The HMP LFG  light drop weight tester also referred to as Light weight deflectometer or LWD  is a portable  dynamic impulse plate load tester based on accelerometer sensor used  for determining the soil bearing capacity and compaction quality of soils and non-cohesive sub-bases.

• Total weight load mechanism: 15,0 kg
• Falling weight: 10,0 kg
• Loading force: 7,07 kN
• Time of influence: 17,0 ± 1,5 ms
• Diameter plate: 300 mm
• Thickness plate: 20,0 mm
• Power: 4 x R6 batteries
• Dimensions: 210 x 80 x 25 mm
• Measuring range shrinkage: 0,1-2,00mm ±0,02mm
• Measuring range Evd : < 225 MN / m²
• Temperature range : 0 – 40 ºC
• Loading mechanism with bubble level.
• Load plate with acceleration transducers.
• Drop weight 10 Kgs.
• Electronic settlement measuring instrument with measuring range Evd <225 MN/m², 4 line display LCD screen, displaying settlement data, settlement speed (s/v relation) deformation modulus Evd & 200 series internal memory.
• Thermal printer with 5 thermal printer rolls.    
• Storage for upto 200 test results.           
• Software for evaluation, revising & archive the measured data.
• 2 GB USB Stick, PC connecting cable, Instruction manual.
• Possible combinations deflectometer HMP LFG 4:

Deflectometer + measuring device
Deflectometer + measuring device + miniprinter
Deflectometer + measuring device + Software
Deflectometer + measuring device + Software + miniprinter

• Warranty: 24 months