MHz. Each individual advantage of narrowband and broadband filter can be achieved. Repeating frequency can be changed freely to avoid unreal signal. Two operation interfaces are available, i.e., Chinese and English Easy to use, the user can master the operation method very fast. -
Page 10: Sound Velocity
YUSHI INSTRUMENTS press (left decrease) or (right increase) to adjust the values. On the sound path submenu, press OK to adjust the steps. The steps are 1, 10, 25, and 100. 3.1.2 Sound Velocity On the sound path submenu, you can adjust the velocity of the ultrasonic wave transmitted in the detected work piece. -
Page 11: Compensation
YUSHI INSTRUMENTS 3.1.5 Compensation Owing to the different degrees of roughness of surface of the detected object and the test block calibrating the instrument, in the practical detection, you need to increase (or decrease) the sensitivity of instrument to reduce the influence caused by the surface of the detected object. The range of adjustment is from -40 to +40 dB. -
Page 12: Setting Menu
YUSHI INSTRUMENTS this function, you should use Gate A to catch the echoes. Otherwise, it will result in error in reading. In the windows, the dB difference of the quantitative line relative to DAC curve will be shown. If there is no DAC curve, then it displays SL ----. -
Page 13: Date
YUSHI INSTRUMENTS screen. The default status is 80%. Select the setting menu, press (up) or (down) to select the automatic wave height submenu. Then press (left) or (right) to adjust the values. The maximum value is 80%, while the minimum is 20%. -
Page 14: Pulse Width
YUSHI INSTRUMENTS 3.3.2 Pulse width Through adjusting the value, the sensitivity and resolution of the echo can be changed. This function aims at matching different probes and getting the highest sensitivity. On the squared ultrasonic wave menu, press (up) or... -
Page 15: Gate Menu
YUSHI INSTRUMENTS 3.4 Gate Menu The most outstanding feature of the digital flaw detector is the ability to display all the analogue values of echoes on the screen by digital signals. When the instrument is required to compare and compute a signal wave, "human" is needed to tell it which echo to trace. We appoint "gate" for locking the echo to be measured. -
Page 16: Mode Of Gate A
YUSHI INSTRUMENTS 3.4.1.4 Mode of Gate A Select Gate A menu, press (up) or (down) to select the mode of Gate A submenu, then press (left) or (right) to adjust the values. Turning off the gate, i.e., turning off the alarming and measurement functions. -
Page 17: Width Of Gate B
YUSHI INSTRUMENTS 3.4.2.2 Width of Gate B Select Gate B menu, press (up) or (down) to select the width of Gate B submenu, then press (left) or (right) to adjust the values. Note: the width of Gate B is the backward position of Gate B. Minimum adjustment range is 2mm, while the maximum one is same as the sound path value. -
Page 18: Probe Menu
YUSHI INSTRUMENTS 3.5 Probe Menu Press to select the probe menu. 3.5.1 Dual Probes You can use this function to set the probe types. Select the probe menu, press (up) or (down) to select the dual probes submenu. Then press (left) or (right) to adjust the values. -
Page 19: Work Piece Thickness
YUSHI INSTRUMENTS Select the probe menu, press （up) or (down) to select the front distance submenu. Then press (left) or (right) to adjust the values. Note: the adjustment range: 0-999.9mm. When you adjust the values, you can press Ok to set the steps, which are divided into 0.1, 0.5, and 1. -
Page 20: Dac Menu
YUSHI INSTRUMENTS 3.6 DAC Menu Owing to the diffusion and attenuation of the sound velocity, the echo heights of the reflectors of the same size depend on the distance between the reflector and the probe. The distance amplitude curve is made according to different reference reflectors which are the same size but different in their depths, and a curve diagram mode displays the influences and the changes. -
Page 21: Dac Curve Mode
YUSHI INSTRUMENTS 3.6.4 DAC Curve Mode YUT2820 can make DAC curve. Customers can choose straight line or curve lint to connect and make DAC curve. This menu can adjust the curve mode. Select the DAC menu, press (up) or (down) to select the Curve mode submenu. -
Page 22: Gate Astart
YUSHI INSTRUMENTS 3.7.2 Gate A start The instruction is the same with that in DAC menu. See 3.6.2 for details. 3.7.3 Sensitivity When making AVG curve with “Bottom” mode, the dB value that makes the flaw echo to reach a certain height of the full screen is sensitivity. -
Page 23: Call-Out
YUSHI INSTRUMENTS setting the memory, if there is a before the data set memory number, that means the data set is occupied. If you save the data, the original data will be covered. When you adjust the memory number, you can press Ok to set the steps, which are divided into 1, 10, and 100. -
Page 24: Freezing
YUSHI INSTRUMENTS automatic gain. The instrument will repeatedly compute the echo inside the gate automatically and adjust the gain automatically until the amplitude height of the largest echo is set to 80% of the screen height, as shown in Figure 3-2. -
Page 25: Full Screen
YUSHI INSTRUMENTS First use the gate to lock the echo needed, press to activate the wave peak memory status. When you move the probe, if there emerges a dynamic echo which is higher than the previous static wave displayed, the instrument can catch the new echo as the current highest echo displayed. Press again to exit the wave peak memory. -
Page 26: Calibration Procedures
YUSHI INSTRUMENTS 4.2.1 Calibration Procedures In the parameter menu, set the sound velocity of the material given. If the sound velocity of the material is unknown, you should measure the sound velocity value of the material first. (Measurement of the sound velocity of the material) In the parameter menu, set the sound path. -
Page 27: Measurement Of The Sound Velocity Of The Material
YUSHI INSTRUMENTS Figure 4-2 4. Set Gate A to lock the first echo. Press to make the highest echo reach 80% of the screen. The sound path value is displayed on the screen. If the vertical sound path is not 25mm, press... -
Page 28: Calibration Of The Angle Beam Probe
YUSHI INSTRUMENTS the sound path distance of the calibration block, at this point, the sound velocity is the sound velocity of the material. 4.3 Calibration of the Angle Beam Probe Concerning the contact detection by angle beam probe, distance calibration is a must before any detection task. - Page 29 YUSHI INSTRUMENTS Figure 4-5 4. Calibrate the probe zero: put the probe on the test block and move it till the reflection echo of the hollows of R100mm reaches its highest level. The sound path value will be displayed at the top left...
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Page 30: Making Of Dac Curve
YUSHI INSTRUMENTS Figure 4-7 Figure 4-9 Figure 4-8 There are many ways to calibrate the angle beam probe, the standard test block isn't wedded to the calibration, and you can also use a pinhole of known depth to do calibration. Theoretically, the smaller reference reflector is, the more precise the calibration is, but the difficulty of calibration increases correspondingly. -
Page 31: Making Of Avg Curve
YUSHI INSTRUMENTS Figure 4-10 3. Press the start menu of Gate A to set its position and lock the echo, press to let the echo display 80% of the screen automatically when it is the highest wave. 4. Press and press again when the first DAC curve is displayed on the screen, the value of the DAC echo on the submenu is 1 automatically. -
Page 32: Chapter 5 Skills Of Using The Instrument
YUSHI INSTRUMENTS 4. Couple the probe to the reference block( the thickness is 220mm and the probe diameter isφ5) completely and adjust gate A start to lock the highest bottom echo. 5. Choose sensitivity submenu in AVG menu, and set the relative value. Press Ok, and the instrument sets the gain automatically according to theφvalue of sensitivity. -
Page 33: Making The Best Of The Prompting Messages On The Screen Druing The Operation Process
YUSHI INSTRUMENTS 5.2 Making the best of the prompting messages on the screen druing the operation process When you operate the instrument and some operations need confirming by the operator, on the upper part of the screen displays the prompting messages. -
Page 34: Peak Value Memory Function
YUSHI INSTRUMENTS Figure 5-2 Figure 5-1 5.6 Peak value memory function When the function is enabled, the screen will record the highest point of the echo and joint all the points with dashed line to form an envelope line, when a higher echo emerges, it will refresh the memory point at this position, otherwise, it keeps unchanged. -
Page 35: The Adjustment Of Sensitivity
YUSHI INSTRUMENTS 6.1.2 The adjustment of sensitivity Take flat-bottom test block as an example to illustrate the adjustment of sensitivity here. When the thickness of the steel plate is more than 20mm, use the 50% first echo of φ5 flat-bottom test block as the required sensitivity. -
Page 36: The Identification Of The Defect Location
YUSHI INSTRUMENTS When B1＜50％, the indicated defect length is the distance the probe center covers when B1 = 50%. The orbit of the probe center is the defect edge. During the process of scanning and detecting, when any above situation occurs, take off the probe and mark the boundary point with a marker pen. -
Page 37: Operating Steps
YUSHI INSTRUMENTS Note: S1: the distance between the flaw starting point and the left datum line of the test block S2: the distance between the flaw ending point and the left datum line of the test block S3: the distance between the highest point of the amplitude and the left datum line of the test block 6.2.1 Operating steps... -
Page 38: Chapter 7 Maintenance And Repairing
YUSHI INSTRUMENTS wave). Measure the distance from the probe to the left side of the steel plate and note down as S1. Then move parallel the probe to the right, back to the position of the highest wave, and keep moving the probe rightwards parallel till the echo drops to 40%. -
Page 39: Maintenance Of Rechargeable Battery
YUSHI INSTRUMENTS 7.4 Maintenance of rechargeable battery The capacity and life span of rechargeable batteries depend on the way they are used. Please use the fast charger attached with the instrument to recharge the batteries. Recharge the batteries under the following circumstances: The battery status is constantly shown on the display screen. -
Page 40: Chapter 8 Communication Between The Instrument And The Computer
YUSHI INSTRUMENTS squeezed during the process of transportation.) b. The keyboard or the display screen can’t work normally. c. It is kept in a place of high temperature, high humidity or corrosively. Chapter 8 Communication between the Instrument and the Computer 8.1 The Communication between YUT-28series and the computer and the... -
Page 41: Main Functions
YUSHI INSTRUMENTS 8.2 Main Functions 1. “Download the number from the instrument to the PC”: This function can download the flaw detecting information, graphs and data saved in YUT-28series to PC. 2. “The current display of data serial number”: This function can control the setting of certain status on YUT-28series through PC. -
Page 42: Appendix I Flaw Detection Reports
YUSHI INSTRUMENTS Appendix I General Flaw Detection Report Flaw Detection Reports... -
Page 43: Appendix Ii Terminology
YUSHI INSTRUMENTS Appendix II Terminology This appendix lists the special terms used in ultrasonic nondestructive testing. Knowing the accurate definition of them will help users have a better understanding of this operator’s manual. Flaw: Wrong sizes, shapes, orientations, positions or property which may damage the work-pieces or the discontinuous which fails to meet the acceptance criteria. - Page 44 YUSHI INSTRUMENTS SCR (signal to clutter ratio): the ratio between the ultrasonic signal amplitude and the biggest background noise, generally represented by decibel (dB). Gain: the gaining logarithmic form of the amplifier voltage received by the ultrasonic defectometer, represented by decibel (dB).