© 2015 Proceq SA
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8
Start/Snapshot (Left Button on Transducer):
Begin the measurement.
Save the current measurement as displayed on the
screen and continue measuring.
L
R
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Cursor Selection
Automatic triggering.
Manual triggering. Set the cursor position manually, by
dragging it to the left or right. The trigger position may
also be adjusted later on the saved waveform in the
Explorer or in PL-Link.
Available in transmission time mode only. Allows a
marker to be set on a second echo and the difference
between thet two echos is displayed.
Manually adjust the colour intensity.
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Automatic Estimation of Pulse Velocity
This setting is available in the Distance and B-Scan
modes. The pulse velocity may be entered manu-
ally after having made a control measurement on an
object of known thickness. Alternatively, it is possible
to estimate the pulse velocity directly on surface of the
test object. Tap on this button and press the transducer
against the surface to make a measurement. A number
of measurements can be made and an average value
is calculated. Tap
to apply the pulse velocity set-
ting. Pulse velocity may be subsequently adjusted on
saved files in the Explorer or in PL-Link.
NOTE! Typical shear wave pulse velocities for concrete are in
the region 2000 - 2500 m/s
3.5 Measurement Modes
Transmission time
The measured transmission time between the transmitter and receiver.
Distance
Enter the pulse velocity of the material under test or perform an “Auto-
matic Estimation of Pulse Velocity” as described in the previous chapter.
The result is the thickness of the slab or distance to the internal object
(e. g. void, delamination) that is the source of the echo.
Pulse Velocity
Enter the thickness of the object under test.
The result is the transmission time and pulse velocity of the material un-
der test.
