| Customization: | Available |
|---|---|
| After-sales Service: | All Life |
| Warranty: | One Year |
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It is important to check the quality of the pavements bearing capacity either if it is for roads, ports or airports. Does it match the design value and the load it is exposed to. If not the pavement will fail or suffer an accelerated deterioration. The consequences can be severe and costly over time and safety will be reduced. Knowledge of your pavements structural condition is important to observe in order to prevent the pavement of failing.
Falling Weight Deflectometer (FWD) is one of the most advanced non-destructive testing equipment of road surface strength in the world. It has become a hot topic in the field of road in the world to measure dynamic deflection of road surface and calculate the rebound modulus of road surface.
FEATURES
·"One-Key Operation" The whole testing task can be completed by one single person with pressing just one key on laptop.
·Strong and durable trailer base plate. We have used four-part plates to make better contact with the surface.
·GPS location and temperature measurement (need to be ordered separately)
·Auto capture of deflection value and load value.
·Continuous outdoor working.
·Storage Battery Charging: charging by electric generator on the tractor
·Double Locking System: Hydraulic/ Mechanical
·Emergency System: Lift the load plate when system breaks down.
·Working status of load plate can be monitored on the screen.
·Inertia Braking
·Synchronized turn/break/back light and head warning light with the tractor
TECHNICAL PARAMETERS
System Configurations: Vehicle Factory fitted/configured
Operating Conditions: All weather/Weatherproof
Certifications: Provide factory compliant certificates: test and conformity certificates
Standards: Complies with ASTM D4694 - Standard Test Method for Deflections with a Falling-Weight-Type Impulse Load Device
Dimensions (excl of warning lights): 4500x2000x2000mm
Weight: 450kg
Load range: 12-150kN
Load Pulse Duration: 20 - 30msec
Load Pulse Shape: Essentially half sine
Load pulse rise time: 10 - 15 msec
Load Cell Accuracy: 1% +/- 0.1kN
Load Resolution: 0.1kN (1KPa)
Load Plate: 4-split, 300mm, transverse for even loading
Sensor type: Seismic Velocity Transducer
Geophone Type: Digital (internal memory)
Number of geophones: 1-9pcs (optimum): 0.1 micron (standard configuration is 9 pcs)
Geophone accuracy: Better than 0.2% +/- 1 micron
Geophone resolution: 0.1 micron
Geophone range: 2200 micron
Geophone beam: 2500 micron from centre
Geophone beam connectors: Fast plugs Connector on beam (easy to remove and connect)
Sensor Type: PT100
Number of sensors: 3 automatic (air, surface, asphalt)
Temperature Accuracy: Better than 1%
Temperature Resolution: 0.1ºC
Distance Meter Counter (Accuracy): Better than 0.1%
System (Capacity): Up to 65 test points per hour (depending on distance between test points)
Power Supply: 12/24 VDC alternator
Testing Weights: Weight plates no more than 25kg each (easy to configure)
Data Acquisition System Time history (real time): Digital geophones and load cell to prevent analog losses
Simultaneous sampling (real time): All channels, load cell, temp. and geophones 16 BIT on all channels (load, geophones, temperature, falling height)
Sampling: 25 kHz for all channels
Sampling period: 0-60 ms (chosen by user)
Data storage (peak value): Local storage
Data storage (time history): Local storage
Catch System: Hydraulic Catch System
Calibration Standards: AASHTO R32 - Standard Practice for Calibrating the Load Cell and Deflection Sensors for a Falling Weight Deflectometer
The data from falling weight deflectometers (FWD) are used for structural evaluation of pavements and can be used to calculate remaining pavement life, load-supporting capacity, and the required thickness of structural overlays. The results of these calculations can be used to manage pavement systems at the project or network level. The data of FWD is used as the basis of calculation and analysis, and its accuracy has a major influence on subsequent work.
This FWD calibration system provides users with a fast, convenient and relatively accurate detection method, which is mainly calibrated for the load and deflection measurement systems of the falling weight deflection meter.
LOAD CALIBRATION
Place the reference load cell used for calibration between the load plate of the Falling Weight Deflectometer (FWD) and the measured road surface, and perform the falling weight action at different heights. The data acquisition system saves the collected maximum impact value. Linearly correct the obtained data and the corresponding data collected by FWD, then calculate the correction coefficient and correlation.
SOFTWARE
After setting the parameters, click "Start" to continuously collect data. Input the corresponding data collected by FWD into the current value sequence, and the correlation and conversion coefficient can be calculated. Users can delete data with large deviations, singular values, etc. to obtain a more reasonable correction coefficient.
DEFLECTION CALIBRATION
Superimpose the displacement sensor used for calibration and the displacement sensor of FWD, rigidly connect, and collect the displacement caused by vibration at the same time. Compare the two displacement values, the correlation and correction coefficient can be obtained.
Configuration
0-20T Reference load cell 1
Displacement sensor 1
Speed sensor 1
Calibration stand (customized) 1
Data acquisition system and software 1 set
Connecting cables 1 set
Meter box 1
Zhuozhou Tianpeng (generally refers to Zhuozhou Tianpeng Imp. and Exp. Trade Co., Ltd & Zhuozhou Tianpeng Instrument Manufacturing Co., Ltd.) was founded in 2006, and specialize in the design, manufacture and supply of high-quality construction materials testing machine for concrete, soil, cement, asphalt and etc. We have more than 300 customers worldwide, including many of the major companies around the world. More than 17 years of industry experience, professional technical and service teams help us better meet customer needs, making us an ideal partner.
| Packaging: | Carton box,or specified package |
| Shipping method: | ---Express: UPS, FEDEX, DHL, TNT, EMS, etc ---Air shipping: Please choose your convenient shipping method according your detail requirement. ---Sea shipping: large quantity order |
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