FWD-2000

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: 0.1℃

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