Development and manufacturing of non-
destructive testing units and system
Ultrasonic Flaw Detector NOVOTEST UD2301
5
probe
Automatic signaling of defects (AFS)
dual-gate
Setting range of AFS gates
from 0 to 2000
µs
Adjusting thresholds of AFS gates
from 0 to 100 %
высоты экрана
Detection of signals
positive half-wave, radio
mode
Dimensions (WxHxD)
80х162х38 mm;
Weight, not more
250 g (without batteries)
Mean time between failures
not less than - 3000
hours
Ultrasound probes used - ultrasonic piezoelectric transducers for
pulse flaw detectors.
The dimensions of the operating area of the screen is 48 x 74 mm.;
Electrical power is supplied from the following sources:
-
AC power from 100 to 250 V, a frequency of (50 ± 1) MHz;
- AA batteries 1,5 V (3 pcs.).
5 . Operating principle
Operating principle of flaw detector is based on the ultrasonic
contact NDT method, which uses the properties of ultrasonic
vibrations to reflect from the borders between materials with different
acoustic impedance. The ultrasonic transducer emits ultrasonic
impulse into the tested object. Reflected from the defects or the
product surface the echo signals are received by the ultrasonic
transducer. The resulting electrical signals are subject to
amplification, digitization, processing and output to the display.
Displays echoes received by the flaw detector is performing as
scanning of type A (A-scan) as well as images of cross sections of
tested objects in form of B-scan.
