Checkline TI-MVX User Manual

TABLE OF CONTENTS

CHAPTER ONE: INTRODUCTION ..............................................................................2

CHAPTER TWO:QUICK STARTUP GUIDE................................................................3

CHAPTER THREE:KEYBOARD, MENU, & CONNECTOR REFERENCE................12

CHAPTER FOUR: PRINCIPALS OF ULTRASONIC MEASUREMENT......................23

CHAPTER FIVE: SELECTING THE MEASUREMENT MODE ..................................26

CHAPTER SIX: MAKING MEASUREMENTS ............................................................29

CHAPTER SEVEN: USING THE A-SCAN & B-SCAN DISPLAYS.............................37

CHAPTER EIGHT:THRU PAINT MEASUREMENT TECHNIQUE.............................55

CHAPTER NINE: ADDITIONAL FEATURES OF THE MVX.......................................58

CHAPTER TEN:DATA STORAGE – SETUP, EDIT, & VIEW GRIDS.........................64

CHAPTER ELEVEN: SETUPS – CREATE, STORE, EDIT, & RECALL .....................74

CHAPTER TWELVE: USING THE UTILITY SOFTWARE..........................................78

APPENDIX A:VELOCITY TABLE...............................................................................79

APPENDIX B: SETUP LIBRARY................................................................................80

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APPENDIX B: SETUP LIBRARY

Num Name Comment 1 Gn/AGC Velocity

1 STEEL BASIC 45 0.2330 in/µSec 2 STEEL THRU PNT STD _ 5MHZ HD 15 0.2330 in/µSec 3 STEEL THRU PNT EXT _ 3MHZ HD 14 0.2330 in/µSec 4 ALUMINUM W/GATE _7.5MHZ 45 0.2510 in/µSec 5 PLASTIC W/GATE THK _ 1MHZ CPZT 45 0.0940 in/uSec 6 PLASTIC BASIC _ 2.25MHZ 45 0.0940 in/µSec

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CHAPTER ONE: INTRODUCTION

The CHECK-LINE model TI-MVX is a visual A / B scan ultrasonic thickness gauge. Based on the same operating principles as SONAR, the TI-MVX is capable of measuring the thickness of various materials with accuracy as high as ± 0.001 inches, or ± 0.01 millimeters. The principle advantage of ultrasonic measurement over traditional methods is that ultrasonic measurements can be performed with access to only one side of the material being measured.

CHECK-LINE maintains a customer support resource in order to assist users with questions or difficulties not covered in this manual.Customer support may be reached at any of the following:

■ ELECTROMATIC Equip’t Co.Inc.

■ Telephone:(800) 645-4330 or (516) 295-4300

■ Facsimile: (516) 295-4399

■ http://www.checkline.com

1.1 Disclaimer

Inherent in ultrasonic thickness measurement is the possibility that the instrument will use the second rather than the first echo from the back surface of the material being measured.This may result in a thickness reading that is TWICE what it should be. Responsibility for proper use of the instrument and recognition of this phenomenon rest solely with the user of the instrument.

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APPENDIX A -VELOCITY TABLE

Material sound velocity sound velocity

in/us m/s

Aluminum 0.2510 6375 Beryllium 0.5080 12903 Brass 0.1730 4394 Bronze 0.1390 3531 |Cadmium 0.1090 2769 Columbium 0.1940 4928 Copper 0.1830 4648 Glass (plate) 0.2270 5766 Glycerine 0.0760 1930 Gold 0.1280 3251 Inconel 0.2290 5817 Iron 0.2320 5893 Cast Iron 0.1800 (approx) 4572 Lead 0.0850 2159 Magnesium 0.2300 5842 Mercury 0.0570 1448 Molybdenum 0.2460 6248 Monel 0.2110 5359 Nickel 0.2220 5639| Nylon 0.1060 (approx)2692 Platinum 0.1560 3962 Plexiglas 0.1060 2692 Polystyrene 0.0920 2337 PVC 0.0940 2388 Quartz glass 0.2260 5740 Rubber vulcanized 0.0910 2311 Silver 0.1420 3607 Steel (1020) 0.2320 5893 Steel (4340) 0.2330 5918 Steel Stainless” 0.2230 5664 Teflon 0.0540 1372 Tin 0.1310 3327 Titanium 0.2400 6096 Tungsten 0.2040 5182 Uranium 0.1330 3378 Water 0.0580 1473 Zinc 0.1660 4216 Zirconium 0.1830 4648

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CHAPTER TWO: QUICK STARTUP GUIDE

Turn the TI-MVX on and off using the switch located on the bottom right corner of the keypad.When TI-MVX is initially turned on, a flash logo and blinking lights will be displayed prior to entering into the main measurement screen. Note: This section is primarily written as a basic startup guide only.

2.1 Selecting The Transducer T ype

The first step in using the TI-MVX is to select the transducer type according to frequency and diameter.By selecting the transducer type from a predefined list, the TI-MVX can recall specific properties about the transducer.Note: Once the transducer has been selected, the TI-MVX will store and recall this transducer type every time the TI-MVX is powered on/off.The type will only change if the user physically selects another transducer type from the list, or selects a previously saved setup.Therefore, if you have previously gone through this section and selected the transducer you are using, proceed to the next section.Use the following steps to select your transducer type.

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 multiple times to tab left until the PROBE menu is highlighted and displaying the submenu items.

2) Use the UP and DOWN arrow keys to scroll through the sub menu items until TYPE is highlighted.

3) Press the ENTER key to display the list of transducer types.

4) Press the UP and DOWN arrow keys to scroll through the transducer list until the appropriate type is highlighted.

5) Press the ENTER key to display the confirmation screen.

6) Press the OK key to select the transducer and return to the menu screen, or ESC to cancel the selecting the transducer.

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CHAPTER TWEL VE: USING THE UTILITY SOFTWARE

12.1 Computer System Requirements

MVXcomm will run on many different operating systems:Windows 95, Windows 98 (1st or 2nd edition), Windows NT 4.0 with Service Pack 5, Windows ME, Windows XP, Windows 2000 Professional, Windows 2000 Server, or Windows 2000 Advanced Server operating systems running on Intel or AMD hardware.

A Pentium 166MHz or faster processor with at least 32 megabytes of physical RAM is required.You should have 40 megabytes of free disk space before attempting to install TI-MVXcomm.

MVXcomm requires an available communications port in order to transfer data to and from the TI-MVX.MVXcomm supports COM1, COM2, COM3, and COM4.

USB to Serial Converter

Some newer laptop computers do not have standard serial ports.In this case it is possible to use a USB to Serial converter.If a serial to USB cable is needed,

Contact CHECK-LINE (pt# N-402-0510).

12.2 Installing TI-MVXcomm

MVXcomm comes on a CD-ROM with an automatic installer program.Place the CD in your computer’s CD tray and close the door.Open the CD-ROM by double clicking on the My Computer ICON, then double click on the CD. Finally, double click on the SETUP icon to begin the installation.

Refer to the help section in MVXcomm, for the complete operating manual, setup, and operation.

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2.2 Probe Zero & Calibration

The next step is to calibrate the TI-MVX to the material and transducer being used. If a sound velocity is not known, the TI-MVX can be calibrated to a known thickness sample.This demo will briefly explain both of these techniques.

In either case, the transducer MUST be zeroed on the probe zero disk (battery cover located on the top of the unit as follows:

1) Apply a drop of couplant on the transducer and place the transducer in steady contact with the probe zero disk, and obtain a steady reading.

2) Assuming the probe menu is still displayed from the previous type selection, use the UP and DOWN arrow keys to scroll through the sub menu items until ZERO TRANSDUCER is highlighted.

3) Press the ENTER key to display the confirmation screen.

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13) Press the OK key to save the Setup, or ESC to cancel saving the Setup.

14) Finally, press the MEAS key to return to the measurement screen. Note: The Name and Comments of the Setup can be edited at any time by sim-

ply repeating the Save Setup routine described above. Therefore, the Save Setup function can also be considered an Edit Function.

11.4 Using the Default Setup

The default setup feature was added to the TI-MVX to use, as a last resort, if there are no setups stored in the gauge –factory or otherwise. The only time this might possibly occur is if the setup file in the TI-MVX was somehow corrupted, and the user does not have access to a computer to re-load the factory setups back into the TI-MVX. This gives the user the ability to load and modify a basic setup as follows:

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 multiple times to tab left until the SETUP menu is highlighted and displaying the submenu items.

2) Use the UP and DOWN arrow keys to scroll through the sub menu items until DEFAULT SETUP is highlighted.

3) Press the ENTER key to load the Default Setup and display the Warning Message Box.

Important Note: Remember to perform a probe zero function prior to measuring.The default setup clears the probe zero value.

4) Press the OK key to return to the measurement screen.

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4) Press the OK key to complete the probe zero function, or ESC key to cancel the probe zero function.

5) Remove the transducer from the probe zero disk, and proceed to the calibration section.

Note: The value that is displayed will change depending on the current velocity setting in the TI-MVX.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.

Known Velocity

If the material velocity is known, the user may wish to simply enter the velocity number into the TI-MVX, rather than have the TI-MVX calculate the velocity value on using a know thickness.The steps for entering the velocity are outlined below:

Using a Known Material Velocity

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 multiple times to tab left until the CAL menu is highlighted and displaying the submenu items.

2) Use the UP and DOWN arrow keys to scroll through the sub menu items until VELOCITY is highlighted.

3) Press the ENTER key to display the Digits Edit Box.

4) Press the UP and DOWN arrow keys to scroll the highlighted value.

5) Press the LEFT and RIGHT arrow keys to scroll the digit locations.

6) Repeat steps 4 & 5 until the velocity number is correctly displayed.

7) Press the OK key to set the velocity and return to the menu screen, or ESC to cancel entering the velocity.

8) Finally, press the MEAS key to return to the measurement screen and begin taking readings.

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2) Use the UP and DOWN arrow keys to scroll through the sub menu items until SAVE is highlighted.

3) Press the ENTER key to display the Save Setup Parameters List Box.

4) Press the UP and DOWN arrow keys to scroll the Name and Note parameters.

5) When the parameter to edit is highlighted, press the ENTER key to activate the Alpha Edit Box.

6) Use the UP, DOWN, LEFT, and RIGHT arrow keys to scroll through the characters, the ENTER key to select characters, and the CLR key to backspace through the characters, until the Name or Note fields have been edited.

7) Press the OK key to return to the Save Setup Parameters List Box.

8) If both parameters will be edited, repeat steps 4 – 7.

9) Use the UP and DOWN arrow keys to scroll to and highlight SAVE SETUP.

10) Press the ENTER key to activate the Setup List Box.

11) Use the UP and DOWN arrow keys to scroll through the setups until the target location to save the Setup is highlighted.

12) Press the OK key to activate the confirmation screen.

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Known Thickness

Sometimes the sound velocity of a material is not known. In this case a sample with a known thickness can be used to determine the sound velocity.It would be very handy to carry a set of mechanical calipers to use in conjunction with the TI-MVX for calibration in the field:

Using a Known Thickness Note: Be sure that the probe zero procedure has been performed prior to per-

forming this calibration 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.

2) Apply a drop of couplant on the transducer and place the transducer in steady contact with the sample or actual test material. Be sure that the reading is stable and the repeatability indicator, in the top left corner of the display, is fully lit and stable.Press the 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 tab left until the CAL menu is highlighted and displaying the submenu items.

3) Use the UP and DOWN arrow keys to scroll through the sub menu items until ONE POINT is highlighted.

4) Press the ENTER key to display the Digits Edit Box.

5) Press the UP and DOWN arrow keys to scroll the highlighted value.

6) Press the LEFT and RIGHT arrow keys to scroll the digit locations.

7) Repeat steps 5 & 6 until the known thickness value is correctly displayed.

8) Press the OK key to calculate the velocity and return to the menu screen, or ESC to cancel entering the velocity.

9) Finally, press the MEAS key to return to the measurement screen and begin taking readings.

Note: CHECK YOUR CALIBRATION! Place the transducer back on the calibration point.The thickness reading should now match the known thickness.If the thickness is not correct, repeat the steps above.

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2) Use the UP and DOWN arrow keys to scroll through the sub menu items until OPEN is highlighted.

3) Press the ENTER key to display the Setup List Box.

4) Use the UP and DOWN arrow keys to scroll through the setups until the target setup is highlighted.

5) Press the ENTER key to activate the confirmation screen.

6) Press the OK key to load the setup from memory.

7) Press the MEAS key to return to the measure screen.

11.3 Saving a Setup

Once the TI-MVX parameters and features have be adjusted for an 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.

It is sometimes necessary to rename a previously saved setup, or add additional comments about a particular setup.The setup name may have been entered incorrectly, or the user needs to use the setup for a completely different project. An inspectors name, or other comments about the project may also be required for additional documentation purposes.The following procedures outline the necessary steps for saving and editing a setup:

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Basic Material Type

If the material velocity is unknown, and a sample thickness cannot be taken from the material, the user may opt to choose a basic material type from a list with approximate velocity numbers.It’s important to note that these velocities will not always be an exact representation of the material being tested.Use these values only if a close approximation is acceptable.Follow the steps below to select a basic material type:

2) Use the UP and DOWN arrow keys to scroll through the sub menu items until MATERIAL is highlighted.

3) Press the ENTER key to display the list of material types.

4) Press the UP and DOWN arrow keys to scroll through the material list until the appropriate material is highlighted.

5) Press the ENTER key to display the confirmation screen.

6) Press the OK key to select the material and return to the menu screen, or ESC to cancel the material selection.

7) Finally, press the MEAS key to return to the measurement screen and begin taking readings.

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CHAPTER ELEVEN: SETUPS – CREATE, STORE, EDIT, & RECALL

11.1 Introduction to Setups

Often times, users are faced with a variety of tasks and applications that are sometimes similar, but often times very different.With a standard thickness gauge, the user would have to recalibrate for each individual application respectively.With all the features of the TI-MVX, the number of potential applications also increases based on ability alone.This is pr imarily in reference to the addition of those very difficult applications, where a standard thickness gauge would not be feasible, or capable of accomplishing the tasks.

The increased number of features and parameters also adds to the overall setup time, or amount of time to set up marginal applications with perfection and understanding. Because of the additional time involved, the TI-MVX has been equipped with the ability to save these setups to memory and be recalled at any time.The TI-MVX can store 64 custom setups. These setups can be bi-directionally transferred to and from a PC.Therefore, the user can save as many setups as necessary for all of the individual applications.This saves a great deal of time and knowledge for future inspections of the same job or project.This feature also eliminates error between two or more users during the setup and calibration process.

11.2 Opening a Setup

The TI-MVX is loaded with a number of setups from the factory.These setups can be opened, edited, and saved to any one of 64 setup locations.If a factory setup is written over, the user can simply reload the default factory setups at anytime using the utility software included with the TI-MVX.The factory setups are general setups Only. However, they may serve as an excellent starting point, requiring only minor adjustments to work for custom applications. It is recommended that user customized setups be saved to an empty location, and save the factory setups for the purpose of a general starting point. The following procedures outline how to open factory and custom setups:

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2.3 Measure

The TI-MVX is now ready to measure.There are four different measurement view options, each with a specific purpose.The steps below outline how to toggle between the different view mode options:

Selecting the Measurement View Option

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 multiple times to tab left until the DISP menu is highlighted and displaying the submenu items.

2) Use the UP and DOWN arrow keys to scroll through the sub menu items until VIEW is highlighted.

3) Use the LEFT and RIGHT arrow keys to scroll the view options.

4) Once the view is displayed, press the MEAS key to return to measurement mode.

RF: Is useful to see exactly what the signal looks like directly around the detect point. Use this view only when viewing smaller ranges (zoomed in) around the detection point.This can be done manually by adjusting the delay and width settings.

RECTIFIED (RECT): Displays the entire range being scanned. This screen is useful to “get the big picture” when viewing wide ranges (zoomed out).The point which is triggering the digital thickness reading (called the detect) is displayed as a vertical dashed line.

BSCAN:The Time Based B-Scan provides the user with a cross sectional view of the material being tested.This mode is useful when there is concern regarding the profile of the blind surface.This can also be a useful view when scanning for pits and flaws.

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2) Use the UP and DOWN arrow keys to scroll through the sub menu items until OPEN is highlighted.

3) Press the ENTER key to display the Grid List Box.

4) Use the UP and DOWN arrow keys to scroll through the grids until the target grid is highlighted.

5) Press the ENTER key to activate the confirmation screen.

6) Press the OK key to load the grid from memory.

7) Press the MEAS key to return to the measure screen.

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DIGITS: Displays the digital thickness value using a larger font size.This view is useful when the TI-MVX is being used as a basic thickness gauge.

Once the view has been selected according to the application requirements, the delay and width of the screen will potentially need to be adjusted, if the view has been set to RF, RECT, or BSCAN. Use the following steps to adjust these settings directly from the measurement screen as follows:

Adjusting the Delay & Width

1) Press the MEAS key once to activate the measure menu items. Press the MEAS key multiple times to move right and the ESC key multiple times to move left, until the either the DELAY or WIDTH cell is highlighted.

2) Use the UP, DOWN, LEFT, or RIGHT arrow keys to scroll the DELAY and WIDTH values.

3) Repeat steps 1 & 2 until the range is correctly being displayed. Alternatively, the DELAY and WIDTH values can be changed using the Digit Edit

Box as follows:

1) Press the MEAS key once to activate measure menu items. Press the MEAS key multiple times to move right and the ESC key multiple times to move left, until the either the DELAY or WIDTH cell is highlighted.

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8) Use the CLR key to backspace if necessary.

9) Repeat steps 6 -8 until the Comments are completed.

10) Press the UP or DOWN arrow key to highlight SAVE CHANGES, and the OK key to activate the confirmation screen.

11) Press the OK to save the changes or the ESC key to cancel editing the grid parameters.

12) Press the MEAS key to return to the measurement screen.

10.7 Changing the active grid (Open)

The user may have transferred grid templates from a PC to the TI-MVX, or setup grids using the TI-MVX at an earlier time.The name of the currently active grid is always displayed at the bottom of the Hot Menu Items in measurement mode. It’s not only important to recognize what grid is currently active, but also be able to change the active grid at any time.The following procedures outline this process:

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 multiple times to tab left until the DATA menu is highlighted and displaying the submenu items.

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2) Press the ENTER key to display the digits edit box.

3) Press the UP and DOWN arrow keys to scroll the highlighted value.

4) Press the LEFT and RIGHT arrow keys to scroll the digit locations.

5) Repeat steps 3 & 4 until the DELAY or WIDTH value is correctly displayed.

6) Press the OK key to set the DELAY and WIDTH value and return to the measure screen, or ESC to cancel entering the DELAY or WIDTH value.

7) Finally, press the MEAS key to return to the measurement screen and begin taking readings.

Note: The DELAY & WIDTH can also be adjusted from the menu tab items. However, using the hot menu keys is the easiest method.

RF RECTIFIED

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10.6 Editing a grid

Once a grid has been created and saved to memory, the user can edit the Comments or Increment Direction at a later time.The following procedures outline this process:

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 multiple times to tab left until the DATA menu is highlighted and displaying the submenu items.

2) Use the UP and DOWN arrow keys to scroll through the sub menu items until EDIT is highlighted.

3) Press the ENTER key to display the Edit List Box.

4) Use the UP and DOWN arrow keys to scroll through the Edit options until NOTE or INCR.DIR is highlighted.

Note: If editing the INCR. DIR, simply use the LEFT or RIGHT arrow keys to scroll NONE, NORTH, EAST, SOUTH, or WEST.Proceed to step 10.

5) Press the ENTER key to activate the Alpha Edit box – Only used when editing the NOTE.

6) Use the UP, DOWN, LEFT, & RIGHT arrow keys to highlight the appropriate alpha characters.

7) Press the ENTER key to select a character and advance to the next field of the Comments.

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B-SCAN DIGITS

In the upper left corner of each of the mode photos above, is the repeatability indicator.The repeatability indicator is represented by six vertical bars and represents how repeatable the measurements are.In regular measurement mode, the TI-MVX makes 4 measurements a second.In scan mode, the TI-MVX makes 32 measurements a second.When the TI-MVX is idle, only the left

vertical bar and the underline will be displayed. However, when the TI-MVX is making a measurement, five or six of the bars should be displayed on the repeatability indicator.If fewer than five bars are showing, the TI-MVX is having difficulty achieving a stable measurement and the thickness value displayed is potentially be unstable.Another thing to note is the vertical broken line in the RF and RECTIFIED photos above.This line represents the actual point of detection. The TI-MVX uses a zero crossing or flank detection method, and presents the actual point of measurement on the display.

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10.5 Deleting a grid Deleting one grid

2) Use the UP and DOWN arrow keys to scroll through the sub menu items until DELETE ONE GRID is highlighted.

3) Press the ENTER key to display the Grid List Box.

4) Use the UP and DOWN arrow keys to scroll through the stored Grids until the target Grid to delete is highlighted.

5) Press the OK key to delete the Grid.

6) Press the MEAS key to return to the measurement screen.

Deleting All Grids

2) Use the UP and DOWN arrow keys to scroll through the sub menu items until DELETE ALL GRIDS is highlighted.

3) Press the ENTER key to activate the confirmation screen.

4) Press the OK key to delete All Grids from memory, or the ESC key to abort.

5) Press the MEAS key to return to the measurement screen.

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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 9 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. Let’s first get familiar with how to move around in these tabs before continuing on to the sub menu functions.This procedure is outlined below:

Activating and Getting Around in the Menu Items

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 multiple times to tab left until the desired tab group is highlighted and displaying the submenu items.

Now that your familiar with activating and moving amongst the tab groups, let’s have a look at how to move around in the sub menu items as follows:

Getting Around in the Sub Menu Items

1) Use the UP and DOWN arrow keys to scroll through the sub menu items until the desired function is highlighted.

2) Depending on which function is highlighted, use the LEFT, RIGHT, and Enter keys to scroll the options or activate the Digit Edit and List Box options.

The sections to follow will provide the user with an explanation of the sub menu functions:

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2) Press the ENTER key to display the Grid View Box.

3) Press the UP, DOWN, LEFT, and RIGHT arrow keys to scroll the target cell cursor to the desired storage location.

5) Press the ENTER key to save the current reading in the highlighted cell location.

6) Abort the Grid View Box by pressing the MEAS key at any time. Note: Every time a reading is saved to memory, a picture of the display is auto-

matically saved with the reading.

10.4 Viewing stored readings and waveforms

It is sometimes necessary to go back and view the stored readings and waveforms using the TI-MVX without a PC. The following procedures outline this process:

1) Press the MEAS key once to activate measure menu items.Press

the MEAS key multiple times to move right and the ESC key multiple times to move left until the LOC cell is

highlighted.

2) Press the ENTER key to display the

Grid View Box.

3) Press the UP, DOWN, LEFT, and

RIGHT arrow keys to scroll the stored readings and corresponding display view. Notice as the cursor is moved to a different cell, the display will be updated with the display view saved with the reading.

4) The user may opt to clear a specific reading and save a new one at any time.

Press the CLR key in the appropriate cell location to clear the reading, take a new measurement, and press the OK key to save the new reading.

5) Abort the Grid View Box by pressing the MEAS key at any time.

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3.2 Probe – Menu

Zero:The TI-MVX is zeroed in much the same way that a mechanical micrometer is zeroed. If the TI-MVX is not zeroed correctly, all of the measurements made using the TI-MVX may be in error by some fixed value.Refer to the section on page 32, for an explanation of this important procedure.

Pulse:The TI-MVX has an adjustable pulse width for both high penetration and resolution applications.The pulse width refers to the duration of time the pulser is on.The options are Spike, Thin, and Wide.Refer to page 58 for a further explanation.

Type: Enables the user to select the type of transducer being used from a chart of transducer types.This provides increased linearity between transducers. Refer to page 30 for a further explanation.

Units:Toggle between English or Metric units.The readout will change from inches to millimeters.

Velocity:Function to calibrate the TI-MVX by setting the velocity to a known material velocity. Refer to page 33 for further info.

One Point:Performs a single point calibration.This option allows the user to automatically calculate the velocity by entering a known sample thickness.Refer to page 33 for further info.

Two Point: Performs a two-point calibration.This option allows the user to automatically calculate the velocity by entering a second known sample thickness. Refer to page 34 for further info.

Material: Select the mater ial velocity from a char t of basic material types, when a known sample thickness, or material velocity cannot be obtained.Refer to page 79 for further info.

3.3 CAL – Menu

Units:Toggle between English or Metric units.The readout will change from inches to millimeters.

Velocity:Function to calibrate the TI-MVX by setting the velocity to a known material velocity. Refer to page 33 for further info.

One Point:Performs a single point calibration.This option allows the user to automatically calculate the velocity by entering a known sample thickness.Refer to page 33 for further info.

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Saving the Grid

Once all the parameters are set, the user has the option of saving or canceling the new grid.

1) Use the UP and DOWN arrow keys to scroll through the new Grid List Items until CREATE NEW GRID? is highlighted.

2) Press the ENTER key to accept the grid parameters, and activate the confirmation screen.

3) Press the OK key to save the New Grid, or the ESC key to cancel the New Grid setup and return to the DATA menu.

4) Press the MEAS key to return to the measurement screen and begin storing readings.

10.3 Storing a reading

Now that a grid has been created, it’s time to make some measurements and store the readings.The following procedures outline this process:

Storing a Reading

1) Press the MEAS key once to activate measure menu items. Press the MEAS key multiple times to move right and the ESC key multiple times to move left until the LOC cell is highlighted.

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+ 29 hidden pages

Checkline TI-MVX User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual