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
1 Introduction
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
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