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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