HMP LFGpro adalah alat pengujian kepadatan dan daya dukung tanah yang menggunakan metode Light Weight Deflectometer (LWD) untuk mengukur deformasi permukaan tanah secara cepat dan akurat. Alat ini bekerja dengan meletakkan load plate pada area uji yang telah dipersiapkan, kemudian mekanisme pembebanan menghasilkan impuls beban melalui jatuh bebas drop-weight ke elemen pegas.
| Mechanical loading mechanism | |
|---|---|
| Total weight | 15.0 kg |
| Weight of drop-weight | 10.0 kg |
| Maximum impact force | 7.07 kN |
| Duration of impact | 17.0 ± 1.5 ms |
| Resilient element | package comprising prestressed disc springs |
| Load plate | |
|---|---|
| Diameter | 300 mm |
| Plate thickness | 20.0 mm |
| Weight | 15.0 kg |
| Electronic settlement measuring instrument | |
|---|---|
| Power supply | Rechargeable Lithium-ion polymer battery pack |
| Dimensions | 210 mm x 100 mm x 31 mm |
| Weight | 0.45 kg |
| Settlement range measured | 0.1 to 2.0 mm ± 0.02 mm |
| Range measured deformation modulus | Evd < 225 MN/m² |
| Temperature range | 0 bis 40 °C |
| Display | 3.5″ TFT colour display |
| Interfaces | Bluetooth, USB, thermal printer |
| GPS | integrated |
| Memory capacity | up to 1000 test series |




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