GE MFE DMS 2

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4. Measuring Thickness

Page 116 DMS 2 Operating Manual

FIGURE 4-11—The effect of increasing and decreasing the RANGE of an A-scan is shown here.

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Table of Contents8
Getting Started12
How to Use this Manual12
Ten Steps to Launch Your Gauge12
How the DMS 2 Measures Thickness25
Important Features of the DMS 230
What's in this Manual31
Understanding the DMS 2 Keyboard, Menu System, and Displays33
Recognizing Displays33
Menu System35
Display Screen Features46
Keypad Features54
Setting up the DMS 256
Battery Installation56
Initial Instrument Setup57
Display Adjustment59
Global Settings61
OPER (Operation) Settings63
Thickness Gauging Setup66
Probe Type/Measurement Mode Specification66
ALARM Settings73
Probe Zeroing Procedures76
Calibration Procedures77
Locking the Instrument Settings80
Storing Data in the Data Recorder82
Data Recorder Capabilities82
Building a Master Comment List85
And Using the Virtual Keyboard85
Creating a Data File86
Editing the Names of Elevations, Locations, and Other File Content Labels93
Storing A-Scans with Thickness Measurements95
Additional Information on Working with Data Files96
Measuring Thickness101
Working in the Test Mode102
Activating the Test Mode102
Freezing the A-Scan Display (TEST-FREEZE)105
Using the Minimum-Capture Mode for Enhanced Measurement106
Measuring and Recording Thickness108
Opening an Existing Data File108
Activating the Test Mode and Storing Measurements109
Closing a Data File112
Data Enhancement Features113
Attaching Comments to a Data Point113
Recording Detailed Measurements with a Micro-Grid116
Editing Existing Files with the Append, Insert, and Delete Functions118
Changing the Digital Thickness Display to Indicate an Uncoupled Probe (I/O - LAST R)121
Adjusting the A-Scan Display122
How the A-Scan Display Can be Modified122
Adjusting the Instrument's Gain125
Adjusting Range126
Positioning the A-Scan with DELAY128
Purpose of the A-Gate and B-Gate129
Choosing the Rectification Method135
Working with B-Scan Thickness Mapping137
Saving, Recalling, Clearing TG Setups (Parameter Sets)141
Working with Stored Data146
Introduction to the Data Recorder (DR) Mode146
Selecting an Existing Data File151
Interpreting the DR Mode / RECORD Submenu Display151
Closing (De-Selecting) a Data File154
Deleting a Data File154
Navigating in the Data Recorder Mode155
Changing the Active Data File155
Navigating from Point to Point Within a Data File156
Moving to a Specific Position Within a Data File156
Searching for Specific (Tagged) Attributes Within a Data File157
Automatic Advance Features161
Adjusting the Data Recorder (NAV Window) Display165
Storing and Recalling A-Scans166
Modifying a Data File's Organization and Contents167
Editing Existing Files with the Append, Insert, and Delete Functions168
Modifying Data File Content Labels and Notations172
Changing Thickness Measurement Values from the DR Mode174
Setting Thickness Alarms175
Statistical Evaluation of Data File Contents176
Checking the Instrument's Available Memory177
Generating Reports, Printing Data, and Connecting to External Devices178
Interfacing with External Devices178
Specifying Printers178
Connecting to a Personal Computer179
Sending Data Directly to a Printer179
Generating Reports180
Selecting the Report Type181
Transmitting a Report182
Specifications183
DMS 2 Specifications183
Probe Specifications186
Dual Element Probes186
Single Element Probes188
Recommended Probes for the D-Multi Mode189
Application Notes190
General Notes190
Flaws190
Surface Conditions190
Curved Surfaces190
Thickness Measurement on Hot Test Pieces191
Measurement through Coatings192
Topcoat (Measurement Mode) (Optional)195
Specify Topcoat Probe and Measurement195
Mode195
Calibrating for T-COAT Measurement Mode196
Topcoat Probe Zeroing Procedure197
Calibrating Coating-Material Acoustical Velocity198
Identifying the Velocity Reference Block199
Auto-V Measurement Mode200
Specifying AUTO-V Measurement Mode200
Warranty and Worldwide Service201
Appendixv A: Hardware Assembly Instructions203
Appendix B. Choosing the File Type204
Appendix C: Helpful Hints213
Appendix D: Upgrading the DMS 2/DMS 2E Instrument215
Index217

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