DMTA-10004-01EN, Rev. D, November 2016
Software Options
93
6. Restart the instrument to complete the activation.
7.2 High Resolution Software Option
The 38DL PLUS has the ability to display thickness values with its standard
resolution of 0.01 mm (0.001 in.) and low resolution of 0.1 mm (0.01 in.). These
resolutions are adequate for most ultrasonic thickness measurement applications.
For single element transducers, the high resolution software option adds the ability to
display thickness readings with a high resolution of 0.001 mm (0.0001 in.). High
resolution is not available for all transducers or measurement screens and is also
limited by maximum thickness. Even though the 38DL PLUS has the ability to display
thickness readings in high resolution, the measurement accuracy is highly dependent
on material, geometry, surface condition, temperature, and needs to be determined on
a case-by-case sample evaluation.
High resolution is available for the following transducers and measurement
conditions:
• Single element transducer in the frequency range of 2.25 MHz to 30.0 MHz
• Thickness measurement below 100 mm (4.00 in.)
High resolution is not available for the following transducer or measurement
conditions:
• Dual element transducers
• Low-frequency transducers with frequency below 2.25 MHz
• Thickness ranges over 100 mm (4.00 in.)
Once activated the high resolution selection appears in the resolution selection list
(see “Changing the Thickness Resolution” on page 61).
7.3 Oxide Layer Software Option
The oxide layer software option allows the 38DL PLUS to measure the thickness of
both the boiler tube and its internal oxide at the same time. When the oxide layer
option is activated, the OXIDE item appears in the menu when you press [SETUP
MENU]. Table 5 on page 94 indicates the transducer to use when using the oxide layer
software option.
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