Penetrometers / deflectometers

Ground bearing capacity measurer INSPECTOR-4M from ENGLO, Estonia.

Portable falling weight deflectometer (FWD) INSPECTOR-4M from ENGLO OU (Estonia) is a portable non-destructive device to estimate the bearing capacity of the ground either with or without the binding material. The ground elastic modulus is measured in units of MPa. The device may be used in pavement testing for road construction, building etc.

INSPECTOR-3 uses the falling weight energy for ground elastic deformation. Based on measurement of this deformation, dynamic elastic modulus and several additional parameters can be calculated.

The measurement data is easily presented

The measurement results and other data appear on the backlighted LCD. The results of up to 200 measured series are saved in the device inner memory (each serie contains 8 tests). The saved data can be transferred to PC by BLUETOOTH connection or USB port. Convenient PC software enables automatically produce measurement protocols with measurement date, time and ambient air temperature.

When INSPECTOR-4M is used with additional GPS-module, the GPS co-ordinates of each serie will be written into the protocol. Therefore all series can be tracked in Google Earth and Google Map.

The new model is more rugged

INSPECTOR-4M has rugged and waterproof aluminium body. For transport the device is placed into a reinforced waterproof wooden trunk.

Technical specification:

• Falling weight	10 kg
  Loading force	23 kN
  Falling weight drop height	800 mm
  Loading plate diameters	140 and 200 mm
  E-modulus range	5 - 900 MPa
  Operation voltage	18 V (two 9 V ALKALINE batteries)
  Temperature range	-10 °C to +40 °C
  Protection level	IP65
  Weight without the trunk	16 kg
  Dimensions	1150 x 110 x 110 mm