Dakota-ultrasonics DFX-8 plus MANUAL2 User Manual

OPERATION MANUAL DAKOTA ULTRASONICS DDFFXX--88 SSeerriieess Material & Coating Thickness Gauges (Manual 1 of 2) P/N P-250-0003

Dakota Ultrasonics 6 COATING TYPE MATL 2PT RANGE PULSE THRESHOLD 1 THRESHOLD 2 THRESHOLD 3 DELETE VELOCITY B-SCAN SPEED PULSER VOLTAGE

Dakota Ultrasonics 96 at point (C) in the incorrect diagram, to point (B) in the correct diagram. If we adjust the GATE2 hold-off further to the righ

97 CHAPTER NINE PULSE-ECHO COATING & COATING TECHNIQUES 9.1 Introduction to Pulse-Echo Coating Measurement (PECT) In the previous sections we’ve d

Dakota Ultrasonics 98 3) From the tabbed menus under TUNE, MEASURE MODE. The steps that follow will demonstrate all three methods in the order listed

DFX-8 Ultrasonic Thickness Gauge 99 Multi Mode Key Pressed (PECT & CT) Applied to Metals Not Applied to Metals

Dakota Ultrasonics 100 1) Press the MENU key once to activate the menu items tab. Press the MENU key multiple times to tab right, and the ESC key mul

DFX-8 Ultrasonic Thickness Gauge 101 9.3 Zero Coating In order to account for very slight electronic differences in transducers of the same type, freq

Dakota Ultrasonics 102 the PRB menu is highlighted and displaying the submenu items. Alternatively, press the LEFT and RIGHT arrow keys multiple ti

DFX-8 Ultrasonic Thickness Gauge 103 9.4 Coating Calibration (PECT) Known Velocity If the coating velocity is known, the user may wish to simply enter

Dakota Ultrasonics 104 3) Press the ENTER key to display the Digits Edit Box. 4) Press the LEFT and RIGHT arrow keys multiple times using the left b

DFX-8 Ultrasonic Thickness Gauge 105 Known Thickness Sometimes the sound velocity of a coating material is unknown. In this case a sample with a know

DFX-8 Ultrasonic Thickness Gauge 7 >> End DATA UTILS XFER NEW AUTO FIND BACKUP SETUPS EDIT SCAN MODE COPY DATA OPEN ALARM COPY SCREENS CLOS

Dakota Ultrasonics 106 MENU key once to activate the menu items tab. Press the MENU key multiple times to tab right and the ESC key multiple times to

DFX-8 Ultrasonic Thickness Gauge 107 Note: CHECK YOUR CALIBRATION! Place the transducer back on the calibration point. The coating thickness readin

Dakota Ultrasonics 108 One Point Calibration Note: Use the maximum coating sample for the one point calibration first. 1) Physically measure the th

DFX-8 Ultrasonic Thickness Gauge 109 3) Use the UP and DOWN arrow keys multiple times using the left button wheel to scroll through the sub menu ite

Dakota Ultrasonics 110 Two Point Calibration Note: Use the minimum coating sample for the two point calibration. 1) Physically measure the thinner

DFX-8 Ultrasonic Thickness Gauge 111 3) Use the UP and DOWN arrow keys multiple times using the left button wheel to scroll through the sub menu ite

112 CHAPTER TEN ADDITIONAL FEATURES OF THE DFX-8 10.1 Auto Find The DFX-8 is equipped with a very handy feature for locating the detection point of a

DFX-8 Ultrasonic Thickness Gauge 113 4) Press the ENTER key to display the confirmation dialog box “set delay and width values”. 5) Press the OK key t

Dakota Ultrasonics 114 2) Use the UP and DOWN arrow keys multiple times using the left button wheel to scroll through the sub menu items until SCAN

DFX-8 Ultrasonic Thickness Gauge 115 2) Use the UP and DOWN arrow keys multiple times using the left button wheel to scroll through the sub menu ite

Dakota Ultrasonics 8 an alternative probe should be selected from a list is if the user switched probes following initial power up and recognition. 2)

Dakota Ultrasonics 116 3) Alternatively, press the ENTER key to display the Digits Edit Box. 4) Press the UP and DOWN arrow keys multiple times usi

DFX-8 Ultrasonic Thickness Gauge 117 Alternatively, press the LEFT and RIGHT arrow keys multiple times using the left button wheel. 2) Use the UP

Dakota Ultrasonics 118 Setting the Differential Value 1) Assuming DIFFERENTIAL has been enabled and a value is being displayed to the right of the DI

DFX-8 Ultrasonic Thickness Gauge 119 Adjusting Brightness 1) Press the MENU key once to activate the menu items tab. Press the MENU key multiple tim

Dakota Ultrasonics 120 1) Press the MENU key once to activate the menu items tab. Press the MENU key multiple times to tab right and the ESC key mul

DFX-8 Ultrasonic Thickness Gauge 121 6) Finally, press the MEAS key to return to the measurement screen and begin taking readings. 10.7 DIM The DFX

Dakota Ultrasonics 122 3) Press the LEFT and RIGHT arrow keys multiple times on the right button wheel to scroll the DIM time. 4) Finally, press th

DFX-8 Ultrasonic Thickness Gauge 123 3) Use the LEFT and RIGHT arrow keys multiple times on the right button wheel to scroll through the DAMPING val

Dakota Ultrasonics 124 Detect Mark: The detect mark is another look and feel option for displaying the detection indicator.

DFX-8 Ultrasonic Thickness Gauge 125 10.10 Polarity The DFX-8 is equipped with an option to select the polarity, or phase +/-, fo

DFX-8 Ultrasonic Thickness Gauge 9 Selecting the Transducer Type 1) Press the OK or ESC keys to display the factory list of transducer types (by diam

Dakota Ultrasonics 126 Notice the +/- positions in the diagram. The positive phase is everything above the horizontal center line, and the negativ

DFX-8 Ultrasonic Thickness Gauge 127 Note: Before toggling the Polarity, the DFX-8 should be set to the RF display view option. The RF view will giv

Dakota Ultrasonics 128 1) Press the MENU key once to activate the menu items tab. Press the MENU key multiple times to tab right and the ESC key mul

DFX-8 Ultrasonic Thickness Gauge 129 1) Press the MENU key once to activate the menu items tab. Press the MENU key multiple times to tab right and t

Dakota Ultrasonics 130 1) Press the MENU key once to activate the menu items tab. Press the MENU key multiple times to tab right and the ESC key mul

DFX-8 Ultrasonic Thickness Gauge 131 1) Press the MENU key once to activate the menu items tab. Press the MENU key multiple times to tab right and t

Dakota Ultrasonics 132 8) Finally, press the MEAS key to return to the measurement screen and begin taking readings. 10.15 Freeze & Capture The

DFX-8 Ultrasonic Thickness Gauge 133 7) Use the LEFT and RIGHT arrow keys multiple times on the right button wheel to toggle the CAPTURE on/off. No

134 CHAPTER ELEVEN DATA STORAGE – SETUP, EDIT, & VIEW FILES 11.1 Introduction to Grid and Sequential file formats The DFX-8 is equipped with two d

DFX-8 Ultrasonic Thickness Gauge 135 Grid File Formats Sequential Log Formats Important Note: For the duration of this chapter,

Dakota Ultrasonics 10 4) Press the OK key to overwrite the existing probe type with the newly selected probe type. The zero probe screen will be disp

Dakota Ultrasonics 136 Grid/Seq Log Name : Can contain a combination of up to 20 numeric, alpha, or special characters listed in the first section of

DFX-8 Ultrasonic Thickness Gauge 137 Grid Log Sequential Log 4) Press the ENTER key to display the new Grid or Seq E

Dakota Ultrasonics 138 9) Use the CLR key to backspace if necessary. 10) Repeat steps 6 - 9 until the Grid or Seq Name (File Name) is completed. 11)

DFX-8 Ultrasonic Thickness Gauge 139 3) Use the UP, DOWN, LEFT, & RIGHT arrow keys on the left button wheel to highlight the appropriate alpha

Dakota Ultrasonics 140 Sequential: The sequential file format can be viewed as a file as a single column of up to 512 possible rows (readings), and a

DFX-8 Ultrasonic Thickness Gauge 141 Grid Log Sequential Log 3) GRID LOG: Use the LEFT, & RIGHT arrow keys on

Dakota Ultrasonics 142 Grid Log Sequential Log 1) Use the UP and DOWN arrow keys on the left button wheel to scroll

DFX-8 Ultrasonic Thickness Gauge 143 SEQ LOG: Use the UP, DOWN, LEFT, & RIGHT arrow keys on the left button wheel to highlight the appropriate

Dakota Ultrasonics 144 Selecting the Auto Increment Direction The Auto Increment feature gives the user the ability to specify which direction to adv

DFX-8 Ultrasonic Thickness Gauge 145 Saving a Grid Once all the parameters are set, the user has the option of saving or canceling the new grid.

DFX-8 Ultrasonic Thickness Gauge 11 2) Press the OK key to perform the automatic probe zero, or ESC key to cancel the zero operation. 3) The screen

Dakota Ultrasonics 146 Grid Log Sequential Log 3) Press the OK key to save the New Grid or Seq Log, or the ESC key to

DFX-8 Ultrasonic Thickness Gauge 147 Key Feature: When the DFX-8 is displaying a “grid log”, pressing the OK key will initiate an advance to row numb

Dakota Ultrasonics 148 11.4 Viewing stored readings It is sometimes necessary to go back and view the stored readings and B-Scans using the DFX-8 with

DFX-8 Ultrasonic Thickness Gauge 149 4) The user may opt to clear a specific reading and save a new one at any time. Press the CLR key in the approp

Dakota Ultrasonics 150 3) Press the ENTER key to display the File List Box. 4) Use the UP and DOWN arrow keys on the left button wheel to scroll

DFX-8 Ultrasonic Thickness Gauge 151 3) Press the ENTER key to activate the confirmation screen. 4) Press the OK key to delete All Files from memory,

Dakota Ultrasonics 152 11.6 Editing a Grid (File) Once a grid has been created and saved to memory, the user can edit the Name, Comments, or Increment

DFX-8 Ultrasonic Thickness Gauge 153 5) Press the ENTER key to activate the Alpha Edit box – Only used when editing the NOTE. 6) Use the UP, DOWN,

Dakota Ultrasonics 154 11) Press the OK key to save the changes or the ESC key to cancel editing the file parameters. 12) Press the MEAS key to r

DFX-8 Ultrasonic Thickness Gauge 155 the DATA menu is highlighted and displaying the submenu items. Alternatively, press the LEFT and RIGHT arrow k

Dakota Ultrasonics 12 4) Press the UP and DOWN arrow keys on the left button wheel to scroll through the sub menu items until ZERO PROBE is highligh

Dakota Ultrasonics 156 7) Press the MEAS key to return to the measure screen. 11.8 Closing an active File - Close A user might not have a current req

DFX-8 Ultrasonic Thickness Gauge 157 3) Press the ENTER key to close the active file. Note: Following the key press, the CLOSE text will be grayed

158 CHAPTER TWELVE SETUPS – CREATE, STORE, EDIT, & RECALL 12.1 Introduction to Setups Often times, users are faced with a variety of tasks and app

DFX-8 Ultrasonic Thickness Gauge 159 Opening a Setup 1) Press the MENU key once to activate the menu items tab. Press the MENU key multiple times t

Dakota Ultrasonics 160 5) Press the ENTER key to activate the confirmation screen. 6) Press the OK key to load the setup from memory. 7) Press the ME

DFX-8 Ultrasonic Thickness Gauge 161 Saving a Setup 1) Press the MENU key once to activate the menu items tab. Press the MENU key multiple times to

Dakota Ultrasonics 162 5) When the parameter to edit is highlighted, press the ENTER key to activate the Alpha Edit Box. 6) Use the

DFX-8 Ultrasonic Thickness Gauge 163 11) Use the UP and DOWN arrow keys on the left button wheel to scroll through the setups until the target loc

Dakota Ultrasonics 164 1) Press the MENU key once to activate the menu items tab. Press the MENU key multiple times to tab right and the ESC key mul

DFX-8 Ultrasonic Thickness Gauge 165 6) Press the OK key to delete the Setup File. 7) Finally, press the MEAS key to return to the measurement scree

DFX-8 Ultrasonic Thickness Gauge 13 Using a Known Thickness Note: Be sure that the probe zero procedure has been performed prior to performing this

Dakota Ultrasonics 166 Using the Default Setup 1) Press the MENU key once to activate the menu items tab. Press the MENU key multiple times to tab r

DFX-8 Ultrasonic Thickness Gauge 167 12.6 Selecting a Language The DFX-8 is equipped with a language option. Currently, only a few languages supporte

168 CHAPTER THIRTEEN SOFTWARE, FILE TRANSFER, & UPGRADES 13.1 Computer System Requirements DakView will run on many different operating systems:

DFX-8 Ultrasonic Thickness Gauge 169 13.4 Using the XFER menu (DFX-8) The XFER menu of the DFX-8 will be used in conjunction with the DakView PC softw

Dakota Ultrasonics 170 Selecting Storage Device 1) Press the MENU key once to activate the menu items tab. Press the MENU key multiple times to

DFX-8 Ultrasonic Thickness Gauge 171 Copying Files Between Storage Devices 1) Press the MENU key once to activate the menu items tab. Press the MEN

Dakota Ultrasonics 172 5) Press the ENTER key to either transfer ALL files, or display the Individual List of files. 6) Use the UP and DOWN arrow

DFX-8 Ultrasonic Thickness Gauge 173 1) Press the MENU key once to activate the menu items tab. Press the MENU key multiple times to tab right an

174 APPENDIX A - VELOCITY TABLE Material sound velocity in/us sound velocity m/s Aluminum 0.2510 6375 Beryllium 0.5080 12903 Brass 0.1730 43

DFX-8 Ultrasonic Thickness Gauge 175 Tin 0.1310 3327 Titanium 0.2400 6096 Tungsten 0.2040 5182 Uranium 0.1330 3378 Water 0.0580 1473 Zinc 0.16

Dakota Ultrasonics 14 4) Press the ENTER key to display the Digits Edit Box. 5) Press the UP and DOWN arrow keys on the left button wheel to scroll

176 APPENDIX B - SETUP LIBRARY Num Name Comment 1 Gn/AGC Velocity 1 Enter Custom Name 2 … 3 … 4 … 5 … 6 … … …

177 WARRANTY INFORMATION  Warranty Statement  Dakota Ultrasonics warrants the DFX-8 against defects in materials and workmanship for a period of t

PCSoftware&FirmwareNote:Allsoftwaredownloadsandupgradesareavailableonourwebsiteatnoadditionalcharge.Take

DFX-8 Ultrasonic Thickness Gauge 15 1) Press the MULTI MODE key once to activate the measurement mode options. 2) Use the UP and DOWN arrow keys on

Dakota Ultrasonics 16 6) Use the UP and DOWN arrow keys on the left button wheel to scroll through the sub menu items until ZERO COATING is highlig

DFX-8 Ultrasonic Thickness Gauge 17 Known Coating Velocity If the coating velocity is known, the user may wish to simply enter the velocity number in

Dakota Ultrasonics 18 8) Finally, press the MEAS key to return to the measurement screen and begin taking readings. Known Coating Thickness When t

DFX-8 Ultrasonic Thickness Gauge 19 corner of the display, is fully lit and stable. Press the MENU key once to activate the menu items tab. Press the

Dakota Ultrasonics 20 coating thickness sample. If the thickness is not correct, repeat the steps above. 2.9 Measure The DFX-8 is now ready to measu

DFX-8 Ultrasonic Thickness Gauge 21 DIGITS: Displays the digital thickness value using a large font size. This view is useful when the DFX-8 is bei

Dakota Ultrasonics 22 1) Press the MEAS key once to activate the measure menu items. Press the MEAS key multiple times to move right and the ES

DFX-8 Ultrasonic Thickness Gauge 23 1) Press the ENTER key to display the digits edit box. 2) Press the UP and DOWN arrow keys to scroll the highlight

Dakota Ultrasonics 24 RF View Rectified (RECT) View Digits View B-Scan View In the upper left corner of

25 CHAPTER THREE KEYBOARD, MENU, & CONNECTOR REFERENCE 3.1 Menu Key (Operation & Sub Menus) The Menu key activates the primary menu

CHAPTER ONE INTRODUCTION ... 1CHAPTER TWO QUICK STARTUP GUIDE ...

Dakota Ultrasonics 26 Activating and Getting Around in the Menu Items 1) Press the MENU key once to activate the menu items tab. Press the MENU key

DFX-8 Ultrasonic Thickness Gauge 27 3.2 Probe – Menu ZERO PROBE: The DFX-8 is zeroed in much the same way that a mechanical micrometer is z

Dakota Ultrasonics 28 COATING 1PT: Performs a single point coating calibration. This option allows the user to automatically calculate the velocity

DFX-8 Ultrasonic Thickness Gauge 29 3.5 TUNE – Menu MEASURE MODE: Toggles a variety of unique measurement modes for different application

Dakota Ultrasonics 30 3.6 GT1 – Menu GATE1: Gates allow the user to view a specific measurement range, or sections of the waveform, and igno

DFX-8 Ultrasonic Thickness Gauge 31 3.8 GT3 – Menu GATE3 WIDTH: This feature allows the user to set the overall width of the gate, in terms

Dakota Ultrasonics 32 3.10 DATA – Menu NEW: Allows the user the ability to create a new alpha numeric grid, or sequential log file with auto

DFX-8 Ultrasonic Thickness Gauge 33 ALARM HIGH: Gives the user the ability to set the HI limit parameter. If the measurement exceeds this value, a r

Dakota Ultrasonics 34 STORAGE: Enables the user to select which SD memory card to use for storage. Note: if no card exists in the external reader

DFX-8 Ultrasonic Thickness Gauge 35 The Wheel Keys are used to navigate through the menus, increase/decrease values, and toggle specific function keys

Dakota Ultrasonics 36 The FREEZE key is used to freeze the display for evaluation/review of what’s currently on the display. It is also used in conju

DFX-8 Ultrasonic Thickness Gauge 37 arrow keys to scroll through the Hot Menu items. Alternatively, the MEAS & ESC keys can be used to scroll thr

38 3.26 Top & Bottom End Caps The top & bottom end panels are where all connections are made to the DFX-8. The diagram above shows the la

DFX-8 Ultrasonic Thickness Gauge 39 Alarms Connection (LEMO 1 – 5 pin) Refer to Diagram: The RS-232 connector is a 5 pin female Lemo 1 connector. Thi

40 CHAPTER FOUR PRINCIPALS OF ULTRASONIC MEASUREMENT 4.1 Time versus thickness relationship Ultrasonic thickness measurements depend on measuring the

DFX-8 Ultrasonic Thickness Gauge 41 through air efficiently. By using a liquid couplant between the transducer and test piece the amount of ultrasoun

Dakota Ultrasonics 42 V-Path Correction Dual element delay line transducers have two piezoelectric elements mounted at an angle on one end of the dela

DFX-8 Ultrasonic Thickness Gauge 43 Dual Element Transducer in Echo to Echo mode Echo-Echo Verify Mode – Thru-Verify (E-EV) The echo-echo verify mode

Dakota Ultrasonics 44 Pulse-Echo Temperature Compensated Mode – Temp Comp (PETP) This is a custom mode that combines pulse-echo and electronic zero t

45 CHAPTER FIVE SELECTING THE MEASUREMENT MODE 5.1 The setup library The DFX-8 contains 64 user configurable preset locations to store custom setups f

CHAPTER ONE INTRODUCTION The Dakota Ultrasonics model DFX-8 is both, an ultrasonic thickness gauge, as well as a flaw detector. Since the DFX-8 is

Dakota Ultrasonics 46 Thru Paint & Coatings Often times, users will be faced with applications where the material will be coated with paint or som

DFX-8 Ultrasonic Thickness Gauge 47 Restricted access Measuring materials with extreme curvatures or restricted access, higher frequencies with smalle

48 CHAPTER SIX MAKING MEASUREMENTS The steps involved in making measurements are detailed in this section. The following sections outline how to setu

DFX-8 Ultrasonic Thickness Gauge 49 In this first example the transducer was automatically identified: Probe Automatically Recognized 1) Press the O

Dakota Ultrasonics 50 4) Wipe all couplant from the transducer face and proceed to the Probe Zero section that follows. In this second example the

DFX-8 Ultrasonic Thickness Gauge 51 7) Press the ENTER key to select the transducer type and display overwrite existing probe screen. 8) Press the OK

Dakota Ultrasonics 52 Performing an Auto Probe Zero (Off Block) Coating Probe Identified Coating Probe Not Identif

DFX-8 Ultrasonic Thickness Gauge 53 Performing a Manual Probe Zero (On Block) Note: When the zero probe option is set to manual, the probe zero dis

Dakota Ultrasonics 54 Coating Probe Identified Coating Probe Not Identified 5) Press the ENTER key to display the

DFX-8 Ultrasonic Thickness Gauge 55 greater accuracy over small ranges by calculating the probe zero and velocity. The DFX-8 provides four simple met

2 CHAPTER TWO QUICK STARTUP GUIDE Turn the DFX-8 on and off using the switch located on the bottom right corner of the keypad. When DFX-8 is initiall

Dakota Ultrasonics 56 4) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll the highlighted value. 5) Press the

DFX-8 Ultrasonic Thickness Gauge 57 Known Thickness Sometimes the sound velocity of a material is unknown. In this case a sample with one or two know

Dakota Ultrasonics 58 displaying the submenu items. Alternatively, press the LEFT and RIGHT arrow keys multiple times using the left button wheel.

DFX-8 Ultrasonic Thickness Gauge 59 sample close to .250” (6.35mm), followed by a two point calibration close to .080” (2.03mm). When a two point cal

Dakota Ultrasonics 60 4) Press the ENTER key to display the Digits Edit Box. 5) Press the UP and DOWN arrow keys multiple times using the left butt

DFX-8 Ultrasonic Thickness Gauge 61 Selecting a Basic Material Type 1) Press the MENU key once to activate the menu items tab. Press the MENU key mu

Dakota Ultrasonics 62 5) Press the ENTER key to overwrite the material type and display the menu items with the new material type selected. 6) Final

63 CHAPTER SEVEN USING THE DISPLAY OPTIONS A key feature of the DFX-8 is the ability to toggle between four different display options; Digits, RF, REC

Dakota Ultrasonics 64 7.1 Display Views DIGITS The Digits view is a basic digital thickness gauge look and feel. The larger digits make it much eas

DFX-8 Ultrasonic Thickness Gauge 65  Gain Setting (VLOW, LOW, MED, HI, VHI) E. Digital Material Thickness Value – Extra large font size for viewing

DFX-8 Ultrasonic Thickness Gauge 3 In order to understand how to operate the DFX-8, it’s best to start off with an understanding of what it is we’re

Dakota Ultrasonics 66 the diagram above, if the material thickness was actually 1.75”, the underside of the material would not be viewable according t

DFX-8 Ultrasonic Thickness Gauge 67 Radio Frequency (RF) A-Scan The RF mode shows the waveform in a similar fashion to an oscilloscope. It shows bot

Dakota Ultrasonics 68 E. Gate – An electronic feature that allows the user to monitor signals inside the boundaries of the gate settings. The height

DFX-8 Ultrasonic Thickness Gauge 69 Rectified (RECT) A-Scan The RF mode shows the waveform in a similar fashion to an oscilloscope. It shows both th

Dakota Ultrasonics 70 known as the threshold, and controls the sensitivity of the reflections that trigger a detection from the opposite surface of th

DFX-8 Ultrasonic Thickness Gauge 71 7.2 Changing Display Options The following procedure outlines how to select or toggle display options: Changing

Dakota Ultrasonics 72 7.3 Adjusting the display This section will cover the procedures for adjusting the viewable range, or area, of the display, in t

DFX-8 Ultrasonic Thickness Gauge 73 Adjusting Delay (B-Start) using the Hot Menus 1) Press the MEAS key once to activate measure menu items. P

Dakota Ultrasonics 74 7) Press the OK key to return to the measurement screen, or ESC to cancel entering the DELAY. 8) Finally, press the MEAS key to

DFX-8 Ultrasonic Thickness Gauge 75 3) Alternatively, press the ENTER key to display the Digits Edit Box. 4) Press the UP and DOWN arrow key

Dakota Ultrasonics 4 F. Scan Bar – Another view of material thickness in a deflection style horizontal bar. This is a visual tool that would enable

76 Adjusting the B-Scan Speed The DFX-8 has the capability to adjust the scrolling speed of the time based B-Scan displayed in the gauge. The procedu

DFX-8 Ultrasonic Thickness Gauge 77 7) Repeat steps 5 & 6 until the SPEED is correctly displayed. 8) Press the OK key to set the speed and return

Dakota Ultrasonics 78 flaws. In any case, the adjustable gain feature offers the user some additional options to resolve and overcome application iss

DFX-8 Ultrasonic Thickness Gauge 79 The user can also access and adjust the gain from the tabbed menus. However, this method is more tedious than mak

Dakota Ultrasonics 80 5) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll the highlighted value. 6) Press t

DFX-8 Ultrasonic Thickness Gauge 81 2) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll the Step size. 3) Pres

Dakota Ultrasonics 82 Adjusting the Thresholds using the Hot Menus 1) Press the MEAS key once to activate measure menu items. Press the MEAS key mu

DFX-8 Ultrasonic Thickness Gauge 83 5) Press the LEFT and RIGHT arrow keys multiple times using the left button wheel to scroll the highlighted valu

Dakota Ultrasonics 84 2) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll through the sub menu items until THRE

DFX-8 Ultrasonic Thickness Gauge 85 7.6 Understanding the features of the Gate Important: It is recommended to spend some time in this section. The

DFX-8 Ultrasonic Thickness Gauge 5 2.2 Gauge Type Power up the DFX-8, by pressing the on/off key located in the bottom right corner of the keypad.

Dakota Ultrasonics 86 pulse, or in the material, the gate can be moved to the right of the noise and block the unwanted noise. Gates 2 and 3 will aut

DFX-8 Ultrasonic Thickness Gauge 87 Activating the gates:  Automatically: The gates are automatically activated, when a measurement mode is selecte

Dakota Ultrasonics 88 7.7 Gates The DFX-8 is equipped with 3 gates, as explained in the previous section. One gate is active at all times in every m

DFX-8 Ultrasonic Thickness Gauge 89 Example of Surface or Transducer Noise Noise Blocked The diagram

Dakota Ultrasonics 90 Note: This is a combined procedure that works the same for any of the features associated with the gates, regardless of which

DFX-8 Ultrasonic Thickness Gauge 91 3) Alternatively, if the correct (Ж) is not being displayed, press the ENTER key to display the List Box. 4) Us

Dakota Ultrasonics 92 Note: This is a coarse adjustment. It’s the fastest and easiest way to increment, decrement, or toggle the status however it d

DFX-8 Ultrasonic Thickness Gauge 93 4) Alternatively, press the ENTER key to display the Digits Edit Box. 5) Press the UP and DOWN arrow keys m

94 CHAPTER EIGHT THRU PAINT MEASUREMENT TECHNIQUE 8.1 Introduction to Thru Paint Measurement The principle behind thru paint measurement is by measuri

DFX-8 Ultrasonic Thickness Gauge 95 mode button on the keypad. The DFX-8 has been programmed to identify the modes available to a specific transducer