Operate Method : Chemical Reaction: Sample is mixed with calcium carbide in the sealed vessel; the pressure from the generated gas is read directly as moisture percentage
Equipment Materials : Metal plastic and electronic components
Usage : Quick consistency checks, estimating loadbearing capacity for shallow foundations, and logging borehole samples
Classification : Geotechnical Engineering / Site Investigation
Operate Method : Manual Push: The tip is pushed into the soil up to a reference mark; the calibrated spring measures the peak force, which is read directly as unconfined compressive strength
Usage : Preliminary soil investigation, checking consistency of compacted fill layers, and screening samples before lab testing
Classification : Geotechnical Engineering / Site Investigation & Quality Control
Operate Method : Force Application: The needle is pushed into the soil until the gauge locks at the maximum applied force, which is then recorded and converted to strength/resistance