CHUM
Cross Hole Ultrasonic Monitor
The CHUM (Cross Hole Ultrasonic Monitor) uses the Crosshole Sonic Logging CSL testing method to perform high-resolution quality control of deep foundations.
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Up to 150m (450') deep
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Tomography ready complimentary
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Standards: ASTM D6760, AFNOR NF P 94-160-1
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Integrated support for DFI CSL Rating Criteria - See CHUM software
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Applications
For testing pile integrity based on the CSL method of medium to large piles with supporting access tubes. More about the crosshole test method
Fast and Reliable Crosshole Deep Pile Foundations Testing
Reliable
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100% QA tests at 16-atmosphere pressure, vibration, and extreme temperature.
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The CHUM case can tolerate drops and shocks.
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3 years warranty!
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Rugged connectors, cables & sensors
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10 years of free software
Easy to Use
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Usually, no training is needed, and the system can be self-taught in hours. (No expensive training days)
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Supports AGC (Automatic Gain Control) for simple, fast, and accurate performance in dynamic conditions.
Top Performance
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Up to 150m (450') deep. (deeper optional)
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A clean signal on 3m and more on solid concrete.
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The cleanest signal in the industry.
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Productivity - 4 tubes X 25m piles - 8 such piles tested in 2 hours!
CHUM crosshole ultrasonic monitor pile test
CHUM crosshole ultrasonic monitor pile test
CHUM crosshole ultrasonic monitor pile test
CHUM crosshole ultrasonic monitor pile test
CHUM - Technical Specifications
Physical
Housing
Dimensions
Weight
Temperature range
Rugged, Environment-proof, water-resistant housing.
430mmL x 325mmW x 105mmH (instrument only)
3.8 kg (instrument only)
5.0 kg (instrument with typical tablet)
16.0kg (Typical shipping)
-20°C to +55°C (Operating)
-40°C to +80°C (Storage)
Power
Internal
External
Rechargeable Lithium Ion battery 11.1V 4.4Ah
(two days of typical use)
100-240V AC operation/charging
Standards
ASTM D6760 –16
​AFNOR NF P 94-160-1
Meets or exceeds. See details
Technical
Transducers
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Cables
Sample rate
Gain
Depth meters
Dual-mode Transceivers, 50kHz nominal, 16bar pressure-tested housing, 25mm diameter
Heavy-duty polyurethane
500kHz (2μS resolution)
8-level auto gain control (AGC)
Two 24-bit counters. <0.1% error
Performance
Pile lengths
Tube spacing Productivity
Storage
1m to 150m
Up to 5m in good concrete
Up to 3000m/Day by a single operator
Unlimited
Computer (Minimum)
Windows XP/Win7/Win10/Win11.
800x600 resolution or higher
Requirements
Output
Reporting
Language
Arrival time, energy and wave speed curves,
“waterfall” presentation, fuzzy-logic and 3D
tomography
Multi-lingual user-interface and reporting
Cable reels
Software
Miscellaneous
50m, 100m, 150m, and custom lengths
3DT - Three-dimensional Tomography (Also provided as an email service)
12V DC car battery power adapter
Options
Other Customers Also Purchased
GPC
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GPC the PDA system from Piletest
It is the next generation of dynamic pile testing systems, designed with simplified software and higher ease of use than incumbent systems. Professor George G. Goble, the pioneer of dynamic pile analyzers, designed the GPC system. It comes with a unique Combiducer and 100% lossless wireless data transmission,
3DT
3 Dimensional Tomography
While normal (1D) CSL can only show the depth of an anomaly, tomography can help in the visualization of the shape, size, and location of anomalies. It is an analysis and presentation method of captured CSL data, that projects the logged results into two dimensional (2D) plane or three dimensional (3D) body.
PET
Pile Echo Tester
The PET uses the Pulse-Echo method (PEM) for a quick pile integrity test (PIT test) on a site with a large number of piles. A pile test starts when the pile top is struck with a lightweight handheld hammer. The reflected wave is captured and analyzed by the PET's digital accelerometer to provide information regarding the length and shape of the pile.
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12345678 Example Accessory #2This is example accessory #2 description.
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