Zvuk Co.

Developing of means and tehniques of nondestructive test

devices NDT
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Principle of action
Application of equipment


Method of natural oscillation
Test of abrasive materials


Control device for nondestructive acoustic quality testing materials and articles of different sizes

RU.C.33.022.A 7044/1


 Zvuk-203M is a portable panel. Devices operation is based on method of free oscillations. To carry out the measurement it is necessary to strike an article a special way. On liquid crystal display of the device results are shown as the meaning of natural oscillation frequency (Hz), sound velocity, E-Modulus and Sound Index or hardness.


  • Abrasive products, ceramics, hard alloys and etc.
  • Vitrified, rubber and resin bonded materials.
  • Articles manufactured by method of powder metallurgy.
  • Vitrified bonded grinding wheels diameter from 3 to 250 mm, grinding stones, cutting inserts of various shapes and sizes etc.

PC compatibility:

Received results can be passed to computer by using standard interface RS232. All Results you can save in PC in Excel or special program.

Device is delivered as a set, consists of following items:

  • portable panel
  • computer programs for calculation and analysis of NOF spectrum on CD in English
  • operating instructions
Technical description:

Range of measurement:

22-17000 kHz


110x211x46 mm.


0,5 kg

Running time without a boost charge

8 H

  © Zvuk Co. 2003-2007 .