DMTA-10055-01EN, Rev. A, February 2015
Chapter 11
258
11.5.2
Envelope Mode
The simplest method for inspection of crack depth is using API 5UE in Envelope
Mode. This method allows the operator to collect all pertinent data with the press of a
single key and size potential defects in the most efficient manner.
11.5.2.1
Envelope Mode Calibration
Calibrating for API 5UE inspection in Envelope mode requires the activation of the
Peak Memory function.
To calibrate in Envelope mode
1.
Press PEAK MEM to activate the Peak Memory function.
The letter
P
appears to the right of the live A-Scan display (see Figure 11-23 on
2.
Find the reflection from the calibration notch and press 2
ND
F, (AUTO XX%) to
bring this indication to 80 % FSH.
3.
Adjust gate 1 so that it surrounds the indication.
4.
Move the transducer forward and backward over the notch to draw a peak
envelope of the echo dynamics of the notch.
5.
Press
Collect
(P1 key) to collect the A
max
, T
1
, and T
2
data from the envelope (see
6.
Press P5 to move from calibration mode to Inspect mode.
Summary of Contents for EPOCH 650
Page 12: ...DMTA 10055 01EN Rev A February 2015 List of Abbreviations xii...
Page 30: ...DMTA 10055 01EN Rev A February 2015 Introduction 18...
Page 54: ...DMTA 10055 01EN Rev A February 2015 Chapter 1 42...
Page 84: ...DMTA 10055 01EN Rev A February 2015 Chapter 3 72...
Page 126: ...DMTA 10055 01EN Rev A February 2015 Chapter 5 114...
Page 148: ...DMTA 10055 01EN Rev A February 2015 Chapter 7 136...
Page 154: ...DMTA 10055 01EN Rev A February 2015 Chapter 8 142...
Page 236: ...DMTA 10055 01EN Rev A February 2015 Chapter 10 224...
Page 332: ...DMTA 10055 01EN Rev A February 2015 Appendix B 320...
Page 342: ...DMTA 10055 01EN Rev A February 2015 Appendix C 330...
Page 346: ...DMTA 10055 01EN Rev A February 2015 Appendix D 334...
Page 362: ...DMTA 10055 01EN Rev A February 2015 Index 350...
