ESD5.2 - Direct Shear Device
ESD5.2 - Direct Shear Device
ESD5.2 - Direct Shear Device
For shear testing according to DIN EN ISO 17892-10 (formerly DIN 18137-3) as well as oedometer and swelling tests according to DIN EN ISO 17892-5 (formerly DIN 18135)
The compact apparatus typ ESD5.2 is a laboratory tabletop device for performing direct shear tests according different standards such as ISO 17892-10. The shear axis is equipped with an electromechanical precision drive for speed-controlled experiments. The load / normal stress is generated electropneumatically (compressed air connection necessary!) by the tabletop-consolidation machine PLS5. The integration of the control electronics of the shear box and load frame in a tabletop housing made it possible to set up this space-saving shear device. The shear cell is very robust and made of stainless steel entirely. The sample can be installed in a few simple steps. The lower shear frame is guided horizontally, the upper shear frame is guided vertically. The shear gap can be continuously adjusted from 0 mm to a maximum of 2 mm.
- high speed multi-core-system with bus coupling, each drive unit (e.g. horizontal and vertical gear) using it’s own high resolution closed-loop controller with 1 ms sampling time
- regulated electropneumatic drive for normal stress generation
- regulated electromechanical drive for generating the horizontal shear stress with integrated shear path measurement
- robust construction, all water or soil-contacting parts are made of stainless steel, including the filter stones
- very compact design with a high stiffness frame
- horizontal low-friction guided lower shear frame and vertical low-friction guided upper shear frame
- testing with constant volume conditions / dilatancy-free testing
- stepless adjustment (between 0 and 2 mm) and fixation of the shear gap after consolidation process
- serial interface for PC-controlled testing with data logging; cyclic measurement data logging with GeoDESC software, displaying and transfering to Microsoft EXCEL for advanced evaluation purposes
required accessories:
- shear frames: Ø 71,4 mm; Ø 56,4 mm; □ 60 x 60 mm
- compressed air connection / laboratory compressor
- compressed air regulator with filter
- oedometer cells for consolidation tests
max. load: | 5 kN (1250 kN/m² with 40 cm² sample area) |
max. shear force: | 2 kN |
shear rate: | 0,001 .. 10 mm/min |
max. shear path: | 21 mm |
settlement measurement: | 12,5 mm, 1 µm resolution (with dial gauge) |
max. operating pressure: | 3,5 bar |
power supply: | 90 .. 230 V AC, 50/60 Hz |
dimensions: | 350 x 350 x 550 mm (W x D x H) |
weight: | approx. 53 kg (load frame approx. 32 kg, shear-box approx. 21 kg) |