DMTA-10009-01EN [U8778346], Rev. D, November 2016
Basic Operation
79
5.5.2
Performing a THRU-COAT Calibration
The calibration procedure for a THRU-COAT probe is similar to the procedure for
other probes. As for a normal calibration, you need two uncoated samples with
accurately known thin and thick thicknesses to perform the following calibration
procedure. The difference is that towards the end of the procedure, you can press
[CAL VEL]
a second time to calibrate the coating thickness measurement on a sample
with an accurately known coating thickness.
To perform a THRU-COAT calibration
1.
Ensure that the THRU-COAT function is enabled (see “Enabling the THRU-
COAT Function” on page 78).
2.
Couple the transducer to the thick sample.
3.
Press
[CAL VEL]
.
4.
When the reading is stable, press
[ENTER]
.
5.
Using the arrow keys, edit the thickness value to match the known thickness of
the sample.
6.
Couple the transducer to the thin sample.
7.
Press
[CAL ZERO]
.
8.
When the reading is stable, press
[ENTER]
.
9.
Using the arrow keys, edit the thickness value to match the known thickness of
the sample.
10. If the coating thickness measurement accuracy is important for your application,
perform the following actions (omitting this step does not affect the accuracy of
the metal thickness measurement):
a)
Press
[CAL VEL]
again.
b)
Couple the transducer to the coated sample.
c)
When the reading is stable, press
[ENTER]
.
d)
Using the arrow keys, edit the thickness value to match the known coating
thickness of the coated sample.
11. Press
[MEAS]
to complete the calibration.
Summary of Contents for 38DL PLUS
Page 6: ...DMTA 10009 01EN U8778346 Rev D November 2016 Table of Contents vi...
Page 8: ...DMTA 10009 01EN U8778346 Rev D November 2016 List of Abbreviations viii...
Page 24: ...DMTA 10009 01EN U8778346 Rev D November 2016 Important Information Please Read Before Use 16...
Page 26: ...DMTA 10009 01EN U8778346 Rev D November 2016 Introduction 18...
Page 46: ...DMTA 10009 01EN U8778346 Rev D November 2016 Chapter 2 38...
Page 56: ...DMTA 10009 01EN U8778346 Rev D November 2016 Chapter 3 48...
Page 102: ...DMTA 10009 01EN U8778346 Rev D November 2016 Appendix 94...
Page 106: ...DMTA 10009 01EN U8778346 Rev D November 2016 List of Tables 98...
