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Integral Testing
Application
*Low strain pile integrity testing by reflected wave method
Applicable Standards
*Standard test method for low strain impact integrity testing of deep foundations ASTM D5882-07
*Technical code for detection of building foundation pile JGJ 106-2014
*Dynamic testing technology regulations on highway engineering foundation pile JTG/T F81-01-2004
*Nondestructive detection code for railway engineering foundation pile TB 10218-2008
*Technical code for defection of building foundation JGJ 340-2015
Principle
The test is based on wave propagation theory. The name “low strain pile integrity test” stems from the fact that when a light impact is applied to a pile it produces a low strain. The impact generates a stress wave that travels down the pile. When the downward stress wave encounters a change in cross section or in concrete quality, it generates reflected wave that is later observed at the pile top. By analyzing the propagation time,amplitude and phase of that reflected wave, it has the evaluation of pile integrity ultimately.
Technical Specifications
Application
*Low strain pile integrity testing by reflected wave method
Applicable Standards
*Standard test method for low strain impact integrity testing of deep foundations ASTM D5882-07
*Technical code for detection of building foundation pile JGJ 106-2014
*Dynamic testing technology regulations on highway engineering foundation pile JTG/T F81-01-2004
*Nondestructive detection code for railway engineering foundation pile TB 10218-2008
*Technical code for defection of building foundation JGJ 340-2015
Principle
The test is based on wave propagation theory. The name “low strain pile integrity test” stems from the fact that when a light impact is applied to a pile it produces a low strain. The impact generates a stress wave that travels down the pile. When the downward stress wave encounters a change in cross section or in concrete quality, it generates reflected wave that is later observed at the pile top. By analyzing the propagation time,amplitude and phase of that reflected wave, it has the evaluation of pile integrity ultimately.
Technical Specifications
| Model Number | NL 4047 X / 001 |
| Alternate Model | RSM-PRT(N) |
| Display Method | 6.4 inch True-Color LCD Screen (Resolution : 640 x 480 (adjustable backlight) |
| Storage Capacity | 16G Electronic Hard Disk |
| Signal Acquisition Method | Wired |
| Master Control System | Low Powered Embedded System, Basic Frequency ≥1 GHz, Memory : 512 M |
| Sampling Interval | 5 ~ 1000μs |
| Floating Point Magnification | 1 ~ 256 |
| Recording Length | 1k |
| A/D Conversion Accuracy | 24-bit instantaneous floating point |
| System Noise Voltage | < 20μV |
| Dynamic Range | ≥100dB |
| Data Report Method | USB |
| Frequency Bandwith | 2 ~ 12000 Hz |
| Sensor Bandwith | 0.5 ~ 9000 Hz |
| Power Supply Mode | Removeable lithium battery; desktop charger is supported Service life ≥10h |
| Operation Mode | Touch Screen |
| Number of Channels | 1 |
| Sensor | Piezoelectric Accelerometer & Speedometer |
| Trigger Level | Seven-level selectable |
| Operating Temperature | -20 ~ +55°C |
| Shell | High-strength engineering plastics |
| Dimensions | 220 x 160 x 56 mm |
| Weight | 1.3 kg (including lithium battery) |
Inquiry - Low Strain Pile Integrity Tester NL 4047 X / 001
