EVT3 - Laboratory Vane tester

for determining the undrained shear strength of soils acc. DIN 4094-4

Automatic laboratory vane shear tester for determining the undrained shear strength of soils with a viscous to stiff consistency


  • Intuitive operation and easy handling with 4,3” touch screen with separate function keys and haptics
  • high speed multi-core-system with bus coupling,  control loop with 1 ms sampling time
  • precision electromechanical drive for generating the shear stress
  • Robust construction with a very stiff measuring frame and height-adjustable measuring crossbeam
  • Low-friction bearing of the entire vane drive, so that frictional forces, gear efficiency or bearing friction have no influence on the torque measurement
  • separate measurement of the torques "right" and "left" by precision sensors made in Germany
  • Tare function for torque measurement
  • Vane assembly using a clamping device
  • Large base plate to accommodate nozzles and other sample containers up to Ø 210 mm
  • Practical quick-release device with one-hand operation for holding and fixing the sample container
  • serial interface for PC-controlled testing with data logging; cyclic measurement data logging, displaying and transfering to Microsoft EXCEL for advanced evaluation purposes

Recommended Accessories:

  • EXCEL-Template for Vane testing incl. protocol sheet EXL.EVT
  • different types of vanes (d x h [mm]):
    Vane A    12,7 x 12,7 mm
    Vane B    12,7 x 19,0 mm
    Vane C    12,7 x 25,4 mm
    Vane D    20,0 x 30,0 mm
    Vane D1  30,0 x 20,0 mm
    Vane E     25,4 x 50,8 mm
    Vane F     30,0 x 60,0 mm
    Vane G    40,0 x 80,0 mm
    Vane H    30,0 x 80,0 mm
Max. torque: 
3 Nm
0,001 Nm
Max. shear stress: 
up to 700 kN/m²; depending on the vane used
Max. rotation speed: 
20 °/s
0,0001 °/s
Shear path: 
Holder for cylinder: 
up to Ø 210 mm
Power supply: 
230 VAC / 50 Hz
Dimensions (WxDxH): 
530 x 450 x 800 mm (vane tester)
255 x 330 x 155 mm (control box)
approx. 29,5 kg (vane tester)
approx. 5 kg (control box)