Automatic Digital Cone Penetrometer

An Automatic Digital Cone Penetrometer is a laboratory device used to determine the Liquid Limit (LL) of fine-grained soils using the cone penetration method. It measures the depth a standard cone penetrates into a soil sample under its own weight within a specified time. Features • Digital display for precise penetration reading • Automatic timing control (usually 5 seconds) • High-accuracy depth measurement (0.01 mm resolution) • Standard stainless steel cone (commonly 30°, 80 g or 100 g) • Stable base with leveling screws • Simple push-button operation Use • Determination of Liquid Limit (LL) • Calculation of Plasticity Index (PI) • Soil classification and geotechnical investigations Commonly conducted according to standards such as BS 1377 and ASTM D4318.