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Cross Hole Ultrasonic System for deep foundations

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Code: C373-10N
ASTM D6760

The Cross-hole Sonic method is used to perform high-resolution quality control on deep foundations. The system uses an ultrasonic wave sent from an emitter to a receiver while both are pulled through water-filled access tubes embedded in the concrete. The measured arrival time and energy are directly related to concrete quality.

The digital display included in the equipment allows one to acquire, save and print the data. It is equipped with a Wi-Fi module so that no electric wires are needed and all the operations on site can be carried out with maximum safety.

The equipment includes one digital central unit, two ultrasonic transducers, two 60 m cables, two motorized reels and a carrying case for everything listed.

HARDWARE SPECIFICATIONS

  • Carrying case with wheels
  • Operation temperature range: -20 to +80°C
  • Ultrasonic probe frequency: 52 kHz
  • Minimum measuring step: 10 mm
  • Diameter of the probes: 35 mm
  • Two motorized reels to roll and unroll the probe cables
  • Cables length: 60 m

ACQUISITION SYSTEM SPECIFICATIONS

  • Resolution: 12 bits
  • 2048 samples per event
  • Time base: 100/200/500 ns, 1/2/5/10/20 µs
  • Differential error <0.03 %

Power supply: 12V DC, 1 battery Li-Ion, 10.5 Ah for each reel
Dimensions: 800x600x400 mm
Weight: 30 kg approx.

Cross-Hole

ASTM D6760-02
  • Housing: rugged, environment-proof, water-resistant housing.
  • Temperature range: -25 to 60 °C (operating), -40 to 70 °C (storage).
  • Transducers: dual-purpose transceivers, 50 kHz nominal, pressuretested housing, 25 mm diameter.
  • Cables: detachable heavy-duty polyurethane wound on reel.
  • Cable length: 50 m (100 m and 150 m cables are available upon request).
  • Sampling rate: 500 kHz (2 μs resolution).
  • Gain: 8 level automatic gain control (AGC).
  • Depth meters: two 24-bit counters, <0.1% error.
  • Pile measuring range: 1 to 145 m
  • Tube spacing: up to 4 m in good concrete.
  • Productivity: up to 3000 m/Day by a single operator. 
  • Memory storage: unlimited.
  • PC minimum requirements: Windows 2000/XP, 300 MHz, 128 Mb, 800x600 resolution (not included).
  • Reporting: arrival time, energy and wave speed curves, “waterfall” presentation, dual presentation, fuzzy-logic, tomography.
  • The package includes: a computerized central unit, two ultrasonic transducers, two 50 m cable reels, two depth meter pulleys, cables and AC power adapter, and the software.
  • Language: Multi-lingual user-interface and reporting.
  • Power supply: internal rechargeable lithium ion battery (two days of typical use), external 100-240V AC (operation/charging).
  • Dimensions: 430x325x105 mm (instrument only).
  • Weight: 3.8 kg (instrument only).