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Panametrics MG2 User Manual

Ultrasonic thickness gages
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USER'S MANUAL
MG2, MG2-XT, MG2-DL
Ultrasonic Thickness Gages
Part No. 910-257C

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Summary of Contents for Panametrics MG2

  • Page 1 USER’S MANUAL MG2, MG2-XT, MG2-DL Ultrasonic Thickness Gages Part No. 910-257C...
  • Page 2 In accordance with European Directive 2002/96/EC on Waste Electrical and Electronic Equipment, this symbol indicates that the product must not be disposed of as unsorted municipal waste, but should be collected separately. Refer to your local Olympus distributor for return and/or collection systems avail- able in your country.

  • Page 3: Table Of Contents

    Calibration (MG2-XT and DL) 3-8 3.6.1 THRU-COAT Calibration (Material).. 3-9 3.6.2 THRU-COAT Calibration ....3-9 3.7 Echo-to-Echo Calibration........3-11 4 Additional MG2 Gaging Features ........ 4-1 4.1 Back Light............4-2 4.2 Freeze Mode............4-4 4.3 Gain Adjust ............4-4 4.4 Material Gain Sensitivity Optimization ....4-5 4.5 Measurement Set..........
  • Page 4 4.13.3 Database ResetE1 (Echo 1) Blank..4-31 4.13.4 Range ..........4-33 4.13.5 Delay..........4-35 4.14 B-Scan ............... 4-36 4.14.1 Using the B-scan Function ....4-38 4.14.2 B-scan Freeze ........4-40 4.14.3 Saving B-scan ........4-41 4.15 DB Grid (DL Models Only)......4-42 MG2 Series...
  • Page 5 5.3 Creating Data Files..........5-4 5.3.1 Standard Editing Commands ....5-4 5.3.2 Creating Files From a Computer ..5-6 5.3.3 Creating Files From the MG2-DL ..5-6 5.4 Opening a File ............. 5-15 5.5 Saving Data ............5-16 5.6 Using the Review ID Mode......... 5-17 5.7 Using Edit ID Mode ..........
  • Page 6 9.4 Turn On and Low Battery Problems ....9-2 9.5 Measurement Problems........9-3 9.6 Self Diagnostics ..........9-4 9.7 Tests ..............9-7 9.8 Repair Service ............. 9-10 9.9 Replacement Parts and Options ......9-10 Appendix I: Sound Velocities MG2 Series...
  • Page 7 Warranty Olympus NDT guarantees MG2 Series Ultrasonic Gages to be free from defects in materials and workmanship for a period of two years (twenty-four months) from date of shipment. The warranty covers...
  • Page 8 Olympus NDT reserves the right to modify all products without incurring responsibility for modifying previously manufactured products. Olympus NDT does not assume liability for the results of particular installations, as these circumstances are not within our control. MG2 Series...

  • Page 9: General Information

    March 2006 910-257C 1 GENERAL INFORMATION Panametrics-NDT MG2 Series Ultrasonic Gages are designed for a wide range of applications including quick spot measurements to determine wall thickness of various structures and measurement of corroded metal. The MG2 series includes: •...
  • Page 10 .001" (.01mm) or .01" (.1mm), and easy calibration for unknown material velocity and/or transducer zero. • MG2-DL - Features include: Quick compensations for transducer temperature changes, fast scan min hold mode with 20 readings/ sec and freeze function, freeze function that instantly freezes dis-...
  • Page 11 March 2006 910-257C Table 1: MG2 Series Features MG2 Series Features MG2-XT MG2-DL Electroluminescent Display Back • • • Lighting • • • Automatic Probe Recognition High Temperature Capabilities • • • Fast Measurement Rate of 20 per • •...
  • Page 12 0.020” (0.50mm) and 25” (635mm) thickness and between -20°C and +500°C in temperature. The MG2 series makes full use of its microprocessor to offer selectable, advanced measurement features. Moreover, the MG2 Series continuously adjusts the receiver setup so that every...
  • Page 13 910-257C measurement is optimized for reliability, range, sensitivity, and accuracy. The MG2-DL built-in datalogger allows a simple method for recording thickness readings and for labeling each point with an identification code, and can store up to 8000 thickness readings, providing an alternative to recording data manually.
  • Page 14 910-257C March 2006 Page 1-6 MG2 Series...

  • Page 15: Basic Operation

    March 2006 910-257C BASIC OPERATION This section demonstrates basic MG2 measurement techniques. The unit has been shipped from the factory set up with the following conditions. STANDARD 0.001 in. or 0.01mm RESOLUTION: SOUND VELOCITY: 0.2260 in/µS or 5.740 mm/µS. (Approximate sound velocity for the carbon steel test bar provided with the gage.) See note below.

  • Page 16: Initial Setup

    Follow this procedure when operating the gage for the first time. Step 1: Plug the transducer into the connector at the top end of the MG2 case. When unplugging a transducer, pull ONLY on the Note: molded plug, NOT on the cable.
  • Page 17 [2ndF], [ ](Setup), then pressing [ ] to highlight units and using [ ] to select English (inches) or metric units. Step 6: Press the [Meas] key. Note: This is not a substitute for doing a standard calibration. MG2 Series Page 2-3...

  • Page 18: Making Measurements

    The gage will operate for at least 150 hours on one set of batteries under normal conditions (not in FAST mode and with backlight off). The battery symbol in the bottom right corner of the display indicates remaining battery life. Page 2-4 MG2 Series...

  • Page 19: Standard Calibration Measurement

    910-257C STANDARD CALIBRATION MEASUREMENT 3.1 Introduction The MG2 calibration procedure adjusts the gage so that it measures accurately on a particular material, using a particular transducer at a particular temperature. Calibration procedures include: Transducer Zero Compensation–Calibrates for the sound transit time in each of the dual transducer delay lines, which varies from unit to unit and with temperature.

  • Page 20: Transducer Zero Compensation

    F], [Cal Zero](Do Zero). The gage will momentarily display the zero calibration value and then go to the measure mode automatically. When measurements are being made on surfaces that are significantly above or below room temperature, Page 3-2 MG2 Series...

  • Page 21: Velocity And Zero Calibration

    Uncouple the transducer from the block and use the [ , and ] slewing keys to enter the thickness of the thin block. Step 9: Press the [MEAS] key to complete the calibration and go to the Measure mode. MG2 Series Page 3-3...

  • Page 22: Material Velocity Calibration

    The block should be approximately as thick as the thickest section to be measured and have flat, smooth, and parallel front and back surfaces. The thickness of the block must be known exactly. Page 3-4 MG2 Series...
  • Page 23 Step 5: Uncouple the transducer and use the [ , and slewing keys to enter the thickness of the standard. Step 6: Press the [MEAS] key to complete the calibration and return to Measure mode. MG2 Series Page 3-5...
  • Page 24 Press [MEAS] to complete the entry and return to the Measure mode. If the gage is turned off before the [MEAS] key is pressed, the velocity will not be updated to the new value, but instead will retain the previous value. Page 3-6 MG2 Series...

  • Page 25: Zero Calibration

    When the thickness reading is stable, press the [ENTER] key. The [ENTER] key will not be accepted if the LOS display flag is on. Step 5: Uncouple the transducer and use the [ , and slewing key to enter the thickness of the standard. MG2 Series Page 3-7...

  • Page 26: Thru-Coat ® Calibration (Mg2-Xt And Dl)

    ® 3.6 THRU-COAT Calibration (MG2-XT and MG2-DL Only) THRU-COAT is a special feature that measures the true metal thickness of coated or paint materials. This feature only requires a single backwall echo and is recommended for applications with heavy corrosion where the outside of the material is painted.
  • Page 27 ® 3.6.1 THRU-COAT (Metal Only) Calibration (MG2-XT and MG2-DL Only) Perform this calibration to calibrate for the sound velocity and zero offset of the metal thickness. This calibration should be used when the user wishes to measure the true metal thickness of material that is coated or painted but on which the exact thickness of the coating is not important.
  • Page 28 Step 7: Couple the transducer to a sample with a known coating thickness when the reading is steady and press [ENTER]. Step 8: Uncouple the transducer from the material and enter the thickness of the coating using the [ , and Page 3-10 MG2 Series...

  • Page 29: Echo-To-Echo Calibration

    3.7 Echo-to-Echo Calibration The Echo-to-Echo measurement feature allows the MG2-XT and MG2-DL to measure remaining wall thickness of painted metal while ignoring the coating thickness. Echo-to-Echo mode refers to measuring from one backwall echo to the next backwall echo. The time interval between these echoes does not include the time through any paint, resin, or organic coating that is present.
  • Page 30 Step 7: Uncouple the transducer from the material and enter the thickness of the block using the [ , and slewing keys. Step 8: Press [MEAS] to complete the calibration. Note: The Echo-to-Echo measurement mode operates only Page 3-12 MG2 Series...
  • Page 31 March 2006 910-257C within the thickness range of 0.100”- 0.500” (2.5 mm - 12.5 mm). MG2 Series Page 3-13...
  • Page 32 910-257C March 2006 Page 3-14 MG2 Series...

  • Page 33: Additional Mg2 Gaging Features

    910-257C ADDITIONAL MG2 SERIES GAGING FEATURES MG2 Series thickness gages have several additional convenient features. The use of these features is not required for basic operation. However, they make the gages more versatile instruments. The following additional features may be accessed directly from the keypad: Tables 4-1A &...

  • Page 34: Back Light

    To switch backlight On/Off: • MG2 and MG2-XT - Press the [Light Bulb] key. • MG2-DL - Press [2 F],[Freeze](LIGHT/LCD). Page 4-2...
  • Page 35 To adjust Contrast: The Contrast adjustment feature allows the MG2 Series thickness gages to adjust the contrast (light or dark) of the display. To adjust the display contrast for the Model MG2 and MG2-XT: Step 1: From Measure Mode, press [2 F][Light Bulb](LCD ADJ).

  • Page 36: Freeze Mode

    910-257C March 2006 To adjust the display contrast for the Model MG2-DL: Step 1: From Measure Mode, press [2 F][FREEZE](LIGHT/ LCD) to turn on the back light and begin contrast adjustment. Step 2: Use the [ ] or [ ] key to adjust contrast.

  • Page 37: Material Gain Sensitivity Optimization

    However, in certain special cases, it is advantageous to modify those fixed limits on sensitivity. The Material Gain Sensitivity Optimization feature of the MG2-XT and MG2-DL optimizes by using actual material noise level measurements rather than fixed gain boost or fixed attenuators. While...

  • Page 38: Measurement Set

    [MEAS] key. 4.5 Measurement Setup The measurement setup menu allows the user to turn on/off many of the additional measurement features of the MG2 Series gages. Measurement setup features include: • Meas Option (MG2-XT and MG2-DL only)

  • Page 39: Meas Option

    • Hold Blank • Measure rate • Cal Lock • ID Overwrite (MG2-DL only) 4.5.1 Meas Option (MG2-XT and MG2-DL Only) The Meas Option allows the user to change among Standard Measurement Mode, Auto Echo-to-Echo Measurement Mode, and Manual Echo-to-Echo Mode (when Waveform Option is activated).

  • Page 40: Units

    ] keys to highlight the MEAS tab. Step 3: Use the [ ] key to highlight Units and the [ ] keys to select English (") or metric (mm). Step 4: Press [MEAS] to return to the Measure Mode. Page 4-8 MG2 Series...

  • Page 41: Resolution

    [Meas] key is pressed to reset the minimum. When Min Mode is selected, the MG2 automatically changes to 20 Hz fast update mode. Max Mode displays live thickness value and recalls the maximum thickness when a LOS (loss of signal) occurs.

  • Page 42: Hold/Blank

    [Meas] key is pressed to reset the maximum. When Max Mode is selected, the MG2 automatically changes to a 20 Hz fast update mode. To select Min/Max: Step 1: Press [2ndF][ ](Setup) to display the setup tabs.

  • Page 43: Measure Rate

    Measure Rate allows the user to display the measurement update rate. The user can select between Normal (4 Hz) and Fast (20 Hz). Note: Changing to the fast update rate will greatly affect the battery life of the MG2 Series thickness gages. To change Measure Rate: Step 1: Press [2ndF][ ](Setup) to display the setup tabs.

  • Page 44: Cal Lock

    Step 4: Press [MEAS] to return to the Measure Mode. 4.5.8 ID Overwrite (MG2-DL Only) ID Overwrite allows the user to lock ID locations so that once a thickness reading is saved at the ID# location, users will be prompted with a message asking if they wish to overwrite the stored thickness value.

  • Page 45: System Setup

    • 36DL PLUS Output 4.6.1 Beeper Beeper allows the user to turn the audio beeper of the MG2 Series gages on and off. The Beeper is set to On by default and will generate an audio beep when any key is pressed or when an alarm condition has been detected.

  • Page 46: Inactive Time

    4.6.2 Inactive Time Inactive Time allows the user to set the Auto Power Off feature to either On or Off. When Inactive Time is set to On, the MG2 Series gage powers off after approximately six (6) minutes during which no thickness measurements or key presses have occurred.

  • Page 47: Backlight Mode

    ] keys to highlight the System tab. Step 3: Use the [ ] key to highlight Backlight Mode and [ to select between Normal and Auto. Step 4: Press [MEAS] to return to the Measure Mode. MG2 Series Page 4-15...

  • Page 48: 36Dlp Output

    4.6.5 36DLP Output (MG2-DL Only) 36DLP Output allows the user to choose to output the thickness data in a special 36DL PLUS output format. This will allow the MG2-DL to communicate with software programs that communicates with the 36DL PLUS. The MG2-DL will mimic the output format of the 36DL PLUS when the 36DLP Output is set to On.

  • Page 49: Diff Mode

    Step 6: Press [MEAS] to return to the Measure Mode. Diff Mode (MG2-XT and MG2-DL Only) Diff Mode allows the user to set a differential set point. When Diff Mode is activated, the gage displays the difference between the Diff set point and the actual thickness value.

  • Page 50: Clock Setup

    Press [MEAS] to return to the Measure Mode. Clock Setup (MG2-DL Only) The clock is used to set the internal date and time for the MG2-DL, so that a time and date stamp can be given to a data file. The time and date stamp indicates when data was last stored in a file.

  • Page 51: Resets

    Press [Enter] when Set is highlighted to set the clock and press [MEAS] to return to the Measure Mode. 4.10 Resets Resets are used to reset the operating software of the MG2 Series gages to their factory default settings. Three resets can be performed: Measurement, Master, and Database (MG2-DL only).
  • Page 52 • Resolution (Standard) • Min/Max (Off) • Hold/Blank (Blank) • Measure Rate (Normal) • CAL Lock (Off) • ID Overwrite (Off) MG2-DL only • Beeper (On) • Inactive Time (On) • Radix (Period) • Backlight Mode (Normal) • 36DLP Output (Off) (MG2-DL only) •...

  • Page 53: Master Reset

    4.10.2 Master Reset Master Reset resets the entire instrument to it’s default values and also deletes the database on the MG2-DL. Note: Caution should be used when performing a Master Reset because it will cause the gage to delete all stored thickness readings.

  • Page 54: Database Reset

    Press [MEAS] to return to the Measure Mode. 4.11 Activating Waveform Option (MG2- XT and MG2-DL Only) An optional Live Waveform can be added to any MG2-XT or MG2- DL gage. The Live Waveform option adds many measurement Page 4-22...
  • Page 55 To activate the internal Live Waveform feature, the user must enter a valid license code. Contact Panametrics-NDT or our local Panametrics-NDT representative to obtain a valid license code for the license name. This license code is not valid for any other MG2-XT MG2 Series Page 4-23...

  • Page 56: Optional Waveform

    4.12 Optional Waveform (MG2-XT and MG2-DL Only) The Live Waveform option for MG2-XT and MG2-DL Series gages allows the user to view the live ultrasonic waveform to help align the transducer for difficult applications. When this feature is added, the user can change between the standard thickness display and the optional live waveform display.
  • Page 57 910-257C • Save Key: A Save Key designation is also set in the Waveform setup (MG2-DL) to allow the user to define the function of the Save Key. Setting the Save Key to “THK ONLY” will save only the thickness value when the Save Key is pressed, while setting the Save Key to “THK + WF”...
  • Page 58 Step 5: Press [ ] or [ENTER] to scroll to Zoom. Step 6: Press [ ] to choose On or Off. Step 7: Press [ ] or [ENTER] to scroll to Save Key (MG2-DL only). Step 8: Press [ ] to choose THK ONLY or THK + WF.

  • Page 59: Waveform Adjust Mode

    [ ] keys to increase or decrease the waveform delay. 4.13 Waveform Adjust Mode (MG2-XT and MG2-DL Only) The Waveform Adjust Mode feature allows the user to make Setup adjustments that are not available in the Standard Mode.

  • Page 60: Manual Gain Adjust

    Gain back to its default value. Step 5: Press [MEAS] to exit the Waveform Adjust Mode with the parameters at their adjusted values. 4.13.1 Manual Gain Adjust (MG2-XT and MG2-DL Only) When the waveform is not activated or if the waveform option was not...
  • Page 61 Note: Normally, when the gain is set to its default value the waveform is ADC’d (Automatic Display Controlled). This feature automatically adjusts the amplitude of the detected backwall echo to try to keep the echo peak on screen. Once the gain has been changed from the default MG2 Series Page 4-29...

  • Page 62: Extended Blank

    When the blank is set, the gage measures to the first echo after the end of the blank that is higher in amplitude than the first gradicule’s 20% screen height. Page 4-30 MG2 Series...
  • Page 63 Manual Echo-to Echo mode. E1 Blank is used in Manual Echo-to-Echo along with Gain Adjust and MG2 Series Page 4-31...
  • Page 64 ] keys to increase or decrease the blank position. When E1 Blank is set, the gage measures to the next echo after the end of the E1 Blank that is higher in amplitude than the first gradicule (20% screen height). Page 4-32 MG2 Series...

  • Page 65: Range

    Between Successive Backwall Echoes 4.13.4 Range Range Adjust allows the user to adjust the range of the waveform so that the measured echoes appear on screen. Range Adjust is not available if the Waveform Zoom Option is turned on. MG2 Series Page 4-33...
  • Page 66 To adjusting the range when in Live Waveform Mode, press the [ ] or [ ] key to adjust the range to the next higher/lower range. The available ranges on the MG2-XT and MG2-DL Series gages are fixed based on the transducer being used.

  • Page 67: Delay

    Step 2: Press [ ] or [ ] to select the Delay Setup parameter. Step 3: Press [ ] to adjust the Delay. Step 4: Press [MEAS] to exit Waveform Adjust Mode with the Delay set at adjusted values. MG2 Series Page 4-35...

  • Page 68: B-Scan

    Optional Waveform are mutually exclusive features. Only one of these functions can be active at a time. Activation of one of these functions will automatically deactivate any of the others. You can save these images (datalogger versions only) in the gage internal Page 4-36 MG2 Series...
  • Page 69 B-Scan that is properly orientated based on transducer movement. Save Key: Determines what gets saved when the Save key is pressed. Saving B-scan images can only be done with the Datalogger version (DL) of the gages. MG2 Series Page 4-37...

  • Page 70: Using The B-Scan Function

    Step 4: Use [ ] to select a parameter and [ ] to adjust the setting. Step 5: When the Max thickness is highlighted, press [ to adjust the Max thickness (range for the B-scan) value Page 4-38 MG2 Series...
  • Page 71 (Freeze Current). This will also display the B-scan Review screen. The user can use the [ ] keys to review the thickness readings on the frozen B-scan. A triangle marks the location of the minimum thickness in the B- scan. MG2 Series Page 4-39...

  • Page 72: B-Scan Freeze

    During review, the gage always displays the thickness at the Review Marker location. Tip: Set the B-scan to Freeze Min if you wishes to recall the Minimum thickness to the center of the B-scan screen even if the minimum value moved off the B-scan screen. Page 4-40 MG2 Series...

  • Page 73: Saving B-Scan

    In the B-scan setup tab, set the Save Key option to “THK + B-scan”. Step 2: Press the Save key. A. Pressing the Save key while the B-scan is live (currently scrolling) saves the B-scan image and the thickness at MG2 Series Page 4-41...

  • Page 74: Db Grid (Dl Models Only)

    Turning one of these functions on will turn any of the other functions off. DB Grid of a 2D Grid type File DB Grid of a 2D Grid Type File Page 4-42 MG2 Series...

  • Page 75: Using The Db Grid Function

    Transpose Grid: Allows the user to switch the position of the Row and Columns of a 2D Grid file. This parameter has no affect on incremental or sequential files. 4.15.1 Using the DB Grid Function To activate the DB Grid feature: MG2 Series Page 4-43...

  • Page 76: Saving Data

    Press the [MEAS] key to return to the Measure mode and save the adjusted settings. 4.15.2 Saving Data While DB Grid Is Active Once DB Grid is activated, press the Save key to store the current thickness reading in the Current ID# location. Page 4-44 MG2 Series...

  • Page 77: Reviewing Stored Thickness Data

    ] to move to a new grid or ID# location. For incremental or sequential files, only the [ , ] keys can be used. Note: The user can jump to the beginning of the file by press- MG2 Series Page 4-45...

  • Page 78: Editing And Moving Directly

    Step 3: Press the Measure key to return to the Measure screen at the new ID# location or press [2 F], [ ] (ID#) to go back to Review mode at the edited ID# location. Page 4-46 MG2 Series...

  • Page 79: Inserted Id# Location In Grid Files

    ] keys to highlight the reverse video cell. Press [ENTER]. The grid will be displayed in an Expanded Linear format, and the inserted ID# can be viewed. Press [Enter] again to switch back to the normal DB Gird view. Inserted MG2 Series Page 4-47...
  • Page 80 910-257C March 2006 Page 4-48 MG2 Series...

  • Page 81: Datalogger

    March 2006 910-257C DATALOGGER Two important features of the MG2-DL are the internal datalogger and USB communication. The operation of the datalogger and data transmission are discussed in this section. Topics include: • Datalogger Overview • Organizing the Datalogger •...
  • Page 82 Minimum or Maximum Reading • Velocity • Resolution • Transducer Setup Number and Information ® • Coating Thickness (when THRU-COAT is active) You can store a maximum of 8,000 thickness values at any one time in the MG2-DL. Page 5-2 MG2 Series...

  • Page 83: Organizing The Datalogger

    March 2006 910-257C Organizing the Datalogger The MG2-DL datalogger is a flexible, file-based system. Every measurement stored into the datalogger is tagged with a file name and identification number (ID number). The file name and ID number may be thought of as the place in the gage memory where the measurement data is stored.

  • Page 84: Creating Data Files

    ID number. Creating Data Files You can create data files for the MG2-DL datalogger from within the gage. Throughout this section there are references to the use of the MG2-DL Standard Editing Commands.
  • Page 85 March 2006 910-257C After selecting an alpha character, press [ ] or [ ] to move the cursor position to another character. Figure 5-1: Organization of Character Cycle MG2 Series Page 5-5...

  • Page 86: Creating Files From A Computer

    5.3.2 Create Files From a Computer (Using GageView) See the GageView Interface Program Instruction Manual. 5.3.3 Create Files from the MG2-DL To create files from the MG2-DL, follow these steps: Step 1:Press [2 F],[ ](FILE). The File Tab menu opens. Step 2:Press [ ] and [ ] to highlight the Create option.
  • Page 87 ID number, the maximum number of digit positions must be entered initially using leading zeroes. Some examples of automatically generated incremented ID number series include: Table 5-1: Five Examples of Automatically Generated Incremented ID Number Series Initial Limit MG2 Series Page 5-7...
  • Page 88 910-257C March 2006 Table 5-1: Five Examples of Automatically Generated Incremented ID Number Series Initial Limit Initial ABC*12*34 ABC*12*35 ABC*12*36 Limit ABC*12*99 Initial Limit Page 5-8 MG2 Series...
  • Page 89 March 2006 910-257C Table 5-1: Five Examples of Automatically Generated Incremented ID Number Series Initial Limit MG2 Series Page 5-9...
  • Page 90 ] to select Done or Cancel. Press [ENTER]. 5.3.3.2 Sequential A Sequential File is defined by a starting and an ending ID number. The resulting file is inclusive of the starting and ending points and all points in between. Page 5-10 MG2 Series...
  • Page 91 Step 1: Press [2 F][ ](File) to display the File Tabs. Step 2: Use the [ ] keys to select the Create Tab. Step 3: Use the [ ] key to highlight the file name. Press the [ MG2 Series Page 5-11...
  • Page 92 (or row) value while the other dimension value stays constant. At this point the other dimension increments from its first to its last value. This Page 5-12 MG2 Series...
  • Page 93 ID number that refers to the last column and last row is reached. Note: Either the columns or the rows can be selected to incre- ment first. Refer to the following figure. Figure 2 General Grid Database MG2 Series Page 5-13...
  • Page 94 Step 7: Use the [ ] key to enter the Start COL using the [ , ] editing function. Press [ENTER]. Step 8: Use the [ ] key to enter the End COL using the [ , Page 5-14 MG2 Series...

  • Page 95: Opening A File

    ] to scroll to the Open tab. Step 3: Press [ ] to enter the Open tab. Step 4: Use [ ] or [ ] to scroll files. Step 5: Press [ENTER] to select the file. MG2 Series Page 5-15...

  • Page 96: Saving Data

    An audible beep indicates that the reading is saved. The displayed thickness value and setup information is stored at the current ID number in the current file. If the thickness display is blank when [SAVE] is pressed, then “_.___” is saved in place of a value. Page 5-16 MG2 Series...

  • Page 97: Using The Review Id Mode

    ID was unable to update. In this case, the ID number on the display remains unchanged. Some of the special features of the MG2-DL allow the gage to store more than one thickness value at an ID location. For this reason, the gage has two file types for saving data: •...

  • Page 98: Using Edit Id Mode

    No stored data is shown while in ID Edit mode and no measurements can be made. To use the ID Edit mode, follow these steps: Step 1: Press [2 ](ID#). Step 2: Press [2 ](ID#) again. Step 3: Use [ , ] to make changes. Page 5-18 MG2 Series...

  • Page 99: Delete

    The ID# structure will remain. Step 1: Press [2 F][ ](FILE) to go to the File Tabs. Step 2: Press [ ] to scroll to the Delete tab. MG2 Series Page 5-19...

  • Page 100: Deleting Selected Files

    Step 9: Press [MEAS] to return to Measurement Mode. 5.8.2 Delete Selected Files Step 1: Press [2 F][ ](FILE) to go to the File Tabs. Step 2: Press [ ] to scroll to the Delete tab. Page 5-20 MG2 Series...
  • Page 101 Step 6: Press [ENTER] to select the file for deletion. Step 7: Use [ ] or [ ] to choose Delete or Cancel. Step 8: Press [ENTER]. Step 9: Press [MEAS] to return to Measurement Mode. MG2 Series Page 5-21...

  • Page 102: Deleting Stored Value

    Press [ ] to enter the MEAS tab. Step 3: Press [ ] or [ ] to scroll to ID Overwrite. Step 4: Use [ ] or [ ] to choose ON or OFF. Step 5: Press [MEAS] to end. Page 5-22 MG2 Series...

  • Page 103: Receiving Files From A Computer

    ID#s or to compare current values with previous thickness values. You may create ID# sequences in a computer and then download them to the gage. This externally created sequence can guide you through the prescribed MG2 Series Page 5-23...

  • Page 104: Statistics Reports

    March 2006 measurement location path. The ID sequence created in the computer must have setup information. Data downloaded to the MG2-DL gage must be in the same format in which data is transmitted. Panametrics-NDT recommends using the GageView Interface Program to manage all functions of interfacing, storing, and creating MG2-DL data.
  • Page 105 Use [ ] and [ ] to scroll to files. Step 6: Press [ENTER] to select the file. Step 7: Use [ ] or [ ] to choose Report or Cancel. Step 8: Press [ENTER]. Step 9: Press [ENTER] again to view the next screen. MG2 Series Page 5-25...
  • Page 106 ] to edit the ID# using the [ , , ] editing function keys. Press [ENTER]. Step 7: Use [ ] or [ ] to choose Report or Cancel. Step 8: Press [ENTER]. Step 9: Press [ENTER] again to view the next screen. Page 5-26 MG2 Series...
  • Page 107 March 2006 910-257C MG2 Series Page 5-27...
  • Page 108 910-257C March 2006 Page 5-28 MG2 Series...

  • Page 109: Specifications

    Standard Mode - 4 measurements RATE: per second Fast Min Mode - 20 measurements per second MATERIAL VELOCITY 0.0200 - 0.7362 in/µS RANGE: 0.508 - 18.699 mm/µS TRANSDUCER ZERO Provides zero and temperature COMPENSATION: compensation for different transducers. MG2 Series Page 6-1...
  • Page 110 12. Battery Life Indicator 13. Key Press Guide 14. 2 Function Key Press Indicator: 15. Current Measurement Box 16. Coating Measurement (B, C) 17. ID Box (C) 18. DN Flag: DN, _ (C) RECEIVER 1 - 18MHz (-3dB) BANDWIDTH: Page 6-2 MG2 Series...
  • Page 111 MEASUREMENT Standard time interval from a MODE: precision delay after the excitation to the first echo using a dual element transducer. MG2-XT and MG2-DL: ® • THRU-COAT - Measure- ment of both metal and coat- ing thickness using a single...
  • Page 112 D790, D790-SM, D790-RL, D790-SL, D791, D791-RM, D792, D793, D794, D795, D797, D797- SM, D798, D798-LF, D798-SM, D7226, D799, and MTD705 MG2-XT and MG2-DL models use the transducers listed above and D7906-SM and D7908. DATALOGGER MG2-DL only STORAGE CAPACITY: 8000 thickness measurements or 350 waveforms with thickness with the Wavform option.
  • Page 113 -, ., /, ,, :, #, * FILE FORMATS Incremental, sequential, 2- dimension grid DATALOGGER Save Reading at ID# FEATURES: Review Stored Contents of Data Erase a File or Files Move to specific ID#’s in a file COMMUNICATION USB 2.0 Full Speed MG2 Series Page 6-5...
  • Page 114 910-257C March 2006 Page 6-6 MG2 Series...

  • Page 115: Theory Of Operation

    March 2006 910-257C THEORY OF OPERATION MG2 Series Gages operate on the dual transducer "pulse-echo" principal, timing the reflection of high frequency sound waves from the far wall of the test piece. This technique, derived from sonar, has been widely applied to nondestructive testing.The frequency range...
  • Page 116 910-257C March 2006 Page 7-2 MG2 Series...

  • Page 117: Application Notes

    On small diameter cylindrical surfaces such as pipes, hold the transducer so that the sound barrier material visible on the probe face is aligned perpendicular to the center axis of the pipe. See the illustration below. MG2 Series Page 8-1...
  • Page 118 It is essential that the velocity and zero calibrations be performed whenever the test material or transducer is changed. Periodic checks with samples of known thicknesses are recommended to verify that the gage is operating properly. Page 8-2 MG2 Series...
  • Page 119 Other materials show a rapid change in sound velocity with temperature. This is characteristic of plastic materials where temperature must be controlled in order to obtain maximum precision in the measurement. MG2 Series Page 8-3...

  • Page 120: Transducer Selection

    Panametrics-NDT MG2 gage. Note that these numbers are approximate. The exact measurable minimum in a given application depends on material velocity, surface condition, temperature and geometry, and it should be determined experimentally by the user.
  • Page 121 32° - 122°F Rt. Angle (11.0 mm) (1-50 mm) (0° - 50°C) D7908 0.283" 0.028" - 1.5" (7.2 mm) (0.71-38 mm) MTD705 Rt. Angle 0.200" 0.040" - 0.75" 32° - 122°F (5.1 mm) (1.0-19 mm) (0° - 50°C) MG2 Series Page 8-5...

  • Page 122: High Temperature Measurements

    The chart above lists recommended temperature ranges for the Panametrics- duals used with the MG2 gage. For other transducers, consult the manufacturer. Using a transducer on materials whose temperature is beyond the specified range can damage or destroy the transducer.
  • Page 123 The Panametrics-NDT MG2 gage has a semiautomatic zero function that can be employed to adjust zero setting at high temperatures.
  • Page 124 Gain Adjust procedure or the Material Sensitivity Optimization procedure. High temperature couplants are generally less efficient than those used at lower temperatures, so the MG2 will work better when sensitivity is adjusted or optimized to accommodate high temperature conditions.

  • Page 125: Maintenance And Troubleshooting

    MAINTENANCE AND TROUBLESHOOTING 9.1 Routine Care And Maintenance The MG2 case is sealed to prevent intrusion of environmental liquids and dust. However, it is not completely waterproof. Therefore, the unit should never be immersed in any fluid. The case, keypad and display window may be cleaned with a damp cloth and mild detergent if necessary.

  • Page 126: Error Messages

    SETUP ( "Do--") PROBLEMS If the message "Do--" will not go away when the [ZERO] key is pressed, make sure a Panametrics-NDT transducer is plugged in. If so, the transducer may be defective. Try another one if possible, or try a different cable.

  • Page 127: Measurement Problems

    Step 4: If the tests above all pass, but measurements still cannot be made, try Gain Adjust or Material Sensitivity (MG2-XT and MG2-DL). If measurements still cannot be made, try a different type of transducer with greater sensitivity in the thickness range in which you are working.

  • Page 128: Self Diagnostics

    • Extreme non-parallelism • Excessively sharp curvature 9.6 Self Diagnostics MG2 Series corrosion thickness gages include two self-diagnostic screens that permit the user to identify hardware or software problems. To view the Diagnostic 1 screen and see internal self-test results: Step 1: Press [2ndF][ ](Setup) to display the setup tabs.
  • Page 129 Note: Highlighted parameters indicate that the specific self- test failed based on the expected values. To view the Diagnostic 2 screen, which shows information about your MG2 series gage: Step 1: Press [2ndF][ ](Setup) to display the setup tabs. Step 2: Use the [ ] keys to highlight the DIAG2 tab.
  • Page 130 PR RX Indicates the time of flight for the receiver delay line Table 9-2: DIAG2 Results Note: If PR TX displays N/A, then either the cable is broken or there is a problem with the transducer. Page 9-6 MG2 Series...

  • Page 131: Tests

    March 2006 910-257C 9.7 Tests The MG2 Series TESTS screen, shown below, includes two tests of gage performance: • KEYPAD - Tests keypad keys. • VIDEO - Tests to assure that pixel locations are functional. 9.7.1 KEYPAD TEST The KEYPAD TEST tests to assure that keypad keys are functional.
  • Page 132 Step 3: Press ENTER to Exit to the TESTS screen. 9.7.2 VIDEO TEST The VIDEO TEST tests to assure that individual pixels are functional. Non-functional pixels display in white when the VIDEO TEST is run. Page 9-8 MG2 Series...
  • Page 133 ENTER or [2ndF][ ] to abort the test. Determine visually that video pixels are functional by observing if white spots occur in the screen test display. Step 3: Press ENTER to Exit to the TESTS screen. MG2 Series Page 9-9...

  • Page 134: Repair Service

    Massachusetts, USA factory. In addition, some local Panametrics- NDT dealers can perform repairs. 9.9 Replacement Parts And Optional Parts And Equipment Replacement parts for the MG2 as well as additional related equipment are available from Panametrics-NDT Page 9-10 MG2 Series...

  • Page 135: Appendix I: Sound Velocities

    0.249 6320 Beryllium 0.508 12900 Brass, naval 0.174 4430 Copper 0.183 4660 Diamond 0.709 18000 Glycerin 0.076 1920 Inconel® 0.229 5820 Iron, Cast (slow) 0.138 3500 Iron, Cast (fast) 0.220 5600 Iron oxide (magnetite) 0.232 5890 MG2 Series Page I-1...
  • Page 136 0.082 2080 (LDPE) Polystyrene 0.092 2340 Polyvinylchloride, (PVC, 0.094 2395 hard) Rubber (polybutadiene) 0.063 1610 Silicon 0.379 9620 Silicone 0.058 1485 Steel, 1020 0.232 5890 Steel, 4340 0.230 5850 Steel, 302 austenitic stain- 0.223 5660 less Page I-2 MG2 Series...
  • Page 137 References 1. W.P. Mason, Physical Acoustics and the Properties of Solids, D. Van Nostrand Co., New York, 1958. 2. E.P. Papadakis, Panametrics - unpublished notes, 1972. 3. J.R. Fredericks, Ultrasonic Engineering, John Wiley & Sons, Inc., New York, 1965. 4. D. L. Folds, "Experimental Determination of Ultrasonic Wave Velocities in Plastics, Elastomers, and Syntactic Foam as a Function of Temperature", Naval Research and Development...
  • Page 138 910-257C March 2006 Page I-4 MG2 Series...

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