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10 Appendix
Application notes
10-2
Edition 4 (05/2014)
DMS Go+
10.1 Application notes
General notes
The DMS Go+ is easy to use and produces reliable and
reproducible measurement results if handled correctly
and in consideration of all the conditions which may af-
fect the accuracy of measurements. Some of the most
common influential factors are explained in this chapter.
External inclusions inside the material
If the DMS Go+ displays a value during a sequence of
measurements which is considerably smaller than the
one obtained from a measuring point lying in the close
vicinity, this may have been caused by a material defect
(for example external inclusion) reflecting the sound
pulses instead of the backwall. If this occurs, this area
should by checked by means of another suitable NDT
method in order to find out the cause for the conspicu-
ous reading.
Surface quality
Tool marks running parallel to the coupling face may
cause measurement errors in the case of a great peak-
to-valley height. If the acoustic separation layer of the
probe is set at right angles to the marks, this effect does
not occur.
Incorrect readings are obtained in some cases due to a
too rough test surface because of excessive couplant
accumulating between the probe and the test object sur-
face. Very rough surfaces can totally prevent the cou-
pling (no coupling signal). A surface treatment is re-
quired in such cases.
Curved surfaces
In measurements on convex surfaces, for example
tubes or cylindrical tanks, it is necessary to couple the
probe to the surface center for radial scanning. The
acoustic separation layer of the probe must be set at
right angles to the longitudinal axis of the test object
(please refer to figure on the next page). Probes with
small contact face diameters improve the coupling on
convex surfaces.
Summary of Contents for DMS Go+
Page 1: ...DMS Go Technical Reference and Operating Manual ...
Page 3: ...DMS Go Edition 4 05 2014 0 3 Function groups and functions ...
Page 4: ...0 4 Edition 4 05 2014 DMS Go Function groups and functions cont d ...
Page 8: ...0 8 Edition 4 05 2014 DMS Go ...
Page 17: ...DMS Go Edition 4 05 2014 1 1 Introduction 1 ...
Page 41: ...DMS Go Edition 4 05 2014 2 1 Standard package and accessories 2 ...
Page 54: ...2 Standard package and accessories Recommended accessories 2 14 Edition 4 05 2014 DMS Go ...
Page 55: ...DMS Go Edition 4 05 2014 3 1 Initial start up 3 ...
Page 67: ...DMS Go Edition 4 05 2014 4 1 Principles of operation 4 ...
Page 78: ...4 12 Edition 4 05 2014 DMS Go ...
Page 79: ...DMS Go Edition 4 05 2014 5 1 Operation 5 ...
Page 133: ...DMS Go Edition 4 05 2014 6 1 Data Recorder 6 ...
Page 174: ...6 Data Recorder Documenting measurements 6 42 Edition 4 05 2014 DMS Go ...
Page 175: ...DMS Go Edition 4 05 2014 7 1 Special functions of the DMS Go TC 7 ...
Page 189: ...DMS Go Edition 4 05 2014 8 1 Maintenance and care 8 ...
Page 195: ...DMS Go Edition 4 05 2014 9 1 Interfaces and Peripherals 9 ...
Page 199: ...DMS Go Edition 4 05 2014 10 1 Appendix 10 ...
Page 228: ...10 Appendix Recycling directives 10 30 Edition 4 05 2014 DMS Go 4 5 1 4 ...
Page 231: ...Recycling directives 10 Appendix DMS Go Edition 4 05 2014 10 33 2 ...
Page 234: ...10 Appendix Recycling directives 10 36 Edition 4 05 2014 DMS Go 1 3 ...
Page 235: ...Recycling directives 10 Appendix DMS Go Edition 4 05 2014 10 37 1 1 ...
Page 236: ...10 Appendix Recycling directives 10 38 Edition 4 05 2014 DMS Go 5 ...
Page 237: ...Recycling directives 10 Appendix DMS Go Edition 4 05 2014 10 39 4 7 ...
Page 238: ...10 Appendix Recycling directives 10 40 Edition 4 05 2014 DMS Go 3 6 6 6 7 ...
Page 242: ...10 Appendix Recycling directives 10 44 Edition 4 05 2014 DMS Go ...
Page 243: ...DMS Go Edition 4 05 2014 11 1 Specifications 11 ...
Page 252: ...11 10 Edition 4 05 2014 DMS Go ...