Materials Testing
    Search for plastic and metal pipes with tomograph Search for voids and cavities back of liner plates of underground and railway tunnels

Ultrasonic low-frequency tomograph

  • ACS - A1040 MIRA

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A portable handheld ultrasonic tomograph is designed for imaging the internal structure of concrete at one-sided access

The tomograph represents a fully-autonomous measurement unit for the collection and tomographic processing of the data obtained. The measurement unit contains a matrix antenna array from 48 (12 blocks, each containing 4 elements) law-frequency broad banded transducers of shear waves with dry-point contact and ceramic wear-resistant tips. Hence they can work with rough surfaces for a long time. Each transducer is equipped with an independent spring suspension, thus allowing inspection on uneven surfaces. The nominal frequency of the array is 50 kHz.

The instrument’s interface allows working with laser beams that are projected on a surface of the testing object. Hence the operator can correctly maintain a shift step of the antenna array during a complete technical diagnostics of the testing object.

A handheld light-weight body and a repositionable handle provide convenient working with the instrument on the horizontal, vertical, and roof surfaces. A reference scale on the lower part of the instrument’s body is designed for convenient localization of the defects relative to the antenna device.


  • Inspection of concrete constructions up to 2500 mm thickness for the purpose of evaluating of the consistency of the construction.
  • Inspection of reinforced concrete constructions up to 800 mm thickness for the purpose of evaluating of consistency of the construction.
  • Search for foreign inclusions, cavities, voids, delaminations, leaks of filling and cracks in the concrete objects, reinforced concrete objects, and natural stone.
  • Inspection of constructions made of marble and granite up to 2 000 mm thickness.
  • Search for plastic and metal pipes of a diameter more than 10 mm in reinforced concrete.
  • Inspection of the internal structure of carbon rods of a diameter of more than 900 mm.
  • Evaluation of the condition of the channels with stressed reinforcement in reinforced concrete bridges.
  • Inspection of understructures, columns, and overhead covers in cast-in-place constructions to detect voids and leaks of filling.
  • Search for voids and cavities back of liner plates of underground and railway tunnels.
  • Inspection of refractory blocks of the glass blowing furnace.
  • Estimation of the thickness of the concrete cover and depth of coverage reinforcement.
  • Thickness measurement of the testing object at one-sided access.
  • Detailed registration of the results obtained.
Scanning device

built-in matrix antenna array

Operating frequency

25 – 85 kHz

Number of transducers in the antenna array


Type of transducers used in the antenna array

low-frequency broadband
transversal with dry point contact
and ceramic wear-proof tips

Velocity range

from 1 000 to 4 000 m/s

Maximum view depth in concrete

2500 mm

Thickness measuring range

50 – 600 mm

Maximum error (X – thickness)

±(0,05∙Х+10) mm

Minimal size of a located reflector

a sphere 20 mm in diameter
at least 200 long
at the depth from 50 to 400 mm

Display type

5,7'' TFT, colour

Embedded memory

flash 7Gb


built-in quick-detachable battery


11,2 V

Operating time (battery)

5 h

PC connection


Operation temperature range

from -10 to +50C


4,5 kg

Size, not more than without handles

370 х 150 х 145 mm

with handles positioned horizontally

470 х 150 х 170 mm

with handles positioned vertically

370 х 210 х 170 mm