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.
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 wall thickness – from 0.2 to 5.0 mm. |
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; 5-15 MHz; 5-15 MHz; DC-10 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) |
Designed by Minima Studio
