RDC.ED.UT-3M-EMA.000 OM
Operating manual
EMA Thickness Gauge NOVOTEST UT-3M-EMA
Page. 12
In the “AUTO” mode (fig. 2.6), the speed of ultrasound velocity in the test object must be set (the
measurement of the velocity). The ultrasound velocity should be set through the calibration, or
manually in the “SPEED” parameter (from 1000 to 9999 m/s).
Caution!
The device employs a transversal wave. The speed of propagation of transversal waves in steel is 3250
m/
d
.
Figure 2.6 –“AUTO” mode
When testing materials with high attenuation, big objects, and using a big sounding range, the
noise amplitude can be compared to the amplitude of the valid signal and the valid signal can be
difficult to see with strong noise. For these cases, the device implements averaging that can be done by
2, 4, 8, 16, 32, 64 and 128 signals.
2.3.2.2 “MANUAL” mode
In the “MANUAL” mode, the measurement and testing are performed, and also setting of the
device according to a specific task (fig. 2.7). All parameters for the settings of measurement are
divided into categories (tab. 2.1) and depending on the selected category, operator can set different
parameters.
Figure 2.7 – “MANUAL” mode
