Light Weight Deflectometer (LWD) 3.1

Overview

Light Weight Deflectometer ZFG 3.1 is used to determine the dynamic defor-mation modulus Evd in MPa [MN/m²] by means of the dynamic plate load test. Test results provide conclusions on the bearing capacity and compaction quality of soils. The main field of application for LWDs is earthworks in transport infrastructure construction. Further applications are soil investigation and landscaping.

According to ASTM E2835-11 and TP BF-StB Part B 8.3
calibrated according to TP BF-StB Part B 8.4

  • 300 mm base plate with acceleration sensor (MEMS), max. ground pressure 0.1 MPa (MN/m²)
  • Measuring depth/depth of influence: ca. 600 mm
  • Sensor housing ready for dynamic CBR and 150 mm base plate accessory
  • Ergonomic, triangular catch handle with anti-slip powder coating
  • All metal parts with corrosion protection and suitable for use at construction sites
  • Handheld electronics box (data logger) in robust, weatherproof full leather case
  • Automatic calculation of deflection mean, s/v value and modulus (Evd)
  • Multilingual, backlit and graphics-capable display, display of deflection graphs
  • Internal memory and SD-card for up to 10.000 measurements, automatic storage
  • SD card USB adapter
  • Sensor self-test (2G) and integrated calibration memory
  • Preloading impacts can be switched off
  • Power supply: four standard R6 batteries (Mignon type / AA) for ca. 1.500 tests (included)
  • Thermo printer interface
  • Quick starter manual und calibration protocol
  • Detailed user manual online available

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