Low strain integrity testing by pulse echo or transient response methods.
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The Pile Integrity Tester (PIT) gives peace of mind that a pile or shaft is free of major cracks and voids, prior to construction of the superstructure. It may be used on most concrete or wood foundations. The PIT may also be used to test piles integral in the structure, such as those supporting existing bridges or towers, and may assess their length.
The PIT performs wave equation-based non-destructive foundation investigations known as Low Strain Impact Integrity Tests or Low Strain Dynamic Tests. These test may be performed by the Pulse (or Sonic) Echo or Transient Response Methods. With the PIT, any form of the test is performed fast, potentially making it possible to test every pile on a job site.
The PIT test consists of attaching one or two accelerometers to the foundation and using a hand-held hammer to impact it. The PIT collects the acceleration data and displays curves that reveal any significant changes in cross section that may exist along the shaft. The PIT-W software post-processes the data and generates reports, while the PIT-S software simulates a PIT test and performs simplified signal matching to assess the shape of the foundation.
The Pile Integrity Tester is available in several configurations to match the needs of each user. Find out which model is right for you here.
PIT-QV and PIT-QFV have a large screen and read data from traditional (cabled) accelerometers and/or instrumented hammers.
All models of the Pile Integrity Tester are battery powered, operated through a high visibility touch screen, and include a Fast Fourier Transform (FFT) feature and a license of PIT-W Standard Software. All comply with ASTM D5882 and many other codes and specifications.
Size: 272 X 212 X 60 mm (10.7 x 8.3 x 2.4 in)
Weight: 2.04 Kg (4.5 lbs)
Sunlight readable VGA color display for any lighting conditions, resolution 800 x 600 pixels
Screen size: 21.3 cm (8.4”)
Temperature Range: Operating: ‐20 to 40˚ C (-4 to 104˚ F); Storage: ‐30 to 65˚ C (-22 to 149˚ F)Powered by Internal Battery (10-hour duration)
Data Storage: Built in 256 GB drive
USB port for data retrieval
24-bit A/D converter
Analog Signal Frequency response: 22 KHz. (‐3dB)
Sampling Digitizing frequency of > 1 MHz (net frequency after DSP > 32 KHz.)
Sampling Frequency accuracy within 0.01%
Sampling speeds of 50 KHz, 75 KHz, and 150 KHz.
Windows 10 Operating System
One (PIT‐QV) or two (PIT‐QFV) channels of acceleration data acquisition
One (PIT‐QV) or two (PIT‐QFV) integrators of acceleration to velocity
PIT‐QV accepts data from one traditional accelerometer
PIT‐QFV accepts data from two traditional accelerometers or from one traditional accelerometer and one traditional instrumented hammer
Input of names and descriptions for each pile tested
Date and time stamps
Signal amplification capability, variable over time available record sizes: 1K, 2K, and 4K
Data can be averaged over a variable number of blows
FFT (Fast Fourier Transform) feature
Includes licenses of PIT‐W Standard and PIT‐S Demo License
Soft carrying case
Full one‐year warranty
Operates in English or Metric units
Technical manual provided in PDF form on a USB drive