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 ACS
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Low Frequency Flaw
Detector A1220 Monolith |
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| General Information |
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The А1220 is designed for
inspecting reinforced concrete (as well as rocks, plastics and similar
materials) for foreign inclusion, voids and cracks. The flaw detector
may be
used for thickness measurements and the investigations of internal
structures, estimation of thickness of asphalt coverings of roads, and physico-mechanical properties of composites and plastic. |
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Flaw detector A1220 consists of an
electronic unit with built-in LCD screen and soft keyboard, 24 (6 x 4)
elements antenna array (AA), additional ultrasonic probes of
longitudinal and shear waves. AA is used in the echo - method testing.
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Damped low-frequency ultrasonic probes with
dry point contact are located in a 6x4 matrix.
Each element has independent spring loading
Monitoring procedure without couplants due to design of the AA, and
product surfaces can have curvature radius from 150 mm and more, and
roughness up to 8 mm. Additional ultrasonic probes are used
for pulse echo testing, in a transducer similar to AA
elements do not require couplants. |
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Special Features |
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Range
ultrasound frequency operating 20 - 150 kHz; |
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Echo - pulse
and shadow methods testing with use of longitudinal, shear and surface waves; |
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Dry
acoustic contact to material surface; |
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1D and
2D presentation of echo - signals on the LCD screen; |
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Selections of weak signals on the background noise by
accumulation methods. |
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Automatic and manual operation modes for detection of
flaw coordinates or object' thickness; |
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Automatic and manual ultrasonic velocity measuring in
material; |
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Parameters adjustments with help of menu options, saving of
settings library; |
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Screen
illuminations, self contained power supply, automatic power
supply switch off; |
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Recording results in the device permanent memory and their
viewing on the screen with
measurements via the help of screen cursors; |
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Data
transferring on the infra red port to the external computer;
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3D presentation
of internal material structure on the screen
of external computer; · |
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Teamwork of the device with a computer in real time with the
expanded opportunities of the analysis of the form of
signals, measurements of their parameters and data
recording. |
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Technical Specifications |
| Depth limits for echo-method testing, mm |
75, 150, 375,
750, 1500 |
| and sweep
duration, mcs |
75, 150, 375,
750, 1500 |
| Min diameter
of detected defects in concrete * on depths up |
to 500 mm |
| - air cylinder
like |
12mm |
| - air sphere
like |
50 mm |
| Max measured
thickness of concrete object * |
700 mm |
| The accuracy
of defect location depth measurement * |
+- 10% |
| Power supply |
4 AA batteries |
| Time of
continuous work without battery replacement: |
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| with screen
illumination |
not less than
15 hours; |
| without
screen illumination |
not less than
50 hours |
| Operating
temperatures range |
from -20C to
+45C |
| Dimensions of
electronic unit |
235 x 98 x 33
mm |
| Weight of
electronic unit |
800 g |
| Weight of AA batteries |
760 g |
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