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James Instruments VuCon Corrosion & Thickness Meter

The VuCon Impact Echo System is for measuring the thickness and quality of concrete.

The Vu-Con System uses the impact-echo method to evaluate concrete and masonry structures.

The impact-echo method is based on the use of impact generated stress waves that propagate through the material and are reflected by both the materials external surfaces and internal flaws. This method can be used to make accurate non-destructive measurements of thickness in concrete slabs and plates, and to locate internal flaws such as honey-combing, debonding and delaminations.

It can measure thickness, locate cracks, voids and other defects in masonry structures where mortar bonds the masonry together. The impact-echo method is not affected by the presence of steel reinforcing bars. The built-in menu system has provisions for determining all the parameters for the material under test. The thickness menu allows rapid display of the frequency spectra of an impact. Peaks are automatically found and highlighted for a given test. The velocity menu, for use with the dual transducer set, facilitates determination of the stress wave speed in a given material. This allows the operator to gather and analyze data quickly and easily in the field.

Finally, the user can select from multiple gain settings for various material dimensions. There is also a selection of multiple data sampling rates and an adjustment for different trigger levels which help the user produce accurate and reliable results.

The Vu-Con provides the consultant or engineer with the sturdiest, most reliable system for impact echo analysis. No moving parts and implementation of the latest microcomputer technology has created a system that is both sophisticated and reliable. The unit comes with a 90 mm (3.5) by 115 mm (4.5) graphic display screen that is easily viewed in daylight. This allows rapid analysis of results in situ. It may store more than 200 individual tests with time and date indication.

The data is easily uploaded to a PC for inclusion in reports and data analysis. Data communication takes place via the RS-232 port and Windows compatible PC software. The unit allows the user to select sensitivity levels to adapt to varying conditions in the field.

More detailed information is available on exactly how the Vu Con works, the measuring theory and NDT sensors.

Key Features

  • Accurately determines concrete thickness without drilling cores or using similar destructive techniques
  • Quickly locates delaminations and voids in concrete slabs & structures where access is limited to a single side
  • Rugged design for field use
  • Rapid results within seconds at the job site
  • Large easy to view display for data analysis on site and in daylight
  • Data can be stored and uploaded to a PC for later analysis and inclusion in reports
  • Conforms to ASTM C-1383


James Instruments Inc. is a leading manufacturer of non-destructive test equipment for construction materials. Specifically, we design, manufacture and sell the most advanced equipment to test concrete, ceramic, wood, and other coarse grained materials. James Instruments supply the instruments that: measure strength, both compressive and tensile, locate rebar and other objects in concrete and masonry, determine density and analyse materials ultrasonically, analyse corrosion and, finally, determine moisture in concrete and other construction materials.