Liquid Limit (Cone Penetrometer Devices) for Soil Field Testing Instrument

The cone penetrometer apparatus is used to determine at which moisture content the clay soils changes from a plastic to a liquid state (liquid limit) and it is used also for the determination of undrained shear strength.
Two versions are available: the standard and the semi-automatic.

The penetrometer has a cast iron base with leveling screws, digital penetration measurement gauge 0.01 mm precision, release button and automatic zeroing. It is equipped with lead screw gear arrangement, leveling screws and spirit level.

The head can be clamped at any desired height. A rack and pinion and pointer assemble provides fine adjustment of the cone tip to sample.

It incorporates a clutch mechanism which makes reading of penetration and subsequent resetting a simple and accurate operation.

The semi-automatic model is also equipped with an automatic controller, which automatically releases the plunger by a magnetic device, and with a micrometer vertical adjustment and an adjustable electronic timer of the fall time.

The electronic timer allows the user to set up and read the fall time of the needle during testing.

Penetration cones and sample cups has to be ordered separately. See accessories.