Development and manufacturing of non-
destructive testing units and system
Ultrasonic Flaw Detector NOVOTEST UD2301
3
selection of transducers, an assessment of the known conditions of
control in such materials, the selection of the minimum size of the
reflector for this type of product, reject level and so on.
2.3. Velocity of ultrasonic vibrations
Accuracy of measurement of thickness and position of defects
depends on the correct setting of the ultrasonic velocity in the
material. Velocity of ultrasound is dependent on the physical
characteristics of the material and its temperature.
3. Operating Conditions
The device is designed to operate in the following environmental
conditions:
- The temperature from -15 to +
50 °C;
- Relative humidity to 95% at a maximum temperature of +
35 °C.
The location of the flaw detector must be protected from direct
exposure to dust, moisture and corrosive environments. The field
strength of radio noise at the location of the flaw detector should not
exceed the value of the infringing operation, i.e. creator of the flaw
detector at the amplifier input voltage greater than half the maximum
sensitivity. At high field strength of radio interference must be taken
measures to shielding placements of flaw detector from the external
electromagnetic field.
Operating position of the flaw detector may be any convenient for
the user. To avoid moisture condensation inside the flaw detector
when moving it from a cold to a warm place, it is necessary to
sustain flaw detector for at least 4 hours before turning on in the
premises.
