Operating manual
EMA Thickness Gauge NOVOTEST UT-3K-EMA
RDC.ED.UT-3K-EMA.000 OM
Page 5
1 – probe; 2 – digital display; 3 – power button;
4 – calibration button; 5 – “Up” button; 6 – “Down” button; 7 – mini-USB connector.
Figure 1.1 – EMA Thickness Gauge NOVOTEST UT-3K-EMA
The device is equipped with a digital display to show the readings. The buttons located to the right
side of the display perform the following functions:
“OK” button – switching the device on and off, navigation through the menu;
“Calibration” button, entering the menu;
“Up” button – increasing the parameter value;
“Down” button – decreasing the parameter value.
The mini-USB socket is designed for connection of charger and connection of outer devices such
as an Android-based tablet or a smartphone.
1.5 Design and operating principle
The device operation is based on the measurement of the time of flight of the acoustic wave
through the tested material. The measured time is recalculated into the thickness value by the preset
ultrasound velocity value.
The acoustic wave is formed by electromagnetic acoustic transduction directly on the surface of
the test object and avoiding the contact media between probe and test object. Thanks to this, the wave
is not disrupted in this media. The testing gap can be 2-3 mm and might be in the form of air, liquid,
rust, paint, plastics, etc.
The special data processing algorithm allows correct measuring of the thickness of the test object
in the presence of interfering factors, such as metal anisotropy, the presence of several reflectors, and
the presence of external interference. The device allows eliminating the human factor completely and
making measurement fully automatic.
1.6 Means of measurement, device, and accessories
The device operability must be checked with the reference block included in the package.
In normal operating conditions, the indicated value of the device must correspond to the value of
the reference block. If the readings are wrong, the device must be calibrated according to the c. 2.3.