Used for measuring the velocity of ultrasonic pulses through a concrete section providing information's on cracks, voids, strength, and giving quick estimates of dynamic modulus of elasticity on site or in the laboratory. The pulse velocity can be combined with the rebound hammer value for the strength evaluation of concrete. It can also be used for estimating times for formwork striking. The unit includes an excel spreadsheet for the acquisition of the waveform on the PC for further elaborations.

Main Applications:

Concrete Strength Evaluation combining the Rebound number and the UPV transit time. It is possible to use our digital test hammer to obtain the average value of rebound number. This value can be insert in the dedicated menu of UPV tester combining a typical surface measurement with the deeper UPV transit time in order to obtain a more reliable and extended information.

Standard UPV measurement with incorporated oscilloscope. Also suitable for determining the Dynamic Modulus of Elasticity. The meter features a very accurate measurement of the transit time.

Frequency Spectrum Analysis by FFT Method (Fast Fourier Transform-Algorytm). For determining the natural frequency of the ultrasonic pulse transmitted through the material. This determination is suitable for the examination of the pulse path and gives indications about possible cavities, delamination, multi-layer elements or other similar dis homogeneities.

Measurement of the Attenuation of the Transmitted Energy. Very often the transit time only is not enough to identify dis homogeneities and little damages as for example microcracking of concrete which are, on the contrary, well located with this technique by properly processing the acquired waveforms.

Main Features:

Digital scope, 2 MHz sampling rate, 12 bit resolution

Transit time up to 16 ms with 0.1 µs resolution

Slot for memory card to save data (2 GB=30000 tests)

7 selectable pre-amplifier gains (impulse amplitude)

Transmitter pulse 2500 V

6” Multifunctional touch screen display

Signal processing by FFT method (Fast Fourier Transform)

Advanced picking algorithm providing the real arriving time of the pulse

Assessment of concrete strength with combined method Ultrasonic velocity/Rebound index.