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Contents ............................................................................................................................................................................ I
Chapter 1 A Brief Introduction to YUT-2620 .................................................................................................. 1
1.1 Names of the Major Components of the Instrument .................................................................................................... 1
1.2 Keypad ........................................................................................................................................................................ 1
1.3 Display Screen ............................................................................................................................................................ 2
1.4 Basic Operation of the Instrument ............................................................................................................................... 2
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 Main Menu and Functions ........................................................................................................................................... 3
1.5.1 Main Menu ...................................................................................................................................................... 3
1.5.2 Functional Keys .............................................................................................................................................. 4
Chapter 2 Functions, features, and parameters of the instrument ............................................................... 4
2.1 Basic functions of the instrument ................................................................................................................................ 4
2.2 Features of the instrument ........................................................................................................................................... 5
2.3 Specifications .............................................................................................................................................................. 6
Chapter 3 Detailed Operation Instructions .................................................................................................... 6
3.1 Basic Menu Functions ................................................................................................................................................. 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 .................................................................................................................................... 9
3.2 Setting Menu ............................................................................................................................................................... 9
3.2.1 Waveform Filling ............................................................................................................................................ 9
3.2.2 Color Scheme .................................................................................................................................................. 9
3.2.3 Language ....................................................................................................................................................... 10
3.2.4 Lighting ......................................................................................................................................................... 10
3.2.5 Alarming ....................................................................................................................................................... 10
3.2.6 Automatic Wave Height ................................................................................................................................ 10
3.2.7 Date ............................................................................................................................................................... 10
3.2.8 Time .............................................................................................................................................................. 11
3.2.9 Parameter Resetting ...................................................................................................................................... 11
3.3 Gate Menu ................................................................................................................................................................. 11
YUSHI INSTRUMENTS
Contents
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Summary of Contents for YUSHI YUT-2620
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Page 1: Table Of Contents
YUSHI INSTRUMENTS Contents Contents .................................... I Chapter 1 A Brief Introduction to YUT-2620 ....................1 1.1 Names of the Major Components of the Instrument ....................1 1.2 Keypad ..................................1 1.3 Display Screen ................................2 1.4 Basic Operation of the Instrument ..........................2 1.4.1 Power Supply .............................. - Page 2 YUSHI INSTRUMENTS 3.3.1 Gate A Menu .............................. 12 3.3.1.1 Starting of Gate A ............................ 12 3.3.1.2 Width of Gate A ............................12 3.3.1.3 Height of Gate A ............................. 12 3.3.1.4 Mode of Gate A ............................12 3.3.1.5 Display Choice ............................13 3.3.2 Gate B Menu ..............................
- Page 3 7.5 Batteries replacement ..............................39 7.6 Repairing ................................... 40 Chapter 8 Communication between the Instrument and the Computer ............ 40 8.1 The Communication between YUT-2620 and the computer and the use of data processing software ....... 40 8.2 Main Functions ................................41...
- Page 4 YUSHI INSTRUMENTS Appendix I Flaw Detection Reports ....................... 42 Appendix II TERMINOLOGY ........................43...
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Page 5: Chapter 1 A Brief Introduction To Yut-2620
YUSHI INSTRUMENTS Chapter 1 A Brief Introduction to YUT-2620 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 6: Display Screen
During the operation of the instrument, directly press the corresponding menu key, and the relevant menu will be displayed on the screen. There are 6 main menus in YUT-2620; and each main menu consists of several sub-menus, which can be switched through up and down keys among the operation pages. -
Page 7: Probe Connection
YUSHI INSTRUMENTS 1.4.2 Probe Connection When you use YUT-2620, 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 8: Functional Keys
YUSHI INSTRUMENTS Dual Probes, Probe Zero, Probe K Value, Front Edge Length, Relevant Options Probe Work Piece Thickness, Probe type, Probe frequency, Probe Setting Probe diameter DAC Echo, Gate A Start Position, TVG, Curve mode, RL, SL, Setting of Making Curve EL;... -
Page 9: Features Of The Instrument
YUSHI INSTRUMENTS as well as print out reports 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. -
Page 10: Chapter 3 Detailed Operation Instructions
YUSHI INSTRUMENTS Sound Velocity of the Material: (0.039 to 0.394) inch/µs Operation mode: pulse echo, dual crystal Pulse displacement: (0-78.7) inch Probe zero: (0-99.99) µs Damp: 33/50/100/500Ω Gain adjustment: (0-110)dB，0.1dB、1.0dB、 2.0dB、6.0dB Full automatic adjustment of steps Reject scope: 0-80% adjustable Vertical linearity error: ≤3%... -
Page 11: Sound Velocity
YUSHI INSTRUMENTS 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. The range of adjustment is from 1000 to 9999m/s. On the parameter menu, press (up) or... -
Page 12: Compensation
YUSHI INSTRUMENTS On the gain submenu, press Ok to adjust the steps. The steps are 0.1, 1.0, 2.0 and 6.0. 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. -
Page 13: Wave Height Readings
YUSHI INSTRUMENTS You should handle this function with great caution, as it may happen that you suppress echoes from flaws as well. In addition, some specifications expressly forbid using the reject function. 3.1.8 Wave Height Readings The percentage of the waveform accounting for of the screen height in windows. -
Page 14: Alarming
YUSHI INSTRUMENTS Select the setting menu, the press (up) or (down) to select the language submenu. Then press (left) or (right) to choose Chinese or English. 3.2.4 Alarming You can use this function to set whether there is an alarm. -
Page 15: Parameter Resetting
YUSHI INSTRUMENTS 3.2.8 Parameter Resetting Select the setting menu, press (up) or (down) to select the parameter resetting submenu. Press (left) or (right) to choose whether to reset the parameters, and press Ok reset the factory defaults. If you want to cancel the resetting, press any key. -
Page 16: Width Of Gate A
YUSHI INSTRUMENTS 3.3.1.2 Width of Gate A Select Gate A menu, press (up) or (down) to select the width of Gate A submenu, then press (left) or (right) to adjust the values. Note: the width of Gate A is the backward position of Gate A. Minimum adjustment range is 2mm, while the maximum one is same as the sound path value. -
Page 17: Gate B Menu
YUSHI INSTRUMENTS Display Meaning Display Meaning The sound path value of the echo in Gate The height of the echo in Gate A The sound path value of the echo in Gate The height of the echo in Gate B... -
Page 18: Height Of Gate B
YUSHI INSTRUMENTS 3.3.2.3 Height of Gate B Select Gate B menu, press (up) or (down) to select the height of Gate B submenu, then press (left) or (right) to adjust the values. Note: the height of Gate B is the response and measurement thresholds. You can adjust the value in the 2%-98% range of the vertical full-scale on the screen. -
Page 19: Dual Probes
YUSHI INSTRUMENTS 3.4.1 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. Note: On refers to the dual probes mode; while Off refers to the single crystal probe mode. -
Page 20: Front Distance
YUSHI INSTRUMENTS 3.4.4 Front Distance In the menu, you can set the front edge length value of the probe (referring the distance between the front edge of the angle beam probe to the point of incidence of the probe). （up) or Select the probe menu, press (down) to select the front distance submenu. -
Page 21: Probe Diameter
YUSHI INSTRUMENTS 3.4.8 Probe Diameter This menu is used for choosing the size of probes. Select the probe menu twice, press (up) or (down) to select the probe diameter submenu. Then press (left) or (right) to change the probe frequency. -
Page 22: Distance Compensation
YUSHI INSTRUMENTS Note: adjust the Gate A position to catch the reference echo. The adjustment range is 0-9999mm.3.5.3 3.5.3 Distance Compensation When penetrating through the work-piece, the sonic power of ultrasonic waves always attenuates along with the enlargement of the spreading distance. When detecting the flaws of large work-pieces and severe attenuated materials, the high receiving sensibility is required to discover the small flaw signals. -
Page 23: Avg Mode
YUSHI INSTRUMENTS Note: SL can be adjusted free in a range 12dB higher than the DAC reference line with a step of 0.5dB, or 20dB lower, but it can not be lower than the EL or higher than the RL. -
Page 24: Φ Value Calculation
YUSHI INSTRUMENTS The adjustment range is fromφ0 to φ90. 3.5.12 Φ Value Calculation This function is used for calculating the flaw equivalent. Press “Curve” key for three times to select the AVG menu, then press (up) or (down) to select theφvalue submenu. Then, press Ok to calculate the flaw equivalent value of the present flaw echo in gate A. -
Page 25: Deletion
YUSHI INSTRUMENTS the data set of an appointed memory number. First, set the memory number as the number you want, then select the option of storage, press (left) or (right). When it comes to confirm storing the file on the screen, press Ok to confirm and press any other key to cancel. -
Page 26: Freezing
YUSHI INSTRUMENTS Figure 3-1 Figure 3-2 Note: When the DAC curve has been made, press the automatic gain, the instrument will automatically adjust the compensating gain so as to make the echo inside the gate reach 80% of the screen. The changes of echoes do not mean the changes of DAC curve. However, if the option is on the parameter menu and on the gain option, press the automatic gain, the instrument will adjust the gain automatically. -
Page 27: Chapter 4 Application Of Testing
4.1 Calibration Method and Steps of the Instrument Before you use YUT-2620 to test the work piece, you should first calibrate the instrument: according to the material, size of the work piece to be tested as well as the relevant standards, choose the appropriate test method and probe, set the sound velocity, sound path of the material, set the working frequency and other instrument parameters as well as the probe parameters, and adjust the probe zero. -
Page 28: Operation Steps
YUSHI INSTRUMENTS Lock the first echo with Gate A, then adjust the probe zero submenu on the probe menu till the measured data show the correct sound path value of the echo calibrated. Note: the lower the sound path value is, the more accurate the calibration is. -
Page 29: Measurement Of The Sound Velocity Of The Material
YUSHI INSTRUMENTS 4.2.3 Measurement of the Sound Velocity of the Material 1. Set the approximate sound velocity of the material on the sound velocity submenu under the parameter menu; 2. Couple the probe to the known calibration position of the calibration block (the sound path is known), open Gate A, adjust the start position of the gate to let Gate A catch the primary echo;... -
Page 30: Operation Steps
YUSHI INSTRUMENTS 4.3.2 Operation Steps Calibration of CSK-IA as an example. 1. Press to enter the parameter menu, press (up) or (down) to select the sound path submenu. Then press (left) or (right) to set the value as 125mm. 2. Press (up) or (down) to select the sound velocity submenu. - Page 31 YUSHI INSTRUMENTS hollows of R100mm reaches its highest level. The sound path value will be displayed at the top left corner on the screen, if the value isn't 100mm, press to enter the probe menu, press (up) or (down) to select the probe zero submenu, then press...
- Page 32 YUSHI INSTRUMENTS Figure 4-7 Figure 4-8 Figure 4-9 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.
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Page 33: Making Of Dac Curve
YUSHI INSTRUMENTS 4.4 Making of DAC Curve (NB/T 47013-2015 by CSK-IIA block) 1. First calibrate the probe as above mentioned 2. Couple the probe to the reference block to make the echo of the first reference point reach the highest level (we use CSK-IIA test block as an example, as shown in Figure 4-10). - Page 34 YUSHI INSTRUMENTS 1. Calibrate the instrument first. Check “Straight beam probe zero calibration” for details. twice to enter into probe type submenu, then choose “Nor pro” (straight beam probe). 2. Press Adjust the probe frequency in the “Pro fre” submenu, and set the size of the probe connected in “Pro dia”...
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Page 35: Chapter 5 Skills Of Using The Instrument
YUSHI INSTRUMENTS Chapter 5 Skills of Using the Instrument When you use the instrument to detect the work piece, it is very necessary to make full use of all sorts of powerful functions of the instrument to guarantee the accuracy of the detection and to improve efficiency. -
Page 36: Using Batteries To Reduce Interference
YUSHI INSTRUMENTS 5.4 Using batteries to reduce interference When the AC mains are disturbed by the strong interference signals, you should use batteries. By using batteries, you can cut off the interference signals in the AC mains effectively, and other external interference signals will not influence the instrument. -
Page 37: Chapter 6 Application And Practice Of Flaw Dectetion
Chapter 6 Application and Practice of Flaw Detection This chapter introduces how to use YUT-2620 to test steel plate and welding line. This chapter is based on the flaw detection methods and reports forms authorized by the National Nondestructive Testing Personnel Qualification Test Committee. -
Page 38: The Identification Of Flaws
YUSHI INSTRUMENTS The arrows represent the scan directing Put the probe on the flat-bottom test block, move the probe to find out the biggest echo ofφ5 flat-bottom hole. Press to enter the parameter menu. Use the direction keys to adjust Gain and set the first echo to 50% of the scale. -
Page 39: The Identification Of The Defect Location
YUSHI INSTRUMENTS 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. Then repeat this until other boundary points are identified. -
Page 40: Operating Steps
YUSHI INSTRUMENTS 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 According to the adjusting methods of angle probes stated above, start the welding line flaw detecting after the curved lines have been drawn. -
Page 41: 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 42: Environment Requirements
YUSHI INSTRUMENTS 7.3 Environment requirements The instrument should be strictly kept from collision, dust, humidity, magnetic fields and oil or grease. Don’t use anything soluble to wipe and clean the surface of the instrument. 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. -
Page 43: Repairing
YUSHI INSTRUMENTS 7.6 Repairing In order to get the optimal performance of YUT-2620, and minimize its failure rate, the latest technology and quality components have been adopted. The process quality control and process testing have passed ISO9001 International Quality System Authentication. -
Page 44: Main Functions
YUSHI INSTRUMENTS saved graphs and data to the PC. The client software installed on PC can edit, save or print these graphs and data. Operating steps: 1. Connect the instrument and PC with the communication cable. 2. Press to enter the save menu. Use the up and down keys to select the communication submenu. - Page 45 PC. 4. “Print the flaw detection report”: a. When connected with YUT-2620, download the flaw detecting information graphs and data saved in the instrument to PC. b. Select the data information for print in data interface. Click “Print report” menu. Then click the “print preview”.
- Page 46 YUSHI INSTRUMENTS Appendix I General Flaw Detection Report...
- Page 47 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 workpieces or the incontinuity which fails to meet the acceptance criteria.
- Page 48 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).