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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