Liquid Limit Devices (Casagrande)
Used to determine the moisture content at which clay soils pass from a plastic to a liquid state. Comprises: removable brass cup, adjustable crank and cam mechanism, blow counter, and base.
The grooving tools, which also refer to the different Standards, are not included and have to ordered separately.
CONTROLS models are not certified to NZS, the cup may or may not pass calibration due to very specific requirements.
But as alternative, we can supply more expensive models from Australia, certified to AS.
Models from CONTROLS:
22-T0030/E: Liquid limit device, BS 1377:2 version
22-T0031/E: Motorized liquid limit device, BS 1377:2 version. 230 V, 50 Hz, 1 ph
Grooving tools from CONTROLS:
22-T0032/P: Plastic, pack of 10 to BS 1377:2 (usually in stock)
22-T0032/AP: Plastic, pack of 10 to ASTM D4318, AASHTO T89 and UNE 7377
22-T0033: Metal, single to UNI 10014
22-T0032/AE: Metal, single to to ASTM D4318 and EN 17892-12
The Australian liquid limit device is a hand operated unit designed and manufactured to conform to Australian Standards (AS1289.3).
A carefully machined unit,the cup height is fully adjustable and the drop is set at 10mm at the time of manufacture. A calibration certificate of the hardness of the block can be supplied with the machine at extra cost.
Also available is machine fitted with an electric motor which gives the required rate of two revolutions per second. A mechanical counter is fitted which automatically records the number of drops during a test.