Probes; Probe Types - NOVOTEST UD3701 Operation Manual

Operation manual
Ultrasonic Flaw Detector NOVOTEST UD3701

1.5 Probes

Flaw detector is designed to operate with the contact, single and dual element UT probes.
The device uses a generator of bipolar sounding pulses with controlled duration, which provides
operating with most probes on the market: with integrated terminating inductance and without it.
Depending on the type of probe it is used two types of cables and, correspondingly, two ways to
connect the probe:
- Ultrasonic single element transducers (type S) are connected via single cable LEMO-LEMO to
the left LEMO port;
- Dual element transducers (type D) are connected via double cable 2LEMO-2LEMO. Right port
is used to connect the input piezoelectric element (receiver), left - output piezoelectric element
(transmitter).

1.5.1 Probe types

P111 – Straight beam single element probe
Probes are used in flaw detection and thickness gauging for material testing by dilatational waves.
In practice, these probes are applied for ultrasonic testing of sheets, plates, forgings, castings and
determination of local thinning-out in product walls. Probes are used for evaluation of volume and flat
defects – cavities, hairlines, delamination, etc.
Figure 1.3 – Appearance of the straight beam single element probe
P112 – Straight beam dual element probe
Probes are mostly used for determination of residual wall thickness and low depth defects.
Thickness of tested objects usually is in the range 1-30 mm.
Figure 1.4 – Appearance of the straight beam dual element probe
P121– Angle beam single element probe
Probes are widely used for NDT of weld joints, sheets, plates, stampings, forgings and other
objects. Probes allow to evaluate cracks, volume defects such as: nonmetallic impurities, cavities,
welding gaps, shrink holes, etc. As general, characteristics of vertical orientated defects are found by
this kind of probe.
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