Ultrasonic pulse Velocity (UPV)
We stock the Pundit Lab + and Pundit PL200 ultrasonic pulse velocity testers.
Ultrasonic pulse velocity testing is used to assess the variations in the apparent strength of concrete. It can also be used to detect the presence of voids, honeycombing or other defects.
The pundit consists of the the control unit and two transducers. One of the transducers is used to send an ultrasonic pulse and the other is to receive. They are in contact with the concrete surface and coupled using a gel. They are connected to the control unit via cables.
The control unit displays the transit time of the ultrasonic pulse between the two transducers.
It is possible to develop a relationship between this transit time and the strength of concrete, however results can be heavily affected by factors such as reinforcing bars, type of cement and size and type of aggregates.
Our ultrasonic pulse velocity units
The pundit Lab + is the preceding model to the PL200 but is capable of all of the same tests. The PL200 benefits from a larger touchscreen digital display and ours supports the PE (Pulse echo head).
The larger display benefits the user by visualising the test, more information is available than just the signal transit time making the unit more user friendly. Crack depth measurement is possible with either pundit device. (Both are supplied with the 54 kHz transducers).
The Pulse Echo transducer attachment for the Pundit PL200 enables the user to complete concrete thickness measurements and detect the presence of voids, honey combing and delamination from a single side. This is possible up to a maximum depth of 1 metre depending on concrete quality. This attachment is only available with the PL200 version due to the need for visual confirmation of the tests.