CHUM

Cross Hole Ultrasonic Monitor 
The Most Advanced Cross Hole Sonic Logging Test System (CSL Tester)

  • High-Resolution Crosshole Sonic Logging Test for Deep Pile Foundation Integrity
  • Advanced 2D & 3D Tomography for Defect Visualization & Analysis
  • Meets ASTM D6760 & International Standards for CSL Testing
  • Fast Testing Speed – Up to 700m of Sections (Profiles)  Per Hour!
  • Modular, PC-Based System – Works with Any Computer via USB

What is CSL Testing & Why is It Important?

CSL testing (Crosshole Sonic Logging Test) is a non-destructive testing method used to assess concrete quality in deep foundations. It ensures that drilled shafts and piles are free of voids, defects, and other flaws that could compromise structural integrity.

The CHUM system by Piletest is an industry-leading CSL test system designed for accurate and high-resolution cross hole ultrasonic tests on deep foundations.

CHUM is Designed For:

Pile CSL test with CHUM at the construction site
  • Cross Hole Sonic Logging Test for Piles – Detects flaws, voids, and anomalies in concrete piles.
  • High-Resolution 2D & 3D Tomography – Provides clear visualization for defect analysis.
  • Cross Hole Ultrasonic Test (CSL Test) Standrad Compliance – Meets ASTM D6760 & AFNOR NF P 94-160-1.
  • Fast & User-Friendly Operation – Minimal training is required—top performance enabling high-speed data collection.

Industry Compliance & Regulations:

  • ASTM D6760-16 – Standard Test Method for CSL Testing of Concrete Foundations.
  • AFNOR NF P 94-160-1 – International standard for crosshole sonic logging test procedures.
  • Best CSL on the market  – It delivers industry-leading accuracy & reliability.

The CHUM – How it work in 2 minutes

How Does a
Cross Hole Sonic Logging Test Work?

The CHUM system operates using the Cross Hole Sonic Logging (CSL) method, where ultrasonic pulses travel through water-filled access tubes embedded in the concrete. The wave’s arrival time and energy indicate concrete integrity.

Step-by-Step Process for a Cross Hole Sonic Logging Test:

  • Install Water-Filled Access Tubes into the Concrete Pile – Tubes are embedded before the concrete cures.
  • Lower CHUM Ultrasonic Transmitter & Receiver Probes – The probes travel through the tubes, scanning the pile.
  • When pulling back the sensors, measure Wave First Arrival Time (FAT) & Relative Energy (RE) – The concrete’s quality affects the ultrasonic wave behavior.
  • Analyze & Detect Defects – The CHUM CSL testing software processes the data in real time.
  • Generate 2D & 3D Tomography Models – Advanced visualization helps in understanding the internal pile flaws.

Why Use CHUM for Cross Hole Sonic Logging Test for Piles?

  • Fastest CSL Test System – Up to 700m of CSL sections tested per hour.
  • Detects Flaws, Voids, Cracks, and Defects in the pile concrete.
  • Immediate Data Processing & High-Resolution Reporting.
  • Complimentary 2D support Tomography and 3D Tomography viewing capability 

 1. High-Resolution CSL Testing for Accurate Foundation Integrity Analysis

  • Detects defects, voids, and poor concrete quality with high precision.
  • Supports Single Hole Ultrasonic Testing (SHUT/SSL) for flexible foundation assessments.
  • Industry-leading CSL signal clarity for deeper penetration & more accurate results.

2. Advanced 2D & 3D Tomography for Comprehensive Pile Analysis

  • 2D Tomography Included – Real-time defect visualization during CSL testing.
  • 3D Tomography (Optional Service) – Generates a full-depth 3D defect model.
  • Multiple 3D Analysis Techniques – Fuzzy Logic, Parametric & 3D Reconstruction for best accuracy.

3. Modular, PC-Based CSL Testing System

  • Connects to Any Windows PC via USB – Never settle for outdated embedded hardware.
  • No Need for Extra Data Transfer Steps – Seamless operation & instant data analysis and reporting on standard MS WORD format.
  • Compact & Portable System – Easy to transport and deploy in field conditions.

Why CHUM is the Best CSL Testing System Compared to Competitors

Unlike traditional CSL testing devices, the CHUM system offers:

  • Faster Testing Speeds – Test up to 700m of CSL sections per hour.
  • More Accurate Readings – Industry-leading ultrasonic signal clarity. Best signal-to-noise ratio for greater sensitivity and Automatic Gain Control (AGC) for best signal quality.
  • Real-Time 3D Tomography Analysis – Instant defect visualization.
  • PC-Based System – No need for outdated embedded hardware.
  • 3-Year Standard Hardware Warranty (Industry Best)
  • Complementary Second Opinion Support (SOS) service on reports 

Let’s Connect

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