The ОКО-22М-UT ultrasonic flaw detector is a standalone electronic unit. It is intended for application in high-performance automated multi-channel NDT Systems, transportable systems (mechanized NDT systems) or for manual testing.
Application of the ОKО-22М-UT ultrasonic flaw detector
It is available in several flaw detector models that differ in the number of channels and in the volume of built-in functions for result processing.
As the flaw detector is designed in a form of a standalone device with the connection to the PC via the Ethernet port, several UT channels can be connected to the PC via the Switch unit. This enables creating UT multi-channel testing systems.
Technical capabilities of the flaw detector allow using it both in online and offline testing systems of stationary type.
APPLICATION OF ULTRASONIC TESTING TECHNIQUE IN VARIOUS INDUSTRIES:
|
Production sector, test object |
Regulatory Documentation |
Required number of channels |
Operating frequency, MHz |
Testing techniques |
|
Metallurgy, testing the flat rolled steel |
EN10160, ASTM 578/A578M-96, A435A, ISO 12094 |
60-100 |
2-5 |
Immersion or contact |
|
Metallurgy, testing the rolled round steel bars |
EN 10308, EN 10228-3, ASTM E – 2375, MS-STD – 2154 |
3-20 |
2-10 |
Immersion or contact, testing velocity is up to 2 m/s |
|
Engineering, testing the pipe welded joints |
API 5L, API5 CT, EN 10246-17 |
12 |
2-5 |
Immersion or contact, velocity is up to 2 m/s |
|
Engineering, testing the pipe body, thickness gauging |
API 5L, API5CT, EN 10246, ASTM E1816-96 |
56 |
2-5 |
Immersion or contact, velocity is up to 1 m/s. Resonance-frequency technique for measuring the pipe |
Figure 1 – UT channel "ОКО-22М"
Figure 2 - Structural scheme for connecting the UT channels
|
Parameter |
Value |
|
PULSER |
|
|
Pulse mode |
Spike pulser, Square-Wave pulser |
|
Pulse Voltage (SQ mode) |
120-300 V in steps 10 V with tolerance 10% |
|
Pulse falling/rising time |
5 ns |
|
Pulse Width (SQ mode) |
20 – 500 ns in steps 10 ns with tolerance 10% |
|
PRF (SQ mode) |
15 – 2000 Hz in steps 5 Hz, 3 automatic modes: Auto Low, Auto Med, Auto High, Manual |
|
Pulse Voltage (spike mode) |
Low (100 V), High (400 V) |
|
Pulse energy (spike mode) |
Low (30 ns), High (100 ns) |
|
PRF (spike mode) |
15 – 8000 Hz in steps 5 Hz, 3 automatic adjustment modes: Auto Low, Auto Med, Auto High, Manual |
|
Damping |
50, 62, 150, 400 |
|
RECEIVER |
|
|
Gain |
0 to 110 dB adjustable in steps of 0.2, 0.5, 1, 2 dB |
|
Receiver input impedance |
400Ω±5% |
|
Receiver bandwidth |
0.2-27 MHz (- 3 dB) |
|
Digital filter setting |
Eight digital filter sets standard (0.2-10 MHz; 2.0-21.5 MHz; 8.0-26.5 MHz; 0.5-4 MHz; |
|
Rectification |
Fullwave, positive halfwave, negative halfwave, RF |
|
Amplitude measurement |
0-110% |
|
Reject |
0-80% FSH |
|
Units |
Millimeters, inch or microseconds |
|
Range |
1 to 6000 mm |
|
Velocity range |
1000 to 10000 m/s in steps of 1, 10, 100, 1000 m/s |
|
Thickness measurements range |
0.6 to 6000 mm |
|
Probe angle |
00 to 900 in steps 0.10, 1.00, 100 |
|
DIGITAL SPECIFICATION |
|
|
ADC |
10 – bits with the sampling rate 100 MHz |
|
A-Scan buffer |
8 KB |
|
GATE |
|
|
Measurements gates |
|
|
Start Gate |
Variable over entire range |
|
Width Gate |
Variable over entire range |
|
Gate height |
Variable from 2 to 100% FSH |
|
MEASUREMENT SPECIFICATION |
|
|
Result display |
A-scan, B-scan, C-scan, D-scan, TOFD scan |
|
DAC/TCG |
|
|
DGS |
|
|
CONNECTORS |
|
|
Probe connector |
2 BNC or 2 Lemo 1S |
|
USB port |
USB-2.0 |
|
Ethernet |
+ |
|
Alarm output |
+ |
|
Encoder |
1 Lemo (with the option of two encoders operation) |
