GE DMS Go+ User manual

DMS Go+
Technical Reference and Operating Manual

This edition 4 (05/2014) applies to the software version 3.20 (April 2, 2014)
You will find the software version and the serial number of your instrument at CONFIG - ABOUT.
© GE Sensing & Inspection Technologies GmbH | Technical content subject to change without notice.

DMS Go+ Edition 4 (05/2014) 0-3
Function groups and functions

0-4 Edition 4 (05/2014) DMS Go+
Function groups and functions (cont'd)

DMS Go+ Edition 4 (05/2014) 0-5
Status display icons Power level indicators
Icon Meaning
SD memory card is inserted,
flashes when the SD card is accessed
Display memory active (Function FREEZE),
display is „frozen“.
Measurement mode S-IP, DUAL
Measurement mode S-PEAK, S-FLANK
Measurement mode DUAL-MULTI
Alarm threshold exceeded or fallen below
Reminder for calibration
Icon Meaning
Battery charge level,
remaining operating time
in hours (approximate value)
Charger/power adapter is connected,
percentage of battery charge level
(approximate value)
Warning: Low battery charge level,
remaining operating time
in minutes (approximate value)

0-6 Edition 4 (05/2014) DMS Go+
Basic key functions
1Function key 1, functions are context-dependent
2Function key 2, functions are context-dependent; keys 1and 2simultaneously: Save screen shot
3Keypad, navigation between function groups and functions, changing settings
4Function key 3, functions are context-dependent
5Function key 4, function individually assignable (CONFIG – FUNC KEY),
1
2
3
4
5

DMS Go+ Edition 4 (05/2014) 0-7
Navigation
Keys Function
Navigation between function groups,
adjusting values
Navigation between functions
within a function group
Changing the display orientation (landscape - portrait)

0-8 Edition 4 (05/2014) DMS Go+

Contents
DMS Go+ Edition 4 (05/2014) 0-1
0 Overview
Function groups and functions . . . . . . . . . 0-3
Function groups and functions (cont'd). . . 0-4
Status display icons . . . . . . . . . . . . . . . . . 0-5
Power level indicators. . . . . . . . . . . . . . . . 0-5
Basic key functions . . . . . . . . . . . . . . . . . . 0-6
Navigation. . . . . . . . . . . . . . . . . . . . . . . . . 0-7
1Introduction
1.1 Safety information . . . . . . . . . . . . . . . . . 1-2
Battery operation . . . . . . . . . . . . . . . . . . . 1-2
Software . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Defects/errors and exceptional stresses. . 1-3
1.2 Important information on
wall thickness measurement . . . . . . . . . 1-4
Prerequisites for the use of ultrasonic
thickness gauges . . . . . . . . . . . . . . . . . . . 1-4
Limits of ultrasonic testing . . . . . . . . . . . . 1-5
Ultrasonic wall thickness measurement . . 1-5
Effect of the test object material . . . . . . . . 1-6
Effect of temperature variations . . . . . . . . 1-6
Measurement of remaining wall thickness 1-6
Choice of the probe. . . . . . . . . . . . . . . . . . 1-7
Use of couplants . . . . . . . . . . . . . . . . . . . . 1-7
Doubling of measured value . . . . . . . . . . . 1-7
1.3 Important information on wall thickness
measurement using the DMS Go+ . . . . 1-8
Probe zero offset. . . . . . . . . . . . . . . . . . . . 1-8
Measuring accuracy . . . . . . . . . . . . . . . . . 1-8
Probes. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
1.4 The DMS Go+ . . . . . . . . . . . . . . . . . . . . 1-12
Overview of functions . . . . . . . . . . . . . . . 1-12
Options . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
1.5 Wall thickness measurement
using the DMS Go+. . . . . . . . . . . . . . . . 1-15
Principle of ultrasonic measurement. . . . 1-15
Dual mode (measurement mode DUAL). 1-16
Single-element mode (measurement
modes S-IP, S-PEAK, S-FLANK) . . . . . . 1-17
Multi-echo mode
(measurement mode DUAL-MULTI) . . . . 1-17

Contents
0-2 Edition 4 (05/2014) DMS Go+
TopCOAT method
(measurement mode TOP-COAT) . . . . . 1-18
Auto-V (measurement mode AUTO-V) . . 1-19
B-scan. . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
Display orientation . . . . . . . . . . . . . . . . . 1-21
1.6 The USM Go+ . . . . . . . . . . . . . . . . . . . . 1-22
1.7 How to use this manual . . . . . . . . . . . . 1-22
Overview . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
1.8 Layout and presentation in
this manual . . . . . . . . . . . . . . . . . . . . . . 1-24
Attention and note symbols. . . . . . . . . . . 1-24
Listings . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
Operating steps. . . . . . . . . . . . . . . . . . . . 1-24
2Standard package and accessories
2.1 Standard package . . . . . . . . . . . . . . . . . . 2-2
2.2 Add-on functions . . . . . . . . . . . . . . . . . . 2-3
2.3 Preconfigured function packages . . . . . 2-4
2.4 Recommended probes . . . . . . . . . . . . . . 2-5
2.5 Recommended probe cables . . . . . . . . 2-10
2.6 Recommended accessories. . . . . . . . . 2-12
3Initial start-up
3.1 Instrument positioning . . . . . . . . . . . . . . 3-2
3.2 Power supply. . . . . . . . . . . . . . . . . . . . . . 3-2
Operation with charger/power adapter . . . 3-2
Operation using batteries . . . . . . . . . . . . . 3-4
Charging the batteries. . . . . . . . . . . . . . . . 3-8
3.3 Connecting a probe . . . . . . . . . . . . . . . . 3-9
Dual-type connectors . . . . . . . . . . . . . . . . 3-9
Single-type connectors . . . . . . . . . . . . . . . 3-9
3.4 Inserting the SD memory card . . . . . . . 3-10
3.5 Starting the DMS Go+ . . . . . . . . . . . . . . 3-11
Powering On . . . . . . . . . . . . . . . . . . . . . . 3-11
Powering Off . . . . . . . . . . . . . . . . . . . . . . 3-12
Factory default setting (Reset) . . . . . . . . 3-12

Contents
DMS Go+ Edition 4 (05/2014) 0-3
4Principles of operation
4.1 Overview of operator's controls . . . . . . 4-2
4.2 Display screen . . . . . . . . . . . . . . . . . . . . 4-3
Display modes . . . . . . . . . . . . . . . . . . . . . 4-3
Functions on the display screen . . . . . . . . 4-5
Icons and information . . . . . . . . . . . . . . . . 4-5
Display of reading . . . . . . . . . . . . . . . . . . . 4-6
4.3 Navigation and function keys . . . . . . . . 4-7
Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Function keys . . . . . . . . . . . . . . . . . . . . . . 4-7
Power key . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Key combinations . . . . . . . . . . . . . . . . . . . 4-8
4.4 Operational concept . . . . . . . . . . . . . . . . 4-9
Changing the display views . . . . . . . . . . . 4-9
Selecting and setting functions . . . . . . . . 4-10
5Operation
5.1 Default settings . . . . . . . . . . . . . . . . . . . . 5-2
Language setting . . . . . . . . . . . . . . . . . . . 5-2
Units setting . . . . . . . . . . . . . . . . . . . . . . . 5-3
Resolution setting . . . . . . . . . . . . . . . . . . . 5-3
Radix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Last reading . . . . . . . . . . . . . . . . . . . . . . . 5-4
Date format, Date, and Time. . . . . . . . . . . 5-5
Selecting the instrument orientation . . . . . 5-6
Display orientation . . . . . . . . . . . . . . . . . . 5-6
Assignment of function key 4 . . . . . . . . . . 5-7
Function lockout . . . . . . . . . . . . . . . . . . . . 5-8
Password protection . . . . . . . . . . . . . . . . 5-10
Power saving mode . . . . . . . . . . . . . . . . 5-12
Configuring data boxes . . . . . . . . . . . . . . 5-13
5.2 Default settings of the display. . . . . . . 5-15
Setting the brightness . . . . . . . . . . . . . . . 5-15
Selecting the color scheme. . . . . . . . . . . 5-16

Contents
0-4 Edition 4 (05/2014) DMS Go+
5.3 Operating modes and views . . . . . . . . 5-17
Changing the operating mode or view . . 5-17
5.4 Saving the settings . . . . . . . . . . . . . . . . 5-18
Loading settings . . . . . . . . . . . . . . . . . . . 5-19
Deleting settings . . . . . . . . . . . . . . . . . . . 5-19
5.5 Preparing for measurements . . . . . . . . 5-20
Choosing the probe type. . . . . . . . . . . . . 5-21
Choosing the measurement mode . . . . . 5-22
5.6 Carrying out the calibration . . . . . . . . . 5-24
Calibrations . . . . . . . . . . . . . . . . . . . . . . . 5-24
Probe zero offset. . . . . . . . . . . . . . . . . . . 5-25
Calibration to zero and to sound velocity 5-27
Setting the sound velocity . . . . . . . . . . . . 5-31
5.7 Carrying out measurements . . . . . . . . 5-32
5.8 A-scan configuration . . . . . . . . . . . . . . 5-33
Setting the display range . . . . . . . . . . . . 5-33
Setting the gain . . . . . . . . . . . . . . . . . . . . 5-34
Selecting the display update rate . . . . . . 5-35
Selecting the rectification mode . . . . . . . 5-36
Setting the probe delay . . . . . . . . . . . . . . 5-36
5.9 Setting the gates . . . . . . . . . . . . . . . . . . 5-37
Task of the gates. . . . . . . . . . . . . . . . . . . 5-37
Gate start . . . . . . . . . . . . . . . . . . . . . . . . 5-37
Gate width . . . . . . . . . . . . . . . . . . . . . . . . 5-38
Gate threshold. . . . . . . . . . . . . . . . . . . . . 5-38
5.10 Configuring alarm functions . . . . . . . . 5-39
Minimum value alarm . . . . . . . . . . . . . . . 5-39
Maximum value alarm . . . . . . . . . . . . . . . 5-39
5.11 MIN/MAX mode . . . . . . . . . . . . . . . . . . . 5-40
Switching the MIN/MAX mode on . . . . . . 5-41
Clearing a sequence of measurements . 5-41
5.12 Thickness profiles with the B-scan . . . 5-42
Switching the B-scan display on . . . . . . . 5-43
Setting the display time . . . . . . . . . . . . . . 5-43
Setting the waiting time . . . . . . . . . . . . . . 5-44
Minimum value line . . . . . . . . . . . . . . . . . 5-44
Recording a B-scan. . . . . . . . . . . . . . . . . 5-45

Contents
DMS Go+ Edition 4 (05/2014) 0-5
5.13 Differential value display . . . . . . . . . . . 5-46
Switching the differential value
display on . . . . . . . . . . . . . . . . . . . . . . . . 5-46
5.14 A-scan view . . . . . . . . . . . . . . . . . . . . . . 5-47
5.15 Other functions . . . . . . . . . . . . . . . . . . . 5-48
Saving calibration block data . . . . . . . . . 5-48
Calibration reminder . . . . . . . . . . . . . . . . 5-50
Temperature compensation . . . . . . . . . . 5-51
Display freeze (FREEZE) . . . . . . . . . . . . 5-52
Gate magnifier (ZOOM) . . . . . . . . . . . . . 5-53
5.16 Enabling options (Upgrade). . . . . . . . . 5-54
6Data Recorder
6.1 Overview of functions . . . . . . . . . . . . . . 6-2
6.2 File types . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
File type LINEAR . . . . . . . . . . . . . . . . . . . 6-4
File type CUSTOM LINEAR . . . . . . . . . . . 6-5
File type CUSTOM POINT . . . . . . . . . . . . 6-5
File type GRID . . . . . . . . . . . . . . . . . . . . . 6-6
File type CUSTOM GRID . . . . . . . . . . . . . 6-6
File type BOILER . . . . . . . . . . . . . . . . . . . 6-7
6.3 Master comment list . . . . . . . . . . . . . . . . 6-8
Creating a master comment list . . . . . . . . 6-8
Changing master comments . . . . . . . . . . . 6-9
6.4 Working with files . . . . . . . . . . . . . . . . . 6-11
Creating a new file . . . . . . . . . . . . . . . . . 6-11
Deleting files . . . . . . . . . . . . . . . . . . . . . . 6-13
6.5 Saving measurement results . . . . . . . . 6-14
Loading a file. . . . . . . . . . . . . . . . . . . . . . 6-14
Saving readings . . . . . . . . . . . . . . . . . . . 6-15
Special measuring point functions . . . . . 6-16
Selecting individual measuring points. . . 6-16
Clearing a reading. . . . . . . . . . . . . . . . . . 6-17
Overwriting readings . . . . . . . . . . . . . . . . 6-17
Saving readings with A-scans. . . . . . . . . 6-18
Adding comments . . . . . . . . . . . . . . . . . . 6-20
Editing a file comment list . . . . . . . . . . . . 6-22

Contents
0-6 Edition 4 (05/2014) DMS Go+
6.6 Editing files . . . . . . . . . . . . . . . . . . . . . . 6-24
Expanding the file capacity . . . . . . . . . . . 6-24
Deleting parts of a file . . . . . . . . . . . . . . . 6-26
Editing header data. . . . . . . . . . . . . . . . . 6-27
Adding a Microgrid . . . . . . . . . . . . . . . . . 6-29
Automatic advance . . . . . . . . . . . . . . . . . 6-33
6.7 Evaluations . . . . . . . . . . . . . . . . . . . . . . 6-36
Viewing statistical evaluations . . . . . . . . 6-36
Changing the view (Spread – List) . . . . . 6-38
Viewing stored reading attachments. . . . 6-39
6.8 Documenting measurements. . . . . . . . 6-40
Data export . . . . . . . . . . . . . . . . . . . . . . . 6-40
Screen shots . . . . . . . . . . . . . . . . . . . . . . 6-41
7Special functions of the DMS Go+ TC
7.1 Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
7.2 Measurement mode Auto-V . . . . . . . . . . 7-6
Applications. . . . . . . . . . . . . . . . . . . . . . . . 7-6
Choosing the probe. . . . . . . . . . . . . . . . . . 7-6
Activating Auto-V. . . . . . . . . . . . . . . . . . . . 7-6
Zeroing for Auto-V. . . . . . . . . . . . . . . . . . . 7-7
Checking reference block data . . . . . . . . . 7-7
7.3 Measurement mode TopCOAT. . . . . . . . 7-9
Applications. . . . . . . . . . . . . . . . . . . . . . . . 7-9
Choosing the probe. . . . . . . . . . . . . . . . . . 7-9
Activating TopCOAT . . . . . . . . . . . . . . . . . 7-9
Zeroing for TopCOAT . . . . . . . . . . . . . . . 7-10
Checking reference block data . . . . . . . . 7-10
Sound velocity in the test object.. . . . . . . 7-11
Calibration to the sound velocity . . . . . . . 7-12
Sound velocity in the coating . . . . . . . . . 7-13
8Maintenance and care
8.1 Instrument care . . . . . . . . . . . . . . . . . . . . 8-2
8.2 Battery care . . . . . . . . . . . . . . . . . . . . . . . 8-2
Battery care. . . . . . . . . . . . . . . . . . . . . . . . 8-2
Charging the batteries. . . . . . . . . . . . . . . . 8-3
8.3 Maintenance . . . . . . . . . . . . . . . . . . . . . . 8-3

Contents
DMS Go+ Edition 4 (05/2014) 0-7
8.4 Software updates . . . . . . . . . . . . . . . . . . 8-4
Download of update files . . . . . . . . . . . . . 8-4
Installing an update. . . . . . . . . . . . . . . . . . 8-5
9Interfaces and Peripherals
9.1 Interfaces. . . . . . . . . . . . . . . . . . . . . . . . . 9-2
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
USB interface . . . . . . . . . . . . . . . . . . . . . . 9-3
Service interface (Mini RS232-C) . . . . . . . 9-3
9.2 Peripherals . . . . . . . . . . . . . . . . . . . . . . . 9-4
10 Appendix
10.1 Application notes . . . . . . . . . . . . . . . . . 10-2
General notes . . . . . . . . . . . . . . . . . . . . . 10-2
10.2 Sound velocities . . . . . . . . . . . . . . . . . . 10-4
10.3 Data Recorder file types. . . . . . . . . . . . 10-7
File type LINEAR . . . . . . . . . . . . . . . . . . 10-7
File type GRID . . . . . . . . . . . . . . . . . . . . 10-9
File type CUSTOM LINEAR . . . . . . . . . 10-11
File type CUSTOM GRID . . . . . . . . . . . 10-13
File type CUSTOM POINT . . . . . . . . . . 10-15
File type BOILER . . . . . . . . . . . . . . . . . 10-17
10.4 Flag symbols. . . . . . . . . . . . . . . . . . . . 10-19
10.5 Function directory . . . . . . . . . . . . . . . 10-20
10.6 EU Declaration of Conformity . . . . . . 10-25
10.7 Manufacturer/Service addresses. . . . 10-25
10.8 Environmental protection
regulations. . . . . . . . . . . . . . . . . . . . . . 10-27
WEEE directive (Waste Electrical
and Electronic Equipment) . . . . . . . . . . 10-27
Disposal of batteries . . . . . . . . . . . . . . . 10-28
10.9 Recycling directives . . . . . . . . . . . . . . 10-30
Overview . . . . . . . . . . . . . . . . . . . . . . . . 10-30
Materials to be disposed of separately . 10-33
Other materials and components . . . . . 10-36
Recycling data of the DMS Go+ . . . . . . 10-43

0-8 Edition 4 (05/2014) DMS Go+
11 Specifications
11.1 Specifications of the DMS Go+ . . . . . . 11-2
Display screen . . . . . . . . . . . . . . . . . . . . 11-2
Display . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3
Connectors . . . . . . . . . . . . . . . . . . . . . . . 11-4
Pulser . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-4
Receiver . . . . . . . . . . . . . . . . . . . . . . . . . 11-5
Memory . . . . . . . . . . . . . . . . . . . . . . . . . . 11-5
Environment . . . . . . . . . . . . . . . . . . . . . . 11-6
Protection . . . . . . . . . . . . . . . . . . . . . . . . 11-7
Options . . . . . . . . . . . . . . . . . . . . . . . . . . 11-8
11.2 Specifications according to
EN 12668 . . . . . . . . . . . . . . . . . . . . . . . . 11-9
12 Index

DMS Go+ Edition 4 (05/2014) 1-1
Introduction 1

1 Introduction Safety information
1-2 Edition 4 (05/2014) DMS Go+
1.1 Safety information
The DMS Go+ has been designed and tested according
to DIN EN 61010-1: 2011-07, Safety requirements for
electrical equipment for measurement, control and lab-
oratory use, and was technically in perfectly safe and
faultless condition when leaving the manufacturing
works.
In order to maintain this condition and to ensure a safe
operation, you should always read the following safety
information carefully before putting the instrument into
operation.
ATTENTION
The DMS Go+ is an instrument for materi-
als testing. Any use for medical or any
other applications is not permitted!
The instrument may only be used in industri-
al environments.
The DMS Go+ is waterproof according to IP67. It can be
operated either with the corresponding lithium-ion bat-
teries or with the charger/power adapter. The charger/
power adapter meets the requirements of electrical
safety class II.
Battery operation
For the battery operation of the DMS Go+, we recom-
mend the corresponding lithium-ion battery. You should
only use this battery for the battery operation.
You can charge the lithium-ion battery either within the
instrument itself or in an external charger. If a lithium-ion
battery is inserted, charging starts automatically as
soon as you connect the charger/power adapter to the
DMS Go+ and to the mains power supply.
For power supply, please also see Chapter 3.2 Power
supply, page 3-2. For the use of batteries, please also
see Chapter 8.2 Battery care, page 8-2.
Software
According to the current state of the art, software is nev-
er completely free from errors. Before using any soft-
ware-controlled test equipment, it is therefore neces-
sary to make sure that the required functions operate
perfectly in the intended combination.
If you have any questions about the use of your test
equipment, please contact your nearest representative
of GE.

Safety information 1 Introduction
DMS Go+ Edition 4 (05/2014) 1-3
Defects/errors and exceptional stresses
If you have reason to believe that a safe operation of
your DMS Go+ is no longer possible, you have to dis-
connect the instrument and secure it against uninten-
tional reconnection. Remove the lithium-ion battery.
A safe operation is no longer possible for example
●if the instrument shows visible damages,
●if the instrument no longer operates perfectly,
●after prolonged storage under adverse conditions
(e.g. exceptional temperatures or especially high air
humidity, or corrosive environmental conditions),
●after being subjected to heavy stresses during trans-
portation.

1 Introduction Important information on wall thickness measurement
1-4 Edition 4 (05/2014) DMS Go+
1.2 Important information on wall
thickness measurement
ATTENTION
Please read the following information before
using your thickness gauge. It is very import-
ant that you understand and observe this in-
formation to avoid any errors when using the
instrument that might lead to false measure-
ment results. Decisions made on the basis of
false measurement results may lead to prop-
erty damages and personal injuries.
Prerequisites for the use of ultrasonic
thickness gauges
This operating manual contains essential information on
how to operate your thickness gauge. In addition, there
are a number of factors that affect the measurement re-
sults. A description of all these factors would go beyond
the scope of an operating manual. Therefore, only the
most important prerequisites for a safe and reliable ul-
trasonic thickness measurement are mentioned here:
●Training of the instrument operator (operator)
●Knowledge of special technical measurement re-
quirements and limits
●Choice of the appropriate measuring device
The operation of an ultrasonic measuring device re-
quires proper training in ultrasonic thickness measure-
ment. Proper training comprises for example adequate
knowledge of the following:
●Theory of the propagation of sound waves in materi-
als
●Effects of the sound velocity of test material
●Behavior of sound waves at interfaces between dif-
ferent materials
●Propagation of the sound beam within the material
●Effect of the surface quality of test material.