DMTA-10004-01EN, Rev. D, November 2016
Chapter 13
228
measuring the length of bolts or the thickness of gel coat over fiberglass (see
Figure 13-6 on page 228). In these cases, to help stabilize the echo detection and
thickness measurements, select the first peak algorithm to detect the first of several
peaks of similar amplitudes (see step 5.
in “Creating a Custom Setup for a Single
Element Transducer” on page 221).
Figure 13
‑
6 Detection of the first or the second negative peak
13.5 Pulser Power
You can set the excitation pulse (main bang) voltage to one of the following values:
60 V, 110 V, 150 V, and 200 V.
Higher voltages may provide greater penetration at the expense of a lower near-
surface resolution, especially in mode 1. Inversely, lower voltages may provide better
near-surface resolution at the expense of a lower penetration.
For most applications, the 110 V value provides the best signal-to-noise ratio for
returning echoes. The pulser power indicates the voltage used to excite the transducer
and therefore, affects the size of the initial pulse (see Figure 13-7 on page 229) and the
amount of energy going into the material.
Summary of Contents for 38DL PLUS
Page 9: ...DMTA 10004 01EN Rev D November 2016 Table of Contents ix Index 297 ...
Page 10: ...DMTA 10004 01EN Rev D November 2016 Table of Contents x ...
Page 28: ...DMTA 10004 01EN Rev D November 2016 Important Information Please Read Before Use 16 ...
Page 30: ...DMTA 10004 01EN Rev D November 2016 Introduction 18 ...
Page 50: ...DMTA 10004 01EN Rev D November 2016 Chapter 2 38 ...
Page 60: ...DMTA 10004 01EN Rev D November 2016 Chapter 3 48 ...
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Page 300: ...DMTA 10004 01EN Rev D November 2016 Appendix C 288 ...
Page 306: ...DMTA 10004 01EN Rev D November 2016 List of Figures 294 ...
