
The Pundit Lab is a flexible Ultrasonic Pulse Velocity system designed for use in the CMT or research laboratory.
Overview | GX1 vs GX2 | SUE & Utilities | Structures & Pavements | Software & Outputs | Case Studies | Specifications | Support
Collect high-density, georeferenced GPR data across wide areas and view the subsurface in 3D as you scan. Choose the GX2 array for SUE and utility mapping, or the GX1 array for structural, bridge and pavement investigations.
Best suited to:
Best suited to:
Recommended array: GX2
Recommended array: GX1
Cover more ground
Collect multiple parallel profiles in one pass instead of uilding a grid line by line.
See results during acquisition
View georeferenced radargrams and time-slice information in the field rather than waiting until the data is returned to the office.
Produce repeatable mapped data
Combine wheel-positioned GPR data with GNSS, project coordinates and survey linework.
Use one platform for two very different applications
Exchange GX1 and GX2 arrays without purchasing two complete cart platforms.
The GX2 transforms the GS9000 into a high-density subsurface utility mapping system. Its 11-channel, low-frequency GPR array captures an 83 cm-wide swath in each pass, helping operators detect and map buried pipes, ducts, cables, voids and other subsurface features. Live georeferenced data lets SUE teams review coverage on site and produce accurate CAD, GIS and project-coordinate deliverables.
1. Plan the survey
Load satellite imagery, CAD information, project coordinates or survey control.
2. Collect dense multichannel data
Survey an approximately 0.82 m-wide swath with 11 channels in each pass.
3. Review data live
Examine radargrams, georeferenced time slices and marked features while still on site.
4. Interpret and digitise
Add points, linework, tags, photographs and field observations.
5. Process and deliver
Merge survey areas, apply processing and export mapped information for the customer’s CAD, GIS or reporting workflow.
View the images below to see these in action.
The pulse velocity in a material depends on its density and its elastic properties. These in turn are related to the quality and the strength of the material.
It is therefore possible to obtain information about the properties of components by sonic investigation. The Pundit offers users a reliable and accurate method for determining the sonic properties of materials.
Ultrasonic testing can be used for:
An essential tool for investigating a wide range of materials:
Ultrasonic Pulse Velocity testing in its most basic mode is called time of flight. This refers to timing the arrival of an ultrasonic pulse from one transducer to another through a solid medium. The ultrasonic pulse in this instance is a p-wave (or compression wave). The ultrasonic pulse velocity (UPV) is calculated by dividing the distance between the transducer by the time of arrival.

Pundit UPV Tester offers three methods of transmission. These can be seen in the image (right). The method of transmission is determined by access to the concrete elements surfaces and the characteristic being tested. Pundit Lab has an automatic function for indirect (surface wave) measurements). Pundit Lab is calibrated in accordance with EN 12504-4.
Crack Depths
The Pundit has an automated feature which allows crack depths (BS method) to be determined perpendicular to the concrete surface.
Combination of Pundit-SCHMIDT for the Concrete Strength
This is a method (often referred to as the Rebultra method) by which the concrete strength can be calculated using a combination of the rebound value of the concrete and the UPV. Using these two independent factors will give greater accuracy, but must be calibrated using local materials.
The Windows based software Pundit Link, developed by Proceq SA, unlocks the full capabilities of the Pundit Lab, providing the user with:
The figure above shows a screenshot from the software.
System requirements: Windows XP, Windows Vista, Windows 7, USB port. An Internet connection is necessary for future software and firmware updates.
Comes standard with 54 kHz transducers, although a range of frequencies are available from 24 kHz to 250kHz. There are also exponential transducers available for dry coupling and wood applications. There is also new 40 kHz Dry Point Shear Wave transducers available for E-Modulus.
The Pundit comes standard with:
Book a SUE Workflow Demonstration
The GX1 transforms the GS9000 into a high-resolution structural assessment system for concrete slabs, bridge decks and pavements. Its dense, dual-polarisation array captures detailed 3D data across wide areas, supporting reinforcement and cover mapping, moisture and deterioration assessment, and analysis of asphalt and pavement layers. Live visualisation helps confirm survey coverage on site, while post-processing tools produce clear, report-ready condition maps.
1. Define the inspection area
Import the structure, bridge, pavement or survey background.
2. Collect closely spaced profiles
Capture 35 longitudinal and 15 cross-polarised channels with dense spacing.
3. Review coverage in the field
Use live radargrams and time slices to confirm that the required area has been captured.
4. Process the dataset
Apply velocity, gain, background removal, migration, filtering and topographic correction as appropriate.
5. Generate diagnostic maps
Create depth slices, reinforcement maps, layer information or application-specific condition maps.
6. Integrate with the engineering assessment
Export figures, mapped anomalies and raw data for inclusion in the engineer’s final interpretation and report.
Field information
Processed Diagnostic Information
Engineering deliverables
View some of these features at work below, and our case study if you'd like to see more of what the GS9000 can do.
Book a Structural Assessment Demonstration
GS9000 cart with:

Manual for the Pundit Lab UPV tester range.