Acoustic Concrete Tester (ACT)

The Acoustic Concrete Tester (ACT) is a concrete thickness gauge that measures the concrete thickness of pavements, slabs, retaining walls, foundation footings and tunnel linings. This nondestructive testing instrument also identifies flaws such as delaminations, voids, and spalls.

request a quote
Have a technical question?
Ask our team of engineers.

The Acoustic Concrete Tester (ACT) is a concrete thickness gauge that measures the concrete thickness of pavements, slabs, retaining walls, foundation footings and tunnel linings. This nondestructive testing instrument also identifies flaws such as delaminations, voids, and spalls.

The ACT is precise, light, battery operated and rugged for field use in all weather conditions. It works for concrete structures from 75 to 900 mm (3 to 35 inches) thick.

The ACT uses Ultrasonic Echo Technology. It electronically generates a broadband pulse that includes all frequencies required to accurately determine the thickness of the structure.

The ACT eliminates coring or excavation, and easily self calibrates the concrete wave speed prior to the test. It only takes seconds to measure the thickness of the concrete

Measuring thickness with the ACT consists of placing two small probes on the structure to be tested and touching the ACT screen. A telescoping pole helps test hard to reach structures. As the structure responds to its natural frequency, its thickness is displayed on the high visibility ACT screen. The ACT also calculates the wave speed of structures of unknown thickness.

Acoustic Concrete Tester (ACT) Specifications

November 2008
PDF Format

Physical

  • Size (H x L x W): 75 x 175 x 235 mm
  • Weight: 2.2 kg
  • Display: Large backlit transflective VGA touch screen for any lighting conditions
  • Operating Temperature: 0˚ to 50˚ C Storage Temperature: -20˚ to 65˚ C
  • Battery: internal, 8 hours duration, rechargeable with fast charger (3 hours)

Electronic

  • Microprocessor PXA 255 XSCALE up to 400 MHz
  • Data storage on Flash card up to 128 MB Sampling digitizing frequency greater than 1 MHz
    (net frequency after DSP 192 KHz) Sampling frequency accuracy within 0.01%

Functional

  • Material resonant frequency from real time FFT. Generates output graphs to illustrate reports. Screen
    may be personalized with company logo.
  • Probes attach to ACT Telescoping Pole for convenient testing.

Probes

  • Matched, interchangeable transceivers
  • Materials: Brass
  • Dimensions: 60 mm diameter, 45 mm length
  • Weight: 0.5kg
  • Cable Length: 2.4 m
  • Wide Band Transmission
  • Receiving Frequencies from 2 to 30 KHz
  • Resonant Frequency: > 36 KHz
  • Optional Underwater probe available

One year warranty