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5.6 Two-point calibration
This procedure assumes that the user has two known material thickness points of the
test material and that these are representative for the measuring range.
1. On the {Test Set} → {2- Point Cal} submenu, press
point calibration. Then the menu is left to enter the instrument screen. "DPC"
appears on the display.
2.
Press the key to start calibration. The sequence ''NO1'' appears, indicating
the first measurement point.
3. Coupling agent is applied to the material sample.
4. The US measuring probe is placed on it (on the first or second calibration point)
and the correct position of the measuring probe on the material sample is
checked. The display should now show a measured value and the coupling
symbol should appear.
5. As soon as a stable measured value is reached, the measuring probe is lifted
off. If the reading differs from the reading when the probe was still coupled, step
4 must be repeated.
6. The material thickness measurement is changed
buttons until the material thickness of the material sample is found.
7. Press the key
calibration point can be measured.
8. Steps 3 to 7 are repeated. The display jumps back to ''DPC".
9. Now the device is ready to take measurements in its measuring range.
5.7 The Scan Mode
While the instrument excels in single point measurements, it is sometimes desirable to
examine a larger area to look for the thinnest point. This unit has a scan mode that
allows you to do just that. In normal operation, four measurements are taken per
second, which is very appropriate for single measurements. In scan mode this is ten
measurements per second and the readings are shown on the display. While the
measuring probe is in contact with the material to be measured, the device
automatically displays the measured value. The measuring probe can be moved over
the surface, because short interruptions of the signal are ignored. In case of
interruptions lasting longer than two seconds, the last measured value found is
displayed. If the measuring probe is lifted, the last measured value found is also
displayed.
In {Test Set} → {Work Mode} Menu,
measurement mode and scan mode.
5.8 Set limit value
This allows the user to set an audible and visible parameter during the measurement.
If a measurement exceeds the limit set by the user, a beep is sounded. This improves
the speed and effectiveness of the measurements, as there is no need to constantly
look at the display.
The following describes how to make this option:
TU_US-BA-e-2020
to confirm. The display jumps to ''NO2" and the second
press the key to switch between single point
the key to enable two-
up and down with the /
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