Digital Direct Shear Machine, 110v/60hz
HM-382

Shear displacement tests determine direct and residual shear of consolidated drained and un-drained soils and give engineers valuable
information for evaluating strength and stability of soils. The test is performed on a variety of soil types with either undisturbed or remolded
soil samples. The specimens are carefully trimmed into a Direct Shear Box, which is split horizontally to allow individual movement of the upper and lower halves. A vertical confining
load is applied to the specimen, and a horizontal shear force is applied to the lower half of the box. The upper half of the shear box remains stationary during testing. After shearing failure has occurred and force measurements have been determined, the direction of shear force can be reversed to determine residual shear values. L.T.S. offers dead-weight or pneumatic shear machines with varying stress and strain
measurement capabilities.

HM-381 and HM-382 Tabletop units with
pneumatic vertical loading use the patented CONBEL ® loading system to apply confining pressures to the sample. Vertical loads are applied using two pneumatic pistons. A small,
rolling diaphragm piston accurately applies light vertical loads of 4 to 100 lbf (0.018 to 0.44kN)and the large diameter piston applies loads up to 1500 lbf (6.67 kN). This design increases the sensitivity and accuracy of the light load system. Loading is controlled by setting the precision regulator to the desired pressure per
the included calibration chart. Load settings are displayed digitally and are accurate to ±0.25%.Both pneumatic shear machines are completely self-contained units, and the need for loading weights is eliminated.

HM-382 also includes a load cell with digital
readout for shear load measurement.
Consolidation and shear displacement readings
are obtained with horizontal and vertical
displacement transducers instead of dial
indicators. RS-232 data output transfers data to user s PC in ASCII format.

Requires 110V/60Hz electrical supply ( F models require 220v/50Hz supply) and 90psi (6.2 bar) compressed air supply. Overall dimensions: 36 x 14.5 x 54 in (914 x 368 x 137 mm) WxDxH. Shipping data: 300lbs without weights; Cu. Ft.: 16.