Latest Pile Testing Crosshole Sonic Logging
Test Method:
The test requires at least two access tubes or pipes, which are installed in the concrete before it sets. Once the concrete has hardened, a sonic logging device is lowered into one of the access tubes and a transmitter sends a high-frequency sound wave through the concrete to the receiver in the other access tube. The receiver then measures the time it takes for the sound wave to travel between the two access tubes, as well as the amplitude and frequency of the wave. This process is repeated for different pairs of access tubes to create a profile of the concrete's integrity along the length of the foundation element.
Cross sonic logging is a widely used testing method in the construction industry and is considered to be a reliable and accurate means of assessing deep foundation elements
Main parts about equipment:
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| U5700 host | Depth recording wheel | Guide wheel on pipe mouth | Tripod | Radical transducer |
Features:
1. Test 3 or 6 profiles per lift with a lifting speed > 300 test points per min.
2.Gains and delays are adjustable for any channel at any time, ensuring the data accuracy and reliability.
3.Display all 6 profile information on one screen, thus making the quality of the entire pile clear.
4.The expert real-time online help function makes operation simple.
5.The supplied software is designed especially for field work, convenient and efficient.
6.Horizontal testing, inclined testing, retest, and finer increment testing allow for the accurate identification of pile defects.
7.Built-in mass SSD (solid state disk) and mass lithium battery are perfect for field work.
8.Thumb drive enables direct transmission of data, convenient and simple.
9.Professional analysis-processing software, generates and prints test reports;
10.Strong and sturdy carry-case, waterproof, damp-proof, and dustproof.
Technical Specification
| product name | Multi-channel ultrasonic pile measuring instrument |
| product model | | ZBL-U5700 |
| main engine | number of channels | | 4 |
| Number of test profiles at one time | | 6 |
| Storage method | Built-in electronic hard disk (4GB) + large capacity U disk |
| Sound time range | ±1677.7ms |
| Emission voltage | 65,250,500,1000 V four gear adjustable |
| Amplification gain | 82dB |
| dynamic range | 154 dB |
| Gain accuracy | 0.5dB |
| Band width (12dB) | 2~500kHz |
| receiving sensitivity | ≤10μV |
| intertrack crosstall | ≤1/400 |
| communication interface | USB,MiniUsb,WiFi,Bluetooth |
| test mode | Flat test, double test, encryption, oblique test power |
| supply mode | built-in | Lithium batteries or a mobile power supply |
| outlay | 220V AC/DC |
| operate time (h) | > 8 |
| work environment | temperature | -10℃~+40℃ |
| humidity | < 90%RH |
| Size of host | 270mm×220mm×75mm |
| Weight of host | 2．5kg |
| Connection mode of the lifting device | Wired, wireless switchable |
| Wireless lift device | Maximum transmission distance | ≥5m |
| resolution ratio | 1cm |
| operate time | ≥20h |
| power supply mode | Built-in lithium battery |
| Record spacing | From 2 cm to 25 cm is optional |
| hoisting speed | > 60m / min (5 measuring points per meter) |
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