The Motorized Liquid Limit Machine with Counter is the most accurate because of the special geared motor that assures the proper operating speed of 1.9-2.1 drops per second. An on-off switch is provided.
Liquid Limit is the water content at which soil changes from liquid to plastic state. It is arbitrarily defined as that point where two halves of a soil sample flow together when jarred in a specified manner using a Liquid Limit machine.
The Liquid Limit machine consist of a brass cup suspended from a carriage designed to control its drop exactly 1cm onto a hard rubber base. Height of drop is adjusted by a nut at the rear of the cup carriage using the gauge at one end of the plastic Casagrande grooving tool included. The cup attaches to the carriage by a pin allowing easy removal for cleaning and inspection. All mechanical parts are machined from solid brass. Rubber feet isolate base from work surface.
Electrical: 115V/60Hz
Meets Test Methods:
AASHTO T89
AASHTO T90
ASTM D 4318