Manual 37DLP

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t~~WarrantyThe Model 37DL PLUS Ultrasonic Gage has been designed and manufactured as a precision instrument. Under normal working conditions it will provide long, trouble-free service.

Damage in transit: Inspect the unit thoroughly immediately upon receipt for evidence of external or internal damage that may have occurred during shipment. Notify the carrier making the delivery immediately of any damage, since the carrier is normally liable for damage in shipment. Preserve packing materials, waybills, and other shipping documentation in order to establish damage claims. After notifying the carrier, contact oLa=q=fI=fK so that we may assist in the damage claims, and provide replacement equipment, if necessary.

oLa=q=fI=fK guarantees the Model 37DL PLUS to be free from defects in materials and workmanship for a period of two years (twenty-four months) from date of shipment. The warranty only covers equipment that has been used in a proper manner as described in this instruction manual and has not been subjected to excessive abuse, attempted unauthorized repair, or modification. DURING THIS WARRANTY PERIOD, oLa=q=fI=fK LIABILITY IS STRICTLY LIMITED TO REPAIR OR REPLACEMETN OF A DEFECTIVE UNIT AT ITS OPTION. oLa=q=fI=fK does not warrant the Model 37DL PLUS to be suitable for intended use, and assumes no responsibility for unsuitability for intended use. oLa=q=fI=fK accepts no liability for consequential or incidental damages including damage to property and/or personal injury.This warranty does not include the transducer, transducer cable, charger, or battery. The customer will pay shipping expense to the oLa=q=fI=fK plant for warranty repair; oLa=q=fI=fK will pay for the return of the repaired equipment. (For instruments not under warranty, the customer will pay shipping expenses both ways.)oLa=q=fI=fK offers an optional third year warranty coverage (at an additional cost), under the same terms, at the time of purchase.oLa=q=fI=fK reserves the right to modify all products without incurring the responsibility for modifying previously manufactured products. oLa=q=fI=fK does not assume any liability for the results of particular installations, as these circumstances are not within our control.

THE WARRANTIES SET FORTH HEREIN ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES WHETHER STATUTORY, EXPRESS OR IMPLIED (INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, AND WARRANTIES ARISING FROM COURSE OF DEALING OR USAGE OR TRADE.)m~=@=VNMJOPV`

j=PTai=mirp

q~==`Table of Contents

Warranty

Table of Contents

List of Tables

List of Figures

1 Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171.1 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171.2 About this Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191.3 Audience. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191.4 Typographic Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191.5 Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201.6 If You have Documentation Comments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201.7 Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211.8 Technical Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2 Defining Basic Gage Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232.1 Summarizing Keypad Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232.2 Identifying Display Elements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292.3 Using the Battery Pack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302.4 Monitoring the Battery Charge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312.5 Charging the Battery Pack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312.6 Replacing the Battery Pack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312.7 Using AA Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3 Set Up Calibration with D79X Series Dual Element Transducers . . . . . . . 333.1 Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333.2 Making Thickness Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353.3 Calibrating with D79X Series Dual Element Transducers. . . . . . . . . . . . . . . . . . 35

3.3.1 Transducer Zero Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363.3.2 Material Velocity and Zero Calibration . . . . . . . . . . . . . . . . . . . . . . . . . 36

3.3.2.1Material Velocity Calibration of a Material of Unknown Sound Velocity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

3.3.2.2Enter a Known Material Sound Velocity . . . . . . . . . . . . . . . . . . 383.3.3 Zero Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3.4 Performing a Thru-Coat Calibration Using D7906 and D7908 Transducers. . . . 393.4.1 Thru-Coat (Material Only) Calibration . . . . . . . . . . . . . . . . . . . . . . . . . 403.4.2 Thru-Coat (Material and Coating) Calibration . . . . . . . . . . . . . . . . . . . 40m~=@=VNMJOPV`

j=PTai=mirp4 Setting Up and Calibrating with EMAT Transducers . . . . . . . . . . . . . . . . . 434.1 Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 434.2 Calibration with the E110-SB EMAT Transducer . . . . . . . . . . . . . . . . . . . . . . . . 44

4.2.1 Material Velocity and Zero Calibration . . . . . . . . . . . . . . . . . . . . . . . . . 444.2.2 Material Velocity of a Material of Unknown Sound Velocity. . . . . . . . 454.2.3 Entering a Known Material Sound Velocity . . . . . . . . . . . . . . . . . . . . . 464.2.4 Zero Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 464.2.5 Making Adjustments to the Transducer Parameters When Using the

E110-SB EMAT Transducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

5 Set Up and Calibration with Single Element Transducers. . . . . . . . . . . . . 495.1 Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 495.2 Choosing a Default or User-Defined Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 505.3 Making Thickness Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 525.4 Calibrating with Single Element Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

5.4.1 Velocity and Zero Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 545.4.2 Velocity Calibration Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 555.4.3 Zero Calibration Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

5.5 Adjusting the Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 575.6 Operating the Delay Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 585.7 Operating the Zoom Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

5.7.1 Zoom for D79X Dual Element Transducers and Mode 1 Single Element Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

5.7.2 Zoom with Single Element Transducers in Mode 2. . . . . . . . . . . . . . . . 595.7.3 Zoom with Single Element Transducers in Mode 3. . . . . . . . . . . . . . . . 59

6 Setting Up and Calibrating for the Measurement of Boiler Tubes and Internal Oxide Scale Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 616.1 Steam Boiler Tube Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 616.2 Activating the Internal Oxide Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 636.3 Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 646.4 Calibration for the Boiler Tube and Internal Oxide Thickness Measurements . . 66

6.4.1 Material Velocity, Zero and Oxide Velocity Calibration. . . . . . . . . . . . 666.4.2 Entering a Known Material and Internal Oxide Sound Velocity. . . . . . 68

7 Managing Special Gage Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 697.1 Selecting a Differential Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 697.2 Using the Fast Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 717.3 Using the Minimum Thickness Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 717.4 Using the Maximum Thickness Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 737.5 Managing High/Low Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

7.5.1 Standard Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 757.5.2 Previous Thickness Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 777.5.3 B-Scan Alarm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

q~==`7.6 Changing the Thickness Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 807.7 Managing the Calibration Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 817.8 Freezing Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

8 Managing Setup Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 838.1 Managing the Measurement Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

8.1.1 Beeper Tone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 848.1.2 Inactive Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 848.1.3 Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 858.1.4 Radix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 858.1.5 Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 868.1.6 Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 878.1.7 Hold/Blank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 878.1.8 Rectification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 888.1.9 Waveform. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 898.1.10 Backlight Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 908.1.11 Supervisor Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 908.1.12 Save Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 918.1.13 ID Overwrite Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

8.2 Operating the B-Scan/DB Grid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 938.3 Using Avg/Min Measure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 938.4 Operating Temperature Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 938.5 Managing the Communications Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 938.6 Managing Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

8.6.1 Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 978.6.2 Video . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 978.6.3 Hardware Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 978.6.4 Error Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

8.7 Operating Gage Resets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 988.7.1 Measurement Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 988.7.2 Communications Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 998.7.3 DBase Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1008.7.4 Master Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

8.8 Using the Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1018.9 Licensed Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1028.10 Oxide Measure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1028.11 Adjusting Display Contrast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

9 Using Advanced Gaging Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1059.1 Setting the Manual Gain Adjust with a D79X Series and E110, EMAT

Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1059.2 Using Automatic Gain Optimization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

9.2.1 Return to Default Gain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1079.2.2 Restore the Previous Automatically Optimized Gain . . . . . . . . . . . . . 107m~=@=VNMJOPV`

j=PTai=mirp9.3 Adjusting the Extended Blank with D79X Series Transducers . . . . . . . . . . . . . 1089.4 Using the Echo-to-Echo Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

9.4.1 Automatic Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1099.4.2 Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1109.4.3 Blanking Adjustments in Manual Echo-to-Echo . . . . . . . . . . . . . . . . . 1119.4.4 Return to Normal Measurement Mode . . . . . . . . . . . . . . . . . . . . . . . . 1119.4.5 Transducer Usage in Echo-to-Echo Mode . . . . . . . . . . . . . . . . . . . . . . 1129.4.6 Echo-to-Echo Mode Datalogger Flags. . . . . . . . . . . . . . . . . . . . . . . . . 113

9.5 Operating the B-Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1139.5.1 Display Half B-Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1169.5.2 Display Full B-Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1169.5.3 Enable the B-Scan Alarm Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1169.5.4 Save B-scans, A-Scans, or Thickness Readings . . . . . . . . . . . . . . . . . 117

9.6 Using the Grid View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1179.6.1 Display Half Database Grid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1209.6.2 Display Full Database Grid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1219.6.3 Save Thickness Readings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1219.6.4 Grid Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

9.7 Operating the Thru-Coat Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1229.8 Reading Avg/Min Measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1229.9 Managing Temperature Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

10 Managing the Datalogger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12710.1 Understanding the Datalogger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12710.2 Organizing the Datalogger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

10.2.1 File Name Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12910.2.2 Identifier (ID Number) Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12910.2.3 File Name Header Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13010.2.4 Comment Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

10.3 Creating Data Files. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13210.3.1 Standard Editing Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13210.3.2 Create Files from a Computer (using the optional WIN37DL PLUS). 13310.3.3 Create Files from the Model 37DL PLUS . . . . . . . . . . . . . . . . . . . . . . 133

10.3.3.1Incremental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13510.3.3.2Sequential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13810.3.3.3Sequential with Custom Point . . . . . . . . . . . . . . . . . . . . . . . . . 14210.3.3.42-D Matrix Grid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14510.3.3.52-D Matrix Grid with Custom Point . . . . . . . . . . . . . . . . . . . . 14910.3.3.63-D Matrix Grid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15310.3.3.7Boiler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

10.4 Opening a File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16010.5 Copying a File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16110.6 Deleting a File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16310.7 Editing/Renaming a File. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164

q~==`10.8 Creating or Editing Comment Tables from a Computer . . . . . . . . . . . . . . . . . . 16710.9 Creating or Editing Comment Tables from the Model 37DL PLUS . . . . . . . . . 167

10.9.1 Delete Comments from a Comment Table. . . . . . . . . . . . . . . . . . . . . . 16710.9.2 Copy a Note . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16810.9.3 Database Tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

10.10Saving Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16910.10.1 Save Thickness Readings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17010.10.2 Save Thickness and Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17010.10.3 Save Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

10.11Using the Review ID Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17110.12Using the Edit ID Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17310.13Erasing Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

10.13.1 Erase Data in the Active/Open File . . . . . . . . . . . . . . . . . . . . . . . . . . . 17410.13.2 Erase a File. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17610.13.3 Erase the Entire Database. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

10.14Using the Optional Bar Code Wand to Enter an ID Number. . . . . . . . . . . . . . . 17710.15Generating Reports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

11 Custom Setups for Single Element Transducers . . . . . . . . . . . . . . . . . . . 18511.1 Managing the Detect Mode Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18511.2 Defining a Setup Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18711.3 Defining Measurement Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18711.4 Defining a Probe Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18711.5 Varying Pulser Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18711.6 Adjusting Maximum Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18811.7 Adjusting Initial Gain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18911.8 Adjusting TDG Slope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19011.9 Adjusting the Main Bang Blank. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19011.10Adjusting the Echo Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

11.10.1 Echo 1 Detect and Echo 2 Detect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19311.10.2 Interface Blank. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19411.10.3 Mode 3 Echo Blank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19511.10.4 Setup Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19611.10.5 Save Setup Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197

12 Managing Communications/Data Transfer . . . . . . . . . . . . . . . . . . . . . . . . 19912.1 Transmitting Data to a Computer or Printer. . . . . . . . . . . . . . . . . . . . . . . . . . . . 199

12.1.1 Send Entire Files from Gage to Computer or Printer. . . . . . . . . . . . . . 20012.1.2 Sending a Specific Range of ID Numbers from a Specific File . . . . . 20112.1.3 Perform a Single Send of the Current Displayed Measurement

Data to a Computer or Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20212.1.4 Send a Snapshot from the Model 37DL PLUS to a Computer . . . . . . 20212.1.5 Send a Snapshot from the Model 37DL PLUS to a Printer . . . . . . . . . 202

12.2 Receiving (Downloading) Files from a Computer . . . . . . . . . . . . . . . . . . . . . . . 203m~=@=VNMJOPV`

j=PTai=mirp12.3 Uploading/Downloading a Stored Transducer Setup to a Computer . . . . . . . . . 20412.4 Setting Up Serial Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204

12.4.1 RS-232 Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20412.4.2 Communication Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

12.5 Identifying Data Output Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20712.6 Performing a Communication Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20812.7 Using the WIN37DL PLUS Interface Program . . . . . . . . . . . . . . . . . . . . . . . . . 210

13 Maintaining and Troubleshooting the Model 37DL PLUS . . . . . . . . . . . . 21113.1 Providing Routine Gage Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21113.2 Maintaining Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21213.3 Understanding Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21213.4 Resolving Battery and Charger Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21213.5 Resolving Measurement Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21313.6 Performing Diagnostic Self Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213

13.6.1 Keypad Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21413.6.2 Video Display Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21413.6.3 Hardware Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21413.6.4 Error Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

Appendix A - Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217

Appendix B - Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225

Appendix C - Sound Velocities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

Appendix D - Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241

Appendix E - Data Output Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243

Appendix F - Remote Control Via RS-232 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277

Appendix G - Accessories and Replacement Parts . . . . . . . . . . . . . . . . . . . . . 287

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291

Documentation Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297

i==q~List of Tables

Table 1 Typographic Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Table 2 Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Table 3 Keypad Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Table 4 Oxide Measure Setup Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66Table 5 Calculating a Low/High Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78Table 6 Calculating a Percent Thickness Alarm Value. . . . . . . . . . . . . . . . . . . . . . . . . . . 78Table 7 Measurement Reset Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98Table 8 Recommended Transducers for Steel Using Echo-to-Echo Mode. . . . . . . . . . . 112Table 9 DtectMode and EchWindow Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192Table 10 Computer or Printer Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205Table 11 Model 37DL PLUS Dual Element Transducer Output Formats . . . . . . . . . . . . 207Table 12 Model 37DL PLUS Single Element Transducer Output Formats . . . . . . . . . . . 207Table 13 Information Displayed on the Model 37DL PLUS Screen . . . . . . . . . . . . . . . . 227Table 14 Setup Name and Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233Table 15 Setup Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234Table 16 Sound Velocities of Various Materials (Longitudinal Wave Velocity) . . . . . . . 239Table 17 Equipment Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241Table 18 Standard 37DL PLUS I/O Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241Table 19 Model 37DL PLUS Dual Element Transducer Output Formats . . . . . . . . . . . . 243Table 20 Model 37DL PLUS Single Element Transducer Output Formats . . . . . . . . . . . 243Table 21 Flag Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275Table 22 Command Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284Table 23 Accessories and Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287m~=@=VNMJOPV`

j=PTai=mirp

i==cList of Figures

Figure 1 Model 37DL PLUS Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Figure 2 Identifying Display Elements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Figure 3 Initial Display Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34Figure 4 Changing Measurement Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34Figure 5 Opening the Thru-Coat Setup Dialog Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Figure 6 Transducer and Filter Adapter Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44Figure 7 Viewing the Model 37DL PLUS Transducer Connectors . . . . . . . . . . . . . . . . . . 49Figure 8 Initial Display Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50Figure 9 Selecting a Stored Transducer Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51Figure 10 Naming Convention Sample . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51Figure 11 Reading Thickness Measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53Figure 12 Displaying the Waveform Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58Figure 13 Comparing Normal Display to Zoom in Mode 1 . . . . . . . . . . . . . . . . . . . . . . . . . 59Figure 14 Comparing Normal Display to Zoom in Mode 2 . . . . . . . . . . . . . . . . . . . . . . . . . 59Figure 15 Comparing Normal Display to Zoom in Mode 3 . . . . . . . . . . . . . . . . . . . . . . . . . 60Figure 16 Steel/Oxide Echo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62Figure 17 Disbonded Oxide Layer Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63Figure 18 SP Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63Figure 19 Viewing the Model 37DL PLUS Transducer Connectors . . . . . . . . . . . . . . . . . . 64Figure 20 SP Mode Selection Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65Figure 21 Oxide Measure Setup Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65Figure 22 Normal Differential Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69Figure 23 Percent Ratio Differential Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70Figure 24 Viewing the Normal and % Ratio in the Differential Setup Screen. . . . . . . . . . . 70Figure 25 Viewing the Thickness Display in Fast Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 71Figure 26 Displaying the Minimum Thickness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72Figure 27 Identifying MIN Readings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73Figure 28 Displaying the Maximum Thickness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74Figure 29 Referencing the Low Alarm Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75Figure 30 Referencing the High Alarm Indicator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76Figure 31 Selecting Alarm Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76Figure 32 Displaying the Previous Thickness Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77Figure 33 Entering Loss/Growth Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79Figure 34 Changing Resolution Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80Figure 35 Selecting Beeper Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84Figure 36 Selecting Inactive Time Parameter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85Figure 37 Selecting Language Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85Figure 38 Selecting Radix Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86Figure 39 Selecting Units Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86Figure 40 Selecting Resolution Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87Figure 41 Selecting Hold/Blank Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87m~=@=VNMJOPV`

Figure 42 Selecting Rectification Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

j=PTai=mirpFigure 43 Displaying a Waveform Trace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89Figure 44 Selecting Waveform Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89Figure 45 Selecting Backlight Mode Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90Figure 46 Selecting Supervisor Lock Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91Figure 47 Selecting Save Key Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92Figure 48 Selecting ID Overwrite Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92Figure 49 Saving Measurements with Overwrite Protection Activated . . . . . . . . . . . . . . . . 93Figure 50 Selecting the Communications Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94Figure 51 Changing the Communication Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94Figure 52 Selecting the DBASE Tracking Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96Figure 53 Warning Prompt for Measurement Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99Figure 54 Warning Prompt for Communication Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . 100Figure 55 Warning Prompt for Dbase Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100Figure 56 Warning Prompt for Master Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101Figure 57 Selecting Clock Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102Figure 58 Viewing Changes in the Default Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106Figure 59 Viewing the Blank Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108Figure 60 Selecting the Automatic Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110Figure 61 Selecting the Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110Figure 62 Comparing Manual Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111Figure 63 Selecting the Normal Measurement Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112Figure 64 Changing B-Scan Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113Figure 65 Analyzing a B-Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114Figure 66 Defining the Freeze Review Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115Figure 67 Changing DB Grid Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118Figure 68 Displaying Reverse Grid Rows Off (Ascending). . . . . . . . . . . . . . . . . . . . . . . . 118Figure 69 Displaying Reverse Grid Rows On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118Figure 70 Displaying Reverse Grid Columns Off (Ascending) . . . . . . . . . . . . . . . . . . . . . 119Figure 71 Displaying Reverse Grid Columns On (Descending) . . . . . . . . . . . . . . . . . . . . 119Figure 72 Displaying Transpose Grid Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119Figure 73 Displaying Transpose Grid On. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119Figure 74 Displaying Grid IDS in Linear Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119Figure 75 Viewing the Data Cell Flag Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120Figure 76 Opening the Avg/Min Measure Dialog Box . . . . . . . . . . . . . . . . . . . . . . . . . . . 122Figure 77 Viewing the Display Screen with Avg/Min Measurement Active. . . . . . . . . . . 123Figure 78 Replacing a Avg/Min Measurement Reading . . . . . . . . . . . . . . . . . . . . . . . . . . 124Figure 79 Opening Temp Compensation Dialog Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125Figure 80 Displaying Temperature Compensation Data . . . . . . . . . . . . . . . . . . . . . . . . . . 126Figure 81 Identifying Datalogger Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128Figure 82 Creating a File Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130Figure 83 Creating a Note. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131Figure 84 Organization of Character Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133Figure 85 Selecting the Create Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134Figure 86 Selecting a File Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

i==cFigure 87 Selecting an Incremental File Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137Figure 88 Enter Incremental File Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137Figure 89 Selecting a Sequential File Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140Figure 90 Entering Sequential File Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141Figure 91 Selecting a Sequential with Custom Point File Type . . . . . . . . . . . . . . . . . . . . . 143Figure 92 Entering Sequential with Custom Point File Information . . . . . . . . . . . . . . . . . 144Figure 93 General Grid Database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145Figure 94 One Grid for 75 Identical Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146Figure 95 Different Named Grid for Each Part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147Figure 96 Selecting a 2D Grid File Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147Figure 97 Entering 2D Grid File Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148Figure 98 Selecting a 2-D Grid with Custom Points File Type . . . . . . . . . . . . . . . . . . . . . 151Figure 99 Entering 2D Grid with Custom Points File Information . . . . . . . . . . . . . . . . . . 152Figure 100 Selecting a 3-D Grid with Custom Points File Type . . . . . . . . . . . . . . . . . . . . . 155Figure 101 Entering 3D Grid File Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156Figure 102 Selecting a Boiler File Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158Figure 103 Entering Boiler File Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159Figure 104 Selecting Open Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160Figure 105 Opening a File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161Figure 106 Selecting the Copy Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162Figure 107 Copying a File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162Figure 108 Selecting the Delete Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163Figure 109 Deleting a File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163Figure 110 Deleting an Active File. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164Figure 111 Selecting the Edit-Rename Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165Figure 112 Entering New File Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165Figure 113 Displaying the Grid Edit Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166Figure 114 Entering Information for the Comment Table . . . . . . . . . . . . . . . . . . . . . . . . . . 167Figure 115 Selecting the Note-Copy Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168Figure 116 Selecting a Note to Copy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169Figure 117 Selecting a Comment from the Notes Table . . . . . . . . . . . . . . . . . . . . . . . . . . . 171Figure 118 Identifying the Review ID Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172Figure 119 Enabling the ID Edit Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173Figure 120 Example of Screen if Edited ID is Not in the Database . . . . . . . . . . . . . . . . . . . 174Figure 121 Selecting the Resets Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176Figure 122 Selecting the DBase Reset Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177Figure 123 Warning Message when Resetting DBase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177Figure 124 Selecting the Reports Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178Figure 125 Selecting the File Summary with Stats Option . . . . . . . . . . . . . . . . . . . . . . . . . 179Figure 126 Selecting a File to View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179Figure 127 Viewing File if Min/Max Summary is Selected. . . . . . . . . . . . . . . . . . . . . . . . . 180Figure 128 Reviewing the Min/Max Summary Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180Figure 129 Viewing File if File Comparison is Selected . . . . . . . . . . . . . . . . . . . . . . . . . . . 181Figure 130 Reviewing the Comparison Summary Report . . . . . . . . . . . . . . . . . . . . . . . . . . 182m~=@=VNMJOPV`

j=PTai=mirpFigure 131 Viewing File if Alarm Report is Selected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182Figure 132 Reviewing Alarm Summary Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183Figure 133 Detect Mode 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186Figure 134 Detect Mode 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186Figure 135 Detect Mode 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187Figure 136 Pulser Power Set to 30 Volts Shows a Smaller Initial Pulse . . . . . . . . . . . . . . . 188Figure 137 Pulser Power Set to 110 Volts Shows a Larger Initial Pulse . . . . . . . . . . . . . . . 188Figure 138 Maximum Gain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189Figure 139 Initial Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190Figure 140 TDG Slope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190Figure 141 Main Bang Blank Position for Mode 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191Figure 142 Main Bang Blank Position for Mode 2 and 3. . . . . . . . . . . . . . . . . . . . . . . . . . . 191Figure 143 Echo Window Setting for Mode 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192Figure 144 Echo Window Setting for Mode 2 and 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193Figure 145 Negative Detection Steel Back by Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194Figure 146 Positive Detection Plastic Bonded to Steel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194Figure 147 Mode 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195Figure 148 Mode 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195Figure 149 Gage Hanging up on Trailing Edge of Backwall 1 . . . . . . . . . . . . . . . . . . . . . . 196Figure 150 M3Blank Set Properly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196Figure 151 Adjusting the Setup Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197Figure 152 Displaying Recall Setups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197Figure 153 Saving Recall Setups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198Figure 154 Selecting the Send Option from the File Menu . . . . . . . . . . . . . . . . . . . . . . . . . 200Figure 155 Selecting a File to Send . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200Figure 156 Identifying a Range of ID Numbers to Send . . . . . . . . . . . . . . . . . . . . . . . . . . . 201Figure 157 Selecting the Communication Option from the Setup Mode Menu. . . . . . . . . . 206Figure 158 Viewing Communication Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206Figure 159 Viewing the Communication Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208Figure 160 Selecting the Resets Option from the Setup Mode Menu . . . . . . . . . . . . . . . . . 209Figure 161 Selecting Communications Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209Figure 162 Warning Prompt for Communication Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . 209Figure 163 Viewing the Hardware Status Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214Figure 164 Dual Transducer Sound Paths when Measuring Material Thickness. . . . . . . . . 218Figure 165 Received Transducer Waveform when Measuring a Material Thickness . . . . . 218Figure 166 Model 37DL PLUS Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219Figure 167 Positioning the Transducer on Test Material . . . . . . . . . . . . . . . . . . . . . . . . . . . 221Figure 168 Usual Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222Figure 169 Special Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223

m~1 PrefaceThe preface provides the following introductory topics: Product Description About this Document Audience Typographic Conventions Related Documentation If You have Documentation Comments Revision History Technical Help

1.1 Product Description The Panametrics-NDTTM Model 37DL PLUS is a hand-held ultrasonic thickness gage designed primarily for corroded metal applications. An integral A-Scan display allows waveform verification simultaneous with a thickness read-out. An advanced internal datalogger allows storage of 60,000 thickness measurements and 4,500 waveforms. Plus, a two way serial RS-232 communications connector allows the gage to interface with printers and computers.The Model 37DL PLUS is capable of using both single element and dual element transducers to measure the thickness of corroded, pitted, scaled, granular, and other difficult materials from one side only. You can also use single element or dual element transducers for echo-to-echo measurements. A full line of transducers are available to measure materials between 0.005" (0.50mm) and 25" (500mm) thickness with material temperatures between -20C to +500C (-4F to 932F) depending on material, transducer, and measurement mode. Moreover, the Model 37DL PLUS uses a microprocessor that continuously adjusts the receiver setup so that every measurement is optimized for reliability, range, sensitivity, and accuracy.The Model 37DL PLUS also offers many advanced measurement features, A-Scan and B-Scan display options, and internal datalogging functions. Advanced Measurement Features: Thru-coat measurement Boil tube scale algorithm Temperature compensated measurement Min/Average mode Emat transducer capability Measurement related status flags and alarmsm~=@=VNMJOPV` NT

j=PTai=mirp LCD with selectable backlight for highly readable information under all lightingconditions

Automatic probe recognition for the standard D79X and MTD705 series transducers Calibration for unknown material velocity and/or transducer zero Echo-to-echo measurements Fast Scan mode with 20 readings/sec. Manual Gain Adjust in 1db steps Hold or Blank thickness display during loss of signal (LOS) conditions Hold minimum or maximum reading modes with MinFinder Differential thickness display relative to setpoint in absolute or percent ratio Calibration lockout function Selectable resolution 0.001" (0.01mm) or 0.01" (0.1mm)

A-Scan and B-Scan Display Options: Real-time A-Scan waveform display for verification of critical measurements Manual Freeze mode with post processing Manual Zoom and Range control of waveform display Auto Hold on LOS and Auto Zoom (measured echo centering) Extended Blank Blank after first received echo in echo-to-echo mode Receiver Gain read-out Ability to capture and display waveform associated with minimum thickness during

scanned measurements Display stored and downloaded waveforms

Internal Datalogger Functions: Capacity to store 60,000 fully documented thickness readings or 4,500 waveforms

with thickness readings Database enhancements include 32 character file naming, 20 character ID naming

EPRI formatting, and dynamic grid sizing ID numbers increment automatically, follow a preset sequence, or can be set from the

keyboard Save reading/waveform at an ID number Simultaneously show filename, ID number, stored comments, and stored reference

thickness while displaying active thickness and waveform Seven file formats availableNU

m~ Erase selected data or all stored data Save or send a held or frozen reading on the thickness display Transmit selected data or all stored data Keyboard programmable communication parameters

1.2 About this DocumentThis document is the Instruction Manual for the Model 37DL PLUS. The Instruction Manual describes routine tasks for operating the Model 37DL PLUS. These tasks include operating the Model 37DL PLUS, configuring system parameters, managing system functions, calibrating the Model 37DL PLUS with single and dual element transducers, managing special gage functions and advanced gaging features, using the datalogger, transmitting files, and maintaining the gage.

1.3 AudienceThis document is intended for any operator using the Model 37DL PLUS. Panametrics-NDTTM recommends that all operators have a thorough understanding of the principles and limitations of ultrasonic testing. We assume no responsibility for incorrect operational procedure or interpretation of test results. We recommend that any operator seek adequate training prior to using this equipment. Panametrics-NDT offers a full range of training courses including Level I and Level II Ultrasonic Testing, Advanced Detection and Sizing, and Ultrasonic Thickness Gaging. For further information regarding training courses, contact Panametrics-NDT.

1.4 Typographic ConventionsThe following notes and table provide a list of the typographic conventions that appear in this document.

Warning: This information indicates danger and the possibility of personalinjury.

Caution: This information indicates that loss of data or equipment damage can occur.

Note: This information provides explanatory information.m~=@=VNMJOPV` NV

j=PTai=mirpTip: This information provides helpful guidelines for easy operation.

1.5 Related DocumentationThe Model 37DL PLUS works with the WIN37DL PLUS Interface Program. For more information about this software program, refer to the following instruction manual: WIN37DL PLUS Interface Program, Part Number 910-249A

1.6 If You have Documentation CommentsPanametrics-NDT is always interested in improving its documentation. We value your comments about this manual and other Panametrics-NDT documentation.Simply fill out the survey at the back of this manual and send your documentation comments to us by using one of the following methods:

Send comments to Panametrics-NDT, NDT Marketing Department, Attention: Technical Publications.

Contact us at [email protected].

Convention Description

Courier Font Used for file names, lines of code, names of processes, and commands.

Heavy courier Used for command line user input.

Bold Used for textual parts of graphical user interface, including menu items, buttons, toolbar names, modes, options, and tabs.

Italics Used for screen/window names, dialog boxes and document titles.

Bold Italics Used for emphasis.

[Bold] (Square Brackets with Bold)

Used for instrument keys on the keypad.

(Angle Brackets) With italics text, used for variable data.

Used for showing the next sequential step.

Table 1 Typographic ConventionsOM

m~In all your correspondence, please include the title of the document, its part number, release date, and the specific section upon which you are commenting.

1.7 Revision HistoryThis document may require updating because of corrections or changes to the product. Publication dates, printed on the front cover, are updated when a change is made to this document. In addition, the document number is also changed to reflect the revision.The table below shows a list of all revisions for this document.

1.8 Technical HelpContact Panametrics-NDT at [email protected].

Date Issue Release version

May 2003 910-239A First release (preliminary).June 2003 910-239B Second release.

January 2004 910-239C Revision

Table 2 Revision Historym~=@=VNMJOPV` ON

j=PTai=mirpOO

a=_~=d~=l~2 Defining Basic Gage OperationThis chapter describes how to get started using basic Model 37DL PLUS operations.Topics are as follows: Summarizing Keypad Functions Identifying Display Elements Enabling Auto Power Off Using the Battery Pack Monitoring the Battery Charge Charging the Battery Pack Replacing the Battery Pack Using AA Batteries

2.1 Summarizing Keypad Functions

Figure 1 Model 37DL PLUS Keypad

The figure above shows the full keyboard layout. The following table lists all the keystroke functions available from the Model 37DL PLUS keyboard and is divided into two groups. The first group consists of single keystroke functions and the second group consists of multiple keystroke functions, which are shown grouped together and must be pressed sequentially on the gage.m~=@=VNMJOPV` OP

j=PTai=mirpKey Key Color Function

Green Power On/Off - Turns the gage on and off.

Yellow Zero - Compensates for transducer zero or enables step block zero calibration.

Yellow Cal - Switches the gage into the semi-automatic step block Calibration mode.

Yellow Velocity - 1) Displays and enables changing the sound velocity calibration for a particular material. 2) In ID Edit mode only, [VEL] deletes the character at the cursor.

Note: When using Thru-Coat, press [VEL] twice to view and set the coating velocity.

-

Yellow Numeric Keys - Enters numeric values from 0-9.

Red Measurement/Reset - Completes the current operation and switches the gage to Measurement mode.

Blue Range - Changes the waveform display range to the next available value.

Blue Zoom - 1) Changes the waveform display range so that the region immediately surrounding the measured echo is shown at maximum magnification. 2) In the ID Edit mode only, [ZOOM] inserts a blank space at the cursor.OQ

Table 3 Keypad Definitions

a=_~=d~=l~Blue Freeze - Causes the displayed waveform to immediately hold until reset.

Orange Backlight - Controls the waveform display backlight.

Gray Enter - Used to select highlighted items and accept entered values.

Green Up Arrow - 1) Adjusts the value of a selected parameter upward. 2) Selects the next higher entry in a chosen list.

Green Down Arrow - 1) Adjusts the value of a selected parameter downward. 2) Selects the next lower entry in a chosen list.

Green Left Arrow - 1) Lowers the value of a selected parameter. 2) Moves the character and highlights the cursor one space to the left during the ID Edit mode.

Green Right Arrow - 1) Increases the value of a selected parameter. 2) Moves the character and highlights the cursor one space to the right during the ID Edit mode.

Brown File - Opens File Options dialog box where you can manage files using the following functions: open, create, copy, delete, send, edit/rename, note/copy, and reports.

Brown Save - Stores measurements/waveforms in the datalogger at the current ID number.

Key Key Color Function

Table 3 Keypad Definitions (Continued)m~=@=VNMJOPV` OR

j=PTai=mirpTan Send - Initiates transmission of stored data to a computer or printer.

Tan ID number (Identification Number) - Allows access to several functions related to changing ID numbers.

Gray 2nd F - When pressed with a key that has dual functions (the main function written on the key; the secondary function written above the key), the secondary function becomes active.

Multiple Keypress Functions

Gray

Yellow

Setup Mode - Allows user to modify gage parameters and perform special test functions.Options in the Setup mode include:

Measurement B-Scan/DB Grid Avg/Min Measure Temp Compensation Communication Diagnostics Resets Clock

Gray

Yellow

Extended Blank - Prevents erroneous measurements from occurring within an extended blank period, which you can set using the waveform display.

Gray

Yellow

Recall Setup - Recalls a single element transducer setup.


Table 3 Keypad Definitions (Continued)OS

a=_~=d~=l~Gray

Yellow

Fast - Increases the measurement and thickness/waveform display update rate from 4 per second up to 20 per second.

Gray

Yellow

Min/Max Measure - Selects Min Meas mode, Max Meas mode, or Default Meas mode.

Gray

Yellow

Status - Shows an information screen with the following data:1) Software version2) Available memory

Gray

Blue

Temperature - Allows you to enter the current material temperature allowing the gage to compensate for changes in sound velocity using the Temp Compensation feature.

Gray

Yellow

Alarm - Views, enables, and allows changing alarm setpoints.

Gray

Yellow

Differential - Views, enables and allows changing the differential reference value.


Table 3 Keypad Definitions (Continued)m~=@=VNMJOPV` OT

j=PTai=mirpYellow

Yellow

Calibration Lock - Controls the calibration key lock when you press [6] and [3] simultaneously.

Gray

Orange

Waveform - Stores a measurement and waveform in the datalogger at the current ID number.

Gray

Tan

Print - Prints an image of the display including the waveform with the current thickness.

Gray

Tan

Note - Allows you to create or select comments to store at an ID number location.

Gray

Tan

Clear Memory - Acts as an alternative method to erase an entire file. Also used to erase a range of data in a file or a single ID number location.

Gray

Blue

Delay - Adjusts the beginning of the waveform display to some other value to help center echoes that are further out in time.


Table 3 Keypad Definitions (Continued)OU

a=_~=d~=l~2.2 Identifying Display ElementsThe gage screen is a Liquid Crystal Display (LCD) and best viewed from straight above or slightly below the surface rather than from the side. The display may be slower at temperatures below 32oF (0oC).

The figure below identifies the various sections of the Model 37DL PLUS display.

Figure 2 Identifying Display Elements

Gray

Orange

Opt - Allows you to input a known thickness of material and the gage automatically optimizes the gain for a D79X dual element transducers.


Table 3 Keypad Definitions (Continued)

ID Location

Measurement Marker

Delay

Measurement Mode/Update Rate Thickness

Units

Battery Life

MIN Finder

Rectification

Zoom FlagFreeze Flag

Comments/ID number

Date and Time

File Name

Min/Max

Alarm

Stored Thickness

Gainm~=@=VNMJOPV` OV

j=PTai=mirpGeneral Information: The main function of the display is to show the echo waveform and to display the thickness reading received by the transducer as measurements are made. The received echoes are amplified before being shown on the display. The waveform trace is called the A-Scan display. This type of waveform allows a skilled operator to verify that the gage signal being used to make a thickness measurement is the correct backwall echo and not noise, material anomaly, or the second multiple echo. This verification waveform along with all pertinent calibration information can be stored with the thickness value in the internal datalogger. If you are an experienced operator, you can also use the echo waveform to learn more about the quality of the measurement than is given just by the thickness value, which includes observation of indications that may be too small to be measured by the gage.Press [FREEZE] to freeze the display. Adjust the thickness range (horizontal scale) or expand the measured echo by using the Zoom mode.When operating in the Minimum or Maximum Measurement mode, the waveform associated with a minimum or maximum reading is internally captured and recalled to the screen when the transducer is uncoupled. Furthermore, any waveform that is stored in the datalogger memory can be shown on the waveform display for review or comparison to the current measured waveform. Such recalled waveforms may have been recently saved or may have been downloaded from a computer data file.Thickness Display: The top portion of the display shows the current Filename, ID number, Comments, and any previous stored thickness values.The lower part of the display functions as a general purpose thickness measurement display where it acts as a control panel for calibrating and setting up the gage in addition to displaying status conditions, error messages, and warnings. The large characters are used to show numerical values such as thickness and velocity. This area also shows flags that describe the numeric data and/or the gage operating modes, and the battery status.

2.3 Using the Battery PackThe Model 37DL PLUS gage is powered by an internal 6V battery pack using rechargeable NiCad batteries or 6 AA alkaline batteries. The NiCad battery pack is recharged through the Model 36CA PLUS Charger/AC Adapter unit that is supplied with the gage. The 36CAPLUS does not recharge the alkaline batteries; you must replace the alkaline batteries after discharging. The Model 37DL PLUS can also be operated directly from AC power using the Charger/Adapter.The batteries are fully charged when shipped, but for maximum operating time, recharge before using. Recharge batteries only with the Model 36CA PLUS Charger/Adapter supplied with the gage. Other chargers may reduce battery life and/or damage the battery and void the warranty on the gage.Even a discharged battery maintains the internal stored calibration values and thickness data for several weeks. However, do not leave discharged batteries for long periods of time in order to maintain optimum battery life.PM

a=_~=d~=l~2.4 Monitoring the Battery ChargeThe gage operates for at least 25 hours between charges under normal conditions (when FAST mode is off and the backlight is off). The battery charge indicator, or battery status meter, displays the percentage of battery remaining capacity in bottom right hand corner of the display. Remember that if the battery is charged for at least 2 hours, then 99% charge indication corresponds to over 25 hours of operation. However, if the battery is charged for less than 2 hours, then 99% charge indication corresponds to proportionally fewer hours of operation. When there is insufficient battery charge, the gage automatically powers off to prevent damage to the battery.

Note: The battery charge indicator shows a rotating bar when the charger isplugged in, however it does not indicate when a full charge is reached. Thegage displays a C indicating that the battery is charging. The gage displaysa S indicating that charging is complete.

2.5 Charging the Battery PackThe gage operates for at least 25 hours between charges under normal conditions (4Hz measure update rate in Mode 1 with the Backlight turned off.) The current battery status is always indicated in the lower right corner of the gage display. This indicator shows a percentage of the battery charge remaining. The maximum percentage that can be displayed is 99%. (See Monitoring the Battery Charge on page 31.)When the battery is insufficiently charged, the gage automatically powers off to prevent damage to the battery. Recharge the battery using the Model 36CA PLUS charger.To charge the NiCad battery pack, plug the 36CA PLUS AC Charger Adapter into an appropriate source of AC power, and plug the cable from the Charger/Adapter into the charger socket on the top of the gage. The battery recharges whether the gage is OFF or ON. Do not attempt to use the battery charge indicator to determine when batteries have reached full charge. For a fully discharged battery, allow approximately 2 hours to fully recharge. You can use the gage for normal measurements while the Charger/AC Adapter is connected with little effect on the recharge time.

2.6 Replacing the Battery PackAfter several hundred recharges, the NiCad batteries lose the ability to hold a full charge.To replace an old battery pack with a new battery pack, follow these steps:

1. Open the battery panel on the back of the gage case by loosening the four captive screws.

2. Remove the battery, once the case is open, by gently pulling the black strap at the right end of the battery.

3. Remove the plug that connects the wire from the battery pack to the circuit board of the gage.m~=@=VNMJOPV` PN

j=PTai=mirp4. Connect the new battery pack, and install with the label side facing outward.5. Replace the battery panel and tighten the screws.

Note: The internal memory is maintained for over an hour when the battery isremoved. If a new battery is installed in less than an hour, no calibration orthickness data is lost.

2.7 Using AA BatteriesNon-rechargeable alkaline batteries are available for use with the Model 37DL PLUS.To replace the NiCad Rechargeable batteries with alkaline batteries, follow these steps:

1. Remove the NiCad pack.2. Insert 6 AA Alkaline batteries into the alkaline battery holder that is provided.3. Connect the Alkaline battery holder to the gage using the same connector as the NiCad

pack.4. Place the Alkaline holder into the battery compartment.5. Replace the battery panel and tighten the screws.

Note: It is also possible to charge the Nicad battery outside of the Model 37DLPLUS using a special external battery charger adapter. Contact Panametrics-NDTTM for more information about external battery charging.PO

p=r=`~~==aTVu=p=a~=b=q~3 Set Up Calibration with D79X Series Dual Element TransducersThis section demonstrates how to make basic thickness measurements using dual element transducers with the Model 37DL PLUS. The unit ships from the factory set up with default conditions for the transducer(s) you have purchased using an approximate sound velocity for the stainless steel test block provided with the gage. You can change Setups easily after becoming familiar with the more sophisticated features of the gage. The default conditions are selected to facilitate gage usage for your applications. This section contains a detailed explanation of these default conditions.Topics are as follows: Getting Started Making Thickness Measurements Calibrating with Dual Element Transducers Performing a Thru-Coat Calibration

3.1 Getting StartedTo setup the Model 37DL PLUS for the first time, use the test block included with the gage and the default settings, and follow these steps:

1. Plug the transducer into the connector on top of the 37DL PLUS case.

Note: The transducer cable connector must be positioned with center pin down.When unplugging a transducer, pull ONLY on the molded plug, doNOT pull the cable.

2. Press [ON/OFF] to power on the gage. Do NOT couple the transducer to the test piece yet.The message do appears on the thickness display. This message means that the gage requires the following transducer ZERO compensation steps to automatically compensate for the current transducer delay line length.m~=@=VNMJOPV` PP

j=PTai=mirpFigure 3 Initial Display Screen

3. Wipe all couplant from the tip of the transducer.4. Press [ZERO].

The current units are indicated on the right of the thickness display in either inches (IN) or millimeters (MM).

Figure 4 Changing Measurement Units

To change the measurement units, follow these steps:

1. Press [2nd], [0] (Setup).2. Press [ ] and [ ] to select measurement. Press [ENTER].3. Press [ ] and [ ] to select units.4. Press [ ] or [ ] to select the English or Metric option.5. Press [MEAS].

You are now ready to make measurements based on the default calibration and settings.PQ

p=r=`~~==aTVu=p=a~=b=q~Note: The steps above are not a substitute for performing a proper calibration. Thedefault calibration is an approximate calibration for the stainless steel testblock included with the gage. Generally, it yields results that are better than95% accurate. However, for greatest accuracy perform both a velocity andzero calibration for the test material. (See Material Velocity and ZeroCalibration on page 36.)

3.2 Making Thickness MeasurementsTo begin making thickness measurements, follow these steps:

1. Apply couplant to the test block or material at the spot to be measured.In general, smooth material surface allows for using thinner couplants such as propylene glycol, glycerin, or water. Rough surfaces require more viscous couplant such as gel or grease. Special couplants are required for high temperature applications.

2. Press the tip of the transducer to the surface of the test material. Use moderate to firm pressure and keep the transducer as flat as possible on the material surface.

3. Read the material thickness on the thickness display.

Note: For highest accuracy, you must perform both a velocity and zero calibration.(See Material Velocity and Zero Calibration on page 36.)

3.3 Calibrating with D79X Series Dual Element TransducersCalibration is the process of adjusting the gage so that it measures accurately on a particular material, using a known transducer at a given temperature. The Model 37DL PLUS calibration procedure falls into the following three categories: Transducer Zero Compensation: Calibrate for the sound transit time in each of the

dual transducer delay lines. This compensation varies in each unit and withtemperature. You must perform the Transducer Zero Compensation procedure whenthe unit is powered on, when the transducer is changed, and when the transducertemperature changes significantly.

Material Velocity Calibration (Cal Vel): Perform a Cal Vel using a thick test block ofthe measured material with known thickness or by entering the previously determinedmaterial velocity manually. You must perform this procedure for each new measuredmaterial.

Zero Calibration (Cal Zero): Perform a Cal Zero using a thin test block of themeasured material with known thickness. Unlike the Transducer Zero Compensationand the Cal Vel, this procedure is not required unless you need the best absoluteaccuracy (better than 0.004" or 0.10mm), and you only need to do it once for eachm~=@=VNMJOPV` PR

j=PTai=mirpnew transducer and material combination. You do not have to repeat the Cal Zerowhen the transducer temperature changes; Transducer Zero Compensation isresponsible for that task. (See Transducer Zero Compensation on page 36.)

3.3.1 Transducer Zero Compensation

Perform a Transducer Zero Compensation whenever the message do and the ZERO flag are shown on the thickness display (do ZERO). Additionally, you should also perform this procedure when the transducer temperature has changed significantly.To perform a Transducer Zero Compensation, follow these steps:

1. Wipe any couplant from the transducer face.2. Press [ZERO].

The new zero calibration value appears briefly before returning to the Measurement mode. The zero calibration value is for reference only; it cannot be directly entered or altered.

Note: When measurements are made on surfaces that are significantly above roomtemperature, the zero should be recalibrated on a regular basis. This is lessimportant for transducers Part Number D790(SM), D791(RM), D797(SM),and D798 than for the remaining transducers that have various types of resindelay lines. Typically, there is very little change in sound transit time in thedelays used in D790(SM), D791(RM), D797(SM), and D798 compared withthe delays used in the other transducers provided for use with the Model37DL PLUS.

The frequency that you perform a Zero Compensation procedure depends on the rate of change of the internal temperature of the transducer. This is related to the material surface temperature, frequency of transducer application, length of time the transducer is held in contact with the material, and the accuracy that you want to obtain. For high temperature measurements, Panametrics-NDT recommends that you develop a schedule for Zero Compensation that takes these factors into account. For example, use the D790(SM), D791(RM), or D797(SM) for high temperature applications, minimizing the frequency of the Zero Compensation. (You can also use the D790(SM) and D791(RM) for general purpose applications.) After Zero Compensation, periodically check the accuracy of the measured thickness by using a test block that is the same material and thickness as the material being tested, and make sure the temperature is also the same.

3.3.2 Material Velocity and Zero Calibration

You can use a thick calibration block and a thin calibration block of the same material when you are performing a Material Velocity and Zero Calibration procedure.

Note: You can also achieve a Material Velocity and Zero Calibration procedure byperforming the operation in reverse, for example perform a Cal Zero first andthen a Cal Vel.

To perform a Material Velocity and Zero Calibration procedure, follow these steps:PS

p=r=`~~==aTVu=p=a~=b=q~1. Wipe any couplant from the transducer face.2. Press [ZERO].3. Couple the transducer to the thick calibration block and press [CAL]. 4. Press [VEL] when the thickness reading is stable.5. Uncouple the transducer and enter the thickness of the thick block using the numeric

keypad.6. Couple the transducer to the thin block and press [CAL].7. Press [ZERO] when the reading is stable.8. Uncouple the transducer and enter the thickness of the thin block using the numeric

keypad.9. Press [MEAS/RESET] to complete the calibration and go to the Measurement

mode.

Note: If there is a long-beep from the gage before returning to the Measurementmode and Calibration Error Message appears on the display, then an erroroccurred in the calibration procedure the velocity will NOT be changed.It is probable that the thickness value entered was incorrect.

3.3.2.1 Material Velocity Calibration of a Material of Unknown Sound Velocity

To perform the Material Velocity Calibration, you must use a calibration block made from the same test material to be measured. The test block should be as thick as the thickest section that you are going to measure. Also, make sure the test block is smooth and has parallel front and back surfaces. The thickness of the block must be known exactly.To perform a Material Velocity Calibration, follow these steps:

1. Wipe any couplant from the transducer face.2. Press [ZERO].3. Couple the transducer to the block and press [CAL].4. Press [VEL] when the thickness reading is stable.

The gage will not accept [VEL] if the LOS flag is enabled, which indicates an inadequate transducer signal level.

5. Uncouple the transducer and enter the thickness of the standard using the numeric keys. You can correct an entry error by pressing [0] several times and then entering the correct value.

6. Press [MEAS/RESET] to complete the calibration and return to Measurement mode. If you power off the gage before pressing [MEAS/RESET], the velocity will NOT be updated to the new value; instead the gage will retain the previous current value.m~=@=VNMJOPV` PT

j=PTai=mirpNote: If there is a long-beep from the gage before returning to the Measurementmode and Calibration Error Message appears on the display, then an erroroccurred in the calibration procedure the velocity will NOT be changed.It is probable that the thickness value entered was incorrect.

You can press [VEL] following a Velocity Calibration (or at any time from the Measurement mode) in order to read and record the material velocity for the material. When measuring to this material in the future, you can enter this velocity directly from the keyboard without using the test block.

Note: Sound velocity in all materials changes with temperature. For maximumaccuracy, the calibration block should be at approximately the sametemperature as the samples to be measured unless you are using thetemperature compensation feature.

3.3.2.2 Enter a Known Material Sound Velocity

When preparing to measure a different material of known sound velocity, you can enter the velocity directly without doing a Cal Vel procedure. To enter material velocity when the velocity is known, follow these steps:

1. Press [VEL] from the Measurement mode. The current velocity appears.2. Enter the new velocity using the numeric keys.

You can correct an entry error by pressing [0] several times and then entering the correct value.

3. Press [MEAS/RESET] to complete the entry and return to the Measurement mode. If you power off the gage before pressing [MEAS/RESET], the velocity will NOT be updated to the new value; instead the gage will retain the previous current value.

3.3.3 Zero Calibration

You must use a calibration block of the material to be measured when preparing to do a Zero Calibration. The block should be as thin as the thinnest section of the test material to be measured. If the surface of the test material to be inspected is rough, then roughen the surface of the calibration block to simulate the actual surface to be measured. Rough surfaces generally reduce the accuracy of measurements, but simulating actual surface conditions on the calibration block can help to improve results. The exact thickness of the sample must be known. To perform a Zero Calibration, follow these steps:

1. Wipe any couplant from the transducer face.2. Press [ZERO].3. Couple the transducer to the test block. PU

4. Press [CAL].

p=r=`~~==aTVu=p=a~=b=q~5. Press [ZERO] when the thickness reading is stable.The gage will not accept [ZERO] if the LOS thickness display flag is enabled, which indicates an inadequate transducer signal.

6. Uncouple the transducer and enter the thickness of the standard using the numeric keys. You can correct an entry error by pressing [0] several times and then entering the correct value.

7. Press [MEAS/RESET] to complete the calibration and return to the Measurement mode.If you power off the gage before pressing [MEAS/RESET], the velocity will NOT be updated to the new value; instead the gage will retain the previous current value.

Note: If there is a long-beep from the gage before returning to the Measurementmode and Calibration Error Message appears on the display, then an erroroccurred in the calibration procedure the velocity will NOT be changed.It is probable that the thickness value entered was incorrect.

3.4 Performing a Thru-Coat Calibration Using D7906 and D7908 TransducersThru-Coat is a special feature that measures the true metal thickness of coated or paint materials. This feature only requires a single back wall echo and is recommended for applications on heavy corrosion where the outside of the material is painted. The Thru-Coat feature is available with D7906 and D7908 transducers only.When you power up the unit with a Thru-Coat transducer or change to one of the Thru-Coat transducers, the gage prompts you with a message Zero DO.To setup Thru-Coat parameters, follow these steps:

1. Wipe the couplant from the transducer face.2. Press [Zero]. The Thru-Coat Setup dialog box opens.

Figure 5 Opening the Thru-Coat Setup Dialog Box

3. Press [ ] or [ ] to select On or Off from the Thru-Coat Enable option. Press [ENTER].

THRU COAT SETUP THRU COAT ENABLE OFF ON COATING THK DISPLAY OFF ON

CANCEL OK m~=@=VNMJOPV` PV

j=PTai=mirp4. Press [ ] or [ ] to select On or Off from the Coating THK Display option. Press [ENTER]. On: Displays the material thickness and the Coating thickness at the same time.Off: Ignores the thickness of the coating, displaying the true metal thickness.

5. Press [ ] or [ ] to select the OK button. Press [ENTER].The gage enters the Thru-Coat Measurement screen and is ready to take thickness measurements.

3.4.1 Thru-Coat (Material Only) CalibrationUse the steps below if you chose to not show the coating thickness or if you want to use a default velocity value for the coating. We recommend that you perform the Thru-Coat (Material and Coating) Calibration in order to achieve the best accuracy of the coating thickness.To perform a Thru-Coat (Material only) calibration, follow these steps:

1. Couple the transducer to a thick calibration block. Press [CAL] while you are in the Thru-Coat Measurement mode.

2. Press [VEL] when the reading is stable.3. Uncouple the transducer from the material and enter the thickness of the block using

the numeric keypad.4. Couple the transducer to a thin calibration block. Press [CAL].5. Press [ZERO] when the reading is stable.6. Uncouple the transducer from the material and enter the thickness of the block using

the numeric keypad.7. Press [MEAS] to complete the calibration.

3.4.2 Thru-Coat (Material and Coating) Calibration Use the steps below if you chose to show the coating thickness and want to calibrate for the sound velocity of the coating. This calibration provides the best accuracy of the coating and material thickness.

Note: This calibration requires two samples of known thickness of the material tobe tested and a coated sample where the coating thickness is known.

To perform a Thru-Coat (Material and Coating) calibration, follow these steps:

1. Couple the transducer to a thick calibration block. Press [CAL] while in the Thru-Coat Measurement mode.

2. Press [VEL] when the reading is stable.3. Uncouple the transducer from the material and enter the thickness of the block using

the numeric keypad.QM

p=r=`~~==aTVu=p=a~=b=q~4. Couple to the transducer to a thin calibration block. Press [CAL].5. Press [ZERO] when the reading is stable.6. Uncouple the transducer from the material and enter the thickness of the block using

the numeric keypad. Press [CAL]. 7. Couple the transducer to a coated sample when the reading is steady and press [VEL].8. Uncouple the transducer and enter the thickness of the coating using the numeric

keypad.9. Press [MEAS] to complete the calibration.m~=@=VNMJOPV` QN

j=PTai=mirpQO

p=r=~=`~~==bj^q=q~4 Setting Up and Calibrating with EMAT TransducersThis section provides background information regarding EMAT transducers and how to make basic thickness measurements using the 37DL PLUS and the E110-SB transducer. An EMAT (Electro Magnetic Acoustic Transducer) uses the Magnetostrictive Principle to generate shear wave sound energy in ferrous metals that are externally coated with high temperature oxide scale. The E110-SB transducer will not work on nonferrous metal or in cases where the external surface is not coated with oxide scale. The EMAT transducer uses the external scale to generate shear wave sound energy and does not require the use of ultrasonic couplant. If the scale is not fully bonded to the surface of the steel, the shear wave sound energy will not be transmitted into the wall.The EMAT transducer is an effective way of determining the estimated thickness of steel boiler tubes without removing the external scale. Initial thickness measurements with an EMAT transducer can determine if the wall is already below its specified minimum thickness, thus saving the time that would have been spent removing the external oxide from a boiler tube that will ultimately be replaced. The EMAT transducer creates a non-focused signal and is designed to give a good estimate of the remaining (+/-0.010 or +/-0.25 mm) wall thickness. Because of the non-focused nature of the transducer, it is relatively insensitive to small internal pits. The minimum thickness measurement capability of the 37DL PLUS and EMAT transducer is approximately 0.080 (2.0mm) depending on material properties.Removing the external oxide and using a standard single or dual element transducer will always

Manual 37DLP

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