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OPERATION MANUAL Dakota NDT Sonic Thickness Tester P/N P-158-0006 Rev 1.00, January 2024...
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CONTENTS CHAPTER ONE INTRODUCTION ..............1 1.1 D ........................1 ISCLAIMER CHAPTER TWO QUICK STARTUP GUIDE ............. 2 2.1 RX8-DL O ......................2 VERVIEW 2.2 S ................... 4 ELECTING THE RANSDUCER 2.3 P & C ..................... 5 ROBE ALIBRATION 2.4 M ........................10...
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CHAPTER EIGHT THRU PAINT MEASUREMENT TECHNIQUE ....51 8.1 I ..............51 NTRODUCTION TO AINT EASUREMENT 8.2 U ....................51 SING AINT CHAPTER NINE ADDITIONAL FEATURES OF THE RX8-DL ....... 52 9.1 H ......................52 PEED 9.2 A ........................53 LARM 9.3 D ......................55 IFFERENTIAL 9.4 K...
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12.1 C ................94 OMPUTER YSTEM EQUIREMENTS 12.2 I .....................94 NSTALLING 12.3 C RX8-DL ................94 OMMUNICATING WITH THE 12.4 L ........................94 OWER 12.5 U RX8-DL ....................94 PGRADING THE APPENDIX A - VELOCITY TABLE ..............96 APPENDIX B - SETUP LIBRARY ..............98...
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CHAPTER ONE INTRODUCTION The Dakota NDT model RX8-DL is a digital ultrasonic sonic thickness tester with time based B-Scan and alpha numeric data logger. Based on the same operating principles as SONAR, the RX8-DL is capable of measuring the thickness of various materials with accuracy as high as ...
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CHAPTER TWO QUICK STARTUP GUIDE Turn the RX8-DL on and off using the switch located on the bottom right corner of the keypad. When RX8-DL is initially turned on, a flash logo and blinking lights will be displayed prior to entering into the main measurement screen.
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Dakota NDT D. Feature Status Bar – Indicates the features currently enabled and in use in the following order: Measurement Mode Differential Mode High Speed Scan Mode Alarm Mode Gain Setting E. Digital Material Thickness Value – Extra large font size for viewing ease.
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RX8-DL Sonic Thickness Tester 2.2 Selecting the Transducer Type The RX8-DL is equipped with a transducer list of all of the dual element transducer options that can be connected to the gauge. These are dual element transducers with different diameters and frequencies, depending on the material and application requirements.
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Dakota NDT 2) Use the arrow keys to scroll through the sub menu items until TYPE is highlighted. 3) Press the key to display the table/list of transducers. 4) Use the arrow keys to highlight the transducer type currently connected to the gauge.
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RX8-DL Sonic Thickness Tester The next steps are to perform a probe zero and calibrate the RX8-DL to the material and transducer selected. If the sound velocity is unknown, the RX8-DL can be calibrated to a known thickness sample. The procedures are outlined as follows:...
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Dakota NDT Note: If the “zero probe” cell is not highlighted, press the keys to highlight. 4) Alternatively, press the key once to activate the menu items tab. Press the key multiple times to tab right and the key multiple times to tab left until the PRB menu is highlighted and displaying the submenu items.
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Note: The value that is displayed will change depending on the current velocity setting in the RX8-DL. Disregard the number that is displayed. It is not important. What is important is accurately performing the steps outlined above to insure reliability of the probe zero calculation.
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Dakota NDT 1) Physically measure an exact sample of the material, or a specific location directly on the material using a set of calipers or a digital micrometer. 2) Apply a drop of couplant on the transducer and place the transducer in steady contact with the sample or actual test material measured.
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If the thickness is not correct, repeat the steps above. 2.4 Measure The RX8-DL is now ready to measure. There are two different measurement view options each with a specific purpose – Digits & B-Scan. The steps below outline how...
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DIGITS: Displays the digital thickness value using a large font size. This view is useful when the RX8-DL is being used as a basic sonic thickness tester. BSCAN: The Time Based B-Scan provides the user with a cross sectional view of the material being tested.
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RX8-DL Sonic Thickness Tester 1) Press the key once to activate the measure menu items. Press the key multiple times to move right and the key multiple times to move left, until the either the START or DEPTH cell is highlighted.
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Dakota NDT 4) Press the arrow keys to scroll the digit locations. 5) Repeat steps 3 & 4 until the START or DEPTH value is correctly displayed. 6) Press the key to set the START and DEPTH value and return to the measure screen, or to cancel entering the START or DEPTH value.
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CHAPTER THREE KEYBOARD, MENU, & CONNECTOR REFERENCE 3.1 Menu Key (Operation & Sub Menus) The Menu key activates the primary menu structure containing 8 menu tab groups. These tab groups then contain sub menu items, or functions. The sub menu items have been organized in tab groups according to how closely they are related to the individual tab group names.
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Dakota NDT Activating and Getting Around in the Menu Items 1) Press the key once to activate the menu items tab. Press the key multiple times to tab right, and the key multiple times to tab left until the desired tab group is highlighted and displaying the submenu items.
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If the RX8-DL is not zeroed correctly, all of the measurements made using the RX8-DL may be in error by some fixed value. The RX8-DL is equipped with an optional automatic or manual zero feature. Refer to the section on page 30, for an explanation of this important procedure.
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Dakota NDT VELOCITY: Function to calibrate the RX8-DL by setting the velocity to a known material velocity. Refer to page 33 for further info. 3.4 DISP (display) – Menu VIEW: Selectable BSCAN (cross section), and DIGITS (large digits) views. Refer to page 42 for further info.
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RX8-DL Sonic Thickness Tester DEFAULT SETUP: Loads a basic default setup. Use only as a last resort when the setups in the RX8-DL have been corrupted and a computer is not accessible. Refer to page 91 for further info. LANGUAGE: Provides the user the ability to select different languages for the RX8- DL.
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RX8-DL. Refer to page 58 for further info. SHOW DATE: Gives the user the ability to display the date and time in the waveform area of the RX8-DL. The options are OFF, DATE, TIME, BOTH. Refer to page 59 for further info.
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The primary function of the OK key is confirmation of a change or selection. Additionally, the OK key also toggles the Hot Menu area to a large digits display while in measurement mode. If the RX8-DL is displaying a grid log, the OK key toggles an advance to row number option.
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Dakota NDT 3.16 ON/OFF Key The ON/OFF key simply powers the unit either ON or OFF. Note: Unit will automatically power off when idle for 5 minutes. All current settings are automatically saved prior to powering off.
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C female connector. It is designed to connect directly from the RX8-DL to a standard USB type A port on a PC. The cable supplied with the RX8-DL is a USB type C to a USB type A (pt# N-003-0330).
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CHAPTER FOUR PRINCIPALS OF ULTRASONIC MEASUREMENT 4.1 Time versus thickness relationship Ultrasonic thickness measurements depend on measuring the length of time it takes for sound to travel through the material being tested. The ratio of the thickness versus the time is known as the sound velocity. In order to make accurate measurements, a sound velocity must be determined and entered into the instrument.
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RX8-DL and selecting the ‘zero transducer’ option in the “PRB” menu, or the ‘zero probe’ option in the hot menu items.
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Dakota NDT detecting small defects. Also, the surface of the test material does not have to be as flat in order to obtain good measurements. Dual element transducers are normally used in pulse-echo mode for finding defects, and in echo-echo mode for through coating measurements.
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5.2 Which mode & transducer do I use for my application? High penetration plastics and castings The most common mode for these types of applications is pulse-echo. The RX8-DL has been optimized for cast materials. Cast iron applications require 1 - 5MHz frequencies, and cast aluminum requires a 10MHz frequency.
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Dakota NDT with extra resolution. The higher frequencies provide greater resolution and a lower minimum thickness rating overall. High temperature Use and select a special 2.25MHz and 5 MHz High temperature transducer for these types of applications. Both pulse-echo and echo-echo modes will also work for these applications.
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MAKING MEASUREMENTS 6.1 Selecting the Transducer Type The first step in using the RX8-DL is to plug the transducer into the gauge and power up the unit to display the main measurement screen. The diameter and frequency should be noted in order to select a transducer from the list of probes in the gauge.
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Dakota NDT 3) Press the key to display the list of transducer options. 4) Press the arrow keys to scroll through the transducer list until the appropriate type is highlighted. 5) Press the key to select the transducer type and display overwrite confirmation screen.
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If the RX8-DL is not zeroed correctly, all measurements may be in error by some fixed value. In order to perform a zero, the gauge must be set to pulse-echo measurement mode.
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Dakota NDT 2) With the “zero probe” hot menu cell highlighted by default, press the key to display the confirmation screen, followed by pressing the key to perform the zero. Note: If the “zero probe” cell is not highlighted, press the keys to highlight.
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6.3 Material Calibration In order for the RX8-DL to make accurate measurements, it must be set to the correct sound velocity of the material being measured. Sound will travel at different speeds in different material types. For example, the velocity of sound through steel is about 0.233 inches per microsecond, versus that of aluminum, which is about 0.248...
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If the material velocity is known, the user may wish to simply enter the velocity number into the RX8-DL, rather than have the RX8-DL calculate the velocity value using a known thickness on a material sample. The steps for entering the velocity...
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As previously discussed, the RX8-DL has a one or two point calibration option. The one point calibration option is most suited for linearity over large ranges, as noted above.
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Dakota NDT Note: Be sure that the probe zero has been performed prior to performing this procedure. 1) Physically measure an exact sample of the material, or a location directly on the material, to be measured using a set of calipers or a digital micrometer.
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(6.35mm), the user would perform a one point calibration on a known thickness sample close to .250” (6.35mm), followed by a two point calibration close to .080” (2.03mm). When a two point calibration is performed, the RX8-DL calculates the zero and the velocity. The following steps outline this procedure:...
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Dakota NDT Two Point Calibration 1) Physically measure an exact sample of the material or a location directly on the material to be measured using a set of calipers or a digital micrometer. 2) Apply a drop of couplant on the transducer and place the transducer in steady contact with the sample or actual test material.
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RX8-DL Sonic Thickness Tester 4) Press the key to display the Digits Edit Box. 5) Press the arrow keys to scroll the highlighted value. 6) Press the arrow keys to scroll the digit locations. 7) Repeat steps 5 & 6 until the known thickness value is correctly displayed.
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Dakota NDT being tested. Use these values only if a close approximation is acceptable. Follow the steps below to select a basic material type: Selecting a Basic Material Type 1) Press the key once to activate the menu items tab. Press the...
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RX8-DL Sonic Thickness Tester 4) Press the arrow keys to scroll through the material list until the appropriate material is highlighted. 5) Press the key to overwrite the material type and display the menu items with the new material type selected.
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We’ll take a better look at these options in this chapter. Note: In order to recall and use the new adjustments made to the RX8-DL at a later time, the user must save the modified settings in one of the setup locations prior to...
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RX8-DL is reliably measuring the same value 250 times per second, depending on which measurement mode and features are enabled. B. Battery Icon – Indicates the amount of battery life the RX8-DL has remaining. C. Velocity – The material velocity value the RX8-DL is currently using or calibrated for.
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Dakota NDT E. Digital Material Thickness Value – Extra large font size for viewing ease. F. Scan Bar – Another view of material thickness in a deflection style horizontal bar. This is another visual tool that would enable the user the ability to see thickness changes during high speed scans from flaws and pits.
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RX8-DL is reliably measuring the same value 250 times per second, depending on which measurement mode and features are enabled. B. Battery Icon – Indicates the amount of battery life the RX8-DL has remaining. C. Velocity – The material velocity value the RX8-DL is currently using or calibrated for.
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Dakota NDT 1) Press the key once to activate the menu items tab. Press the key multiple times to tab right, and the key multiple times to tab left, until the DISP menu is highlighted and displaying the submenu items.
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RX8-DL Sonic Thickness Tester Start & Depth 1) Press the key once to activate measure menu items. Press the key multiple times to move right and the key multiple times to move left, until the START cell is highlighted. 2) Press the...
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8) Finally, repeat the steps above to adjust the B-DEPTH. Adjusting the B-Scan Speed The RX8-DL has the capability to adjust the the scrolling speed of the time based B- Scan displayed in the gauge. The procedures to adjust the speed are outlined...
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If it’s turned down too much, you can’t hear it at all. The RX8-DL has a five position gain switch (vlow, low, med, hi, vhi), with Med gain set at 46dB, with an overall cut/boost of 6dB in 3dB increments. The gain can be adjusted to accommodate a variety of material types, and offers the user flexibility.
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RX8-DL to a higher gain setting. Another example might be the need to increase overall sensitivity for locating fine pits or flaws.
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RX8-DL Sonic Thickness Tester 1) Press the key once to activate the menu items tab. Press the key multiple times to tab right, and the key multiple times to tab left, until the PRB menu is highlighted and displaying the submenu items.
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8.2 Using Thru Paint Mode By selecting the transducer type from the list of probes stored in the RX8-DL, a basic echo-echo thru paint configuration is recalled from memory. Each of the ‘high damped’ transducers in the list contain pre-configured echo-echo settings. However, fine adjustments may be necessary in order to be suitable for your specific applications.
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ADDITIONAL FEATURES OF THE RX8-DL 9.1 High Speed Scan The High Speed Scan feature of the RX8-DL increases the overall repetition rate to a maximum of 250Hz with a high speed screen refresh rate of 25 times a second. This...
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9.2 Alarm Mode The Alarm Mode feature of the RX8-DL provides the user with a method of setting tolerances, or limits, for a particular application requirement. This feature may be used for a variety of applications to verify the material is within the manufacturer specifications.
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RX8-DL Sonic Thickness Tester 4) Continue on to the next section “Setting the Alarm Low Limit”. Setting the Alarm Low Limit 1) Assuming the ALARM is ON, use the arrow keys to scroll through the sub menu items until ALARM LOW is highlighted.
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ALARM HIGH limit using the same procedures. 9.3 Differential Mode The Differential Mode of the RX8-DL provides the user with the ability to set a nominal value, according to what the expected thickness should be, and measure the +/- difference from the nominal value entered.
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RX8-DL Sonic Thickness Tester 1) Press the key once to activate the menu items tab. Press the key multiple times to tab right, and the key multiple times to tab left, until the UTIL menu is highlighted and displaying the submenu items.
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9.4 Key Click When a key is pressed on the RX8-DL keypad, the user can control whether or not an audible beep is sounded and at what volume level, if any. The procedure for this feature/preference is outlined below:...
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9.5 Set Date & Time The RX8-DL is equipped with an internal clock to time and date stamp the log, setup and screen capture files for reporting/documentation purposes. The procedures for setting the time and date are outlined below: Setting Date &...
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9.6 Show Date & Time The RX8-DL can be configured to show the date & time in the active A-Scan window as needed or preferred (off/date/time/both). The procedure for activating and displaying the above options are outlined below:...
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.tif (tagged image) file format that can be opened using any graphics viewer. With the storage capacity of the RX8-DL the user can store as many screens shots as needed. It should also be mentioned that this feature is immediately activated on boot up.
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Dakota NDT Capturing Screen Shots 1) To capture a file, press the MULT MODE key to freeze the screen and enter the measure mode menu. 2) Press the arrow keys multiple times until CAPTURE TO FILE is highlighted. 3) Press the key to display the alpha numeric edit box to name and save the screen shot.
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RX8-DL Sonic Thickness Tester The capture viewer enables a user to view any of the saved screen captures on the SD card, using the MiniMax. This is handy if a PC isn’t available, but the user has a need to review the screen shots captured.
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Dakota NDT 3) Press the key to display the list of images saved on the SD card. 4) Use the arrow keys to scroll through the list until the desired image name is highlighted. 5) Press the key to display the image.
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Note: The name and note fields are 20 characters in length using any combination of the above. The RX8-DL has a 4gb SD memory card for virtually unlimited storage capacity. Along with every measurement stored, is a corresponding screenshot of the DIGITS or B-SCAN views, as well as all the RX8-DL settings for every individual measurement.
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Dakota NDT Log Name 1) Press the key once to activate the menu items tab. Press the key multiple times to tab right, and the key multiple times to tab left, until the DATA menu is highlighted and displaying the submenu items.
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RX8-DL Sonic Thickness Tester 5) Press the key to activate the Alpha Edit Box. 6) Use the , & arrow keys to highlight the appropriate alpha characters. 7) Press the key to select a character and advance to the next field of the grid name.
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Dakota NDT 2) Press the key to activate the Alpha Edit Box. 3) Use the , & arrow keys to highlight the appropriate alpha characters. 4) Press the key to select a character and advance to the next field. 5) Use the key to backspace if necessary.
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RX8-DL Sonic Thickness Tester Use the same logic when choosing the lower right corner. An individual grid can be up to 999 rows and 52 columns. Note: If the “Engine” format is selected, the X refers to cylinder #, and Y to clock positions.
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Dakota NDT 3) Use the arrow keys to scroll the Columns, and the arrow keys to scroll the Rows. 4) Press the key to select the coordinate and return to the setup list, or to cancel setting the coordinate. Grid Coordinates – Lower Right...
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RX8-DL Sonic Thickness Tester 3) Use the , & arrow keys to scroll the Columns, and the arrow keys to scroll the Rows. 4) Press the key to select the coordinate and return to the setup list, or to cancel the selection and return to the setup list.
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Dakota NDT 1) Use the arrow keys to scroll through the setup list until INCR. DIR is highlighted. 2) Use the arrow keys to toggle the Increment direction NONE, NORTH, EAST, SOUTH, or WEST. 3) Continue on to the next section “Saving a Grid or Seq File”.
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RX8-DL Sonic Thickness Tester 3) Press the key to save the Grid, or the key to cancel the setup and return to the DATA menu. 4) Press the key to return to the measurement screen and begin storing readings. 10.3 Storing a reading Now that a grid or sequential log has been created, it’s time to make some...
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GRID. Note: Once the file is open, it will remain open until it’s closed or another file is opened by the user. If the gauge is powered off, the RX8-DL will automatically open the file when powered on.
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RX8-DL Sonic Thickness Tester 10.4 Viewing stored readings It is sometimes necessary to go back and view the stored readings and B-Scans using the RX8-DL without a PC. The following procedures outline this process: Viewing Stored Readings & A/B Scans 1) Press the key once to activate measure menu items.
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Dakota NDT 5) Abort displaying the Grid at any time by pressing the key. 10.5 Deleting Grids (Files) Deleting Files One File 1) Press the key once to activate the menu items tab. Press the key multiple times to tab right and the key multiple times to tab left until the DATA menu is highlighted and displaying the submenu items.
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RX8-DL Sonic Thickness Tester 3) Press the key to display the File List Box. 4) Use the arrow keys to scroll through the stored Files until the target File to delete is highlighted. 5) Press the key to delete the File.
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Dakota NDT 2) Use the arrow keys to scroll through the sub menu items until DELETE ALL DATA is highlighted. 3) Press the key to activate the confirmation screen. 4) Press the key to delete All Files from memory, or the key to abort.
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RX8-DL Sonic Thickness Tester Editing a Grid Note: This section assumes the file to edit is already open. 1) Press the key once to activate the menu items tab. Press the key multiple times to tab right and the key multiple times to tab left until the DATA menu is highlighted and displaying the submenu items.
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Dakota NDT key to activate the Alpha Edit box – Only used when 5) Press the editing the NAME or NOTE. 6) Use the , & arrow keys to highlight the appropriate alpha characters. 7) Press the key to select a character and advance to the next field of the note.
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The user may have transferred grid templates from a PC to the RX8-DL, or setup grids using the RX8-DL at an earlier time. The name of the currently active file is always displayed at the top of the Grid Box in measurement mode (refer to photo below).
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Dakota NDT 1) Press the key once to activate the menu items tab. Press the key multiple times to tab right and the key multiple times to tab left until the DATA menu is highlighted and displaying the submenu items.
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RX8-DL Sonic Thickness Tester 5) Press the key to activate the confirmation screen. 6) Press the key to load the file from memory. 7) Press the key to return to the measure screen. 10.8 Closing an active File - Close A user might not have a current requirement to store measurements, but a file is currently open or active and needs to be closed.
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Dakota NDT 2) Use the arrow keys to scroll through the sub menu items until CLOSE is highlighted. 3) Press the key to close the active file. Note: Following the key press, the CLOSE text will be grayed out indicating the file has been close and is...
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Often times users are faced with a variety of tasks and applications that are sometimes similar, but very different. The RX8-DL offers a custom setup feature to store a variety of setup configurations or calibrations for recall at any time. The RX8- DL can store a total of 64 custom setups that can be backed up and restored to and from a PC and gauge.
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Dakota NDT 2) Use the arrow keys to scroll through the sub menu items until OPEN is highlighted. 3) Press the key to display the Setup List Box. 4) Use the arrow keys to scroll through the setups until the target setup is highlighted.
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RX8-DL Sonic Thickness Tester 11.3 Saving a Setup Once the RX8-DL parameters and features have be adjusted for a given application, the user may elect to save these setting to a specific setup location for future use. This can potentially save time and reduce error between users.
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Dakota NDT 3) Press the key to display the Save Setup Parameters List Box. 4) Press the arrow keys to scroll the Name and Note parameters. 5) When the parameter to edit is highlighted, press the key to activate the Alpha Edit Box.
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RX8-DL Sonic Thickness Tester 8) If both parameters will be edited, repeat steps 4 – 7. 9) Use the arrow keys to scroll to and highlight SAVE SETUP. 10) Press the key to activate the Setup List Box. 11) Use the arrow keys to scroll through the setups until the target location to save the Setup is highlighted.
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Dakota NDT 12) Press the key to activate the confirmation screen. 13) Press the key to save the Setup, or to cancel saving the Setup. 14) Finally, press the key to return to the measurement screen. Note: The Name and Comments of the Setup can be edited at any time by simply repeating the Save Setup routine described above.
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RX8-DL Sonic Thickness Tester 1) Press the key once to activate the menu items tab. Press the key multiple times to tab right and the key multiple times to tab left until the SETUP menu is highlighted and displaying the submenu items.
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11.5 Loading the Default Setup The default setup feature loads factory settings. If the RX8-DL isn’t functioning properly or a parameter appears corrupt, loading the defaults will return the gauge back to factory settings. The procedure to load defaults is outlined below: Note: The default file contains no probe zero data.
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11.6 Selecting a Language The RX8-DL is equipped with a language option. Currently, the only languages supported are English, Spanish, German, French, Hungarian, Czech, however the list continues to grow. Check with Dakota for an updated list. The steps to select one of...
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Dakota NDT 1) Press the key once to activate the menu items tab. Press the key multiple times to tab right and the key multiple times to tab left until the SETUP menu is highlighted and displaying the submenu items.
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12.5 Upgrading the RX8-DL The RX8-DL can be upgraded to the latest revision of firmware at any time. Simply download the latest version posted on the Dakota NDT website, copy the upgrade file to the main drive directory RX8-DL, and use the upgrade utility located in the XFER menu.
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2) Press the key to display the upgrade confirmation screen, followed by pressing key to start the upgrade process. Note: The RX8-DL will power down and the alarm lights will flash during the upgrade process.
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APPENDIX B - SETUP LIBRARY Name Comment 1 Gn/AGC Velocity Enter Custom Name … … … … … … …...
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Warranty Statement Dakota NDT warrants the RX8-DL against defects in materials and workmanship for a period of two years from receipt by the end user. Additionally, Dakota NDT warrants transducers and accessories against such defects for a period of 90 days from receipt by the end user.
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