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Olson Instruments, Nondestructive Testing Equipment, Nondestructive Evaluation, Olsen | Testing Infrastructure Nondestructively

NDT, Nondestructive Testing Equipment, Sonic Echo, Impulse Response, Drilled Shafts, Auger Cast Concrete Piles, Bridge Abutments

February 23, 2020

East Coast

NDE users seminar offered at Olson's Rockville MD office

March 10-12 2020

Click here for details

NDT System Add-On — Sonic Echo/Impulse Response

USA Sales: 303.423.1212          International Sales: Click here for Agents

Sonic Echo - Impulse Response Pile Integrity Testing

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Base Model:
SE-1 [Sonic Echo]

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Scroll down to see a list of Key Features and Models available for the Sonic Echo Add-on System.

Save money! Contact Olson Instruments when adding on to an existing system, or purchasing multiple systems as some of the components are common to other test methods.

Contact Olson Instruments for complete details about the Sonic Echo systems available as an add-on test with the Freedom Data PC or NDE 360 platforms.

For a quote, call our toll free number at 1-888-423-1214 or fill out our


Sonic Echo-Impulse Response is used for low strain integrity testing of piles and determination of deep foundation length.

The Sonic Echo-Impulse Response system (also known as Pile Integrity Testing, or PIT) is designed to determine the length and integrity of foundations when the top or part of the upper side of the foundation is accessible.  This system and its associated methodology can be used on both new and existing foundations and is performed by impacting the foundation and recording echoes from a defect or the foundation bottom with a nearby receiver(s). This method works best for columnar type foundations such as piles and drilled shafts, but has also been used successfully on mat foundations, abutment walls, and similar structures. Sonic Echo/Impulse Response is applicable on concrete, wood, and round steel pipe foundations.

The Sonic Echo (SE) method is normally conducted in conjunction with the Impulse Response (IR) method together as the Sonic Echo/Impulse Response method. Olson Instruments sells the base model SE-1 system that exclusively uses the Sonic Echo methodology without the Impulse Response analysis. This system, along with its associated software, uses only the time domain information in the data for the interpretation of reflections. The IR option (SE/IR-1 Model) provides the user with the ability to transform data from time domain into frequency domain. The software then automatically calculates the transfer and coherence functions, which may be useful for data quality analysis as well as providing further information about reflections within the structure.

Olson offers Sonic Echo systems for use with three different platforms as shown in the chart below. Olson's SE and SE/IR Models are sold as add-on systems for the NDE 360 and Freedom Data PC platforms while the Foundation Test Gauge (FTG) is designed to be used with a Windows Device supplied by the user.

The SE/IR-1 + PS-1 Model combines Sonic Echo/Impulse Response (SE/IR) with Parallel Seismic (PS) for complete foundation testing at a reduced price as the systems share many common components.

Freedom Data PC or NDE 360 Required,
Sold Separately
Freedom Data PC
NDE 360
FTG requires Windows Device
(performs SE only)


Hands-on training classes are available for all of our Nondestructive Testing Methods at our Wheat Ridge, Colorado (USA) location, which is a suburb located appromately 15 minutes northwest of downtown Denver. Training may be available at your location by one of our agents upon special arrangement.


Applicable On:

  • Drilled Shafts
    (Bored Piles)
  • Auger Cast Concrete Piles
  • Driven Concrete Piles
  • Bridge Abutments
  • Wall Piers
  • Wood Piles

Test For:

  • Cracks
  • Voids
  • Soil Instrusions
  • Uncured or Weak Concrete
  • Diameter Changes
    (bulb or neck)
  • Deep Foundation Depths

Meets ASTM:

  • ASTM D5882-00

Meets ACI:

  • ACI 228.2R


All of Olson Instruments have been researched, tested, and used on-site daily by our sister company, Olson Engineering, world reknowned for NDT consulting. The OE Website is loaded with Tech Brief and project photos using the equipment shown on this website. Purchase our products to “do-it-yourself”, or hire an Olson Engineering Nondestructive Testing professional for your next project