TBTLWD-1 Light Weight Deflectometer (LWD)
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TBT Light Weight Deflectometer LWD is a portable version of FWD, with loading cell & geophones, it can be used to test asphalt pavement & railway subbase, the data get from LWD can be used to calculate the strength of multiple pavement layers.
Technical Parameters
- Loading device
- Hammer:10.0kg (optional 15kg, 20kg)
- Maximum drop height: 700mm
- Maximum impact loading:20kN
- Pulse loading shape: Half sine
- Wave pulse loading duration:15~30ms
- Material: galvanized alloy steel
- Weight:15kg (including 10 kg hammer)
- Height:1100mm
- Loading board
- Diameter:300mm (optional 200, 450mm)
- Thickness:20mm
- Material:galvanized alloy steel
- Weight:15kg
- Electronic Settlement (wireless control)
- Loading force measurement range:25 kN
- Loading force measurement accuracy:<2%
- Displacement measurement range:2mm
- Displacement measurement accuracy:< 1%
- Measurement time per point:<1 minute
- Sensors for displacement measuring:3pcs (expandable)
- Data storage capacity:2000 group test data
- Power supply:Lithium battery
- Continuous working time:12 hours
- Working environment temperature range:-10 ~ 40°C
- Working environment humidity range:not more than 85% RH (no condensation)
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