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These are 200-mm outer diameter soil pressure gauges widely used at construction sites. 
They are designed with a dual-diaphragm structure that can minimize the displacement of the sensing surface when pressure is applied, and thereby keep the stress distribution in the soil undisturbed. KDA-PA and KDB-PA models are available with differing cable exit directions, with KDA-PA used to measure pressure in soil and monitor the behavior of embankments, and KDB-PA used to measure pressure in earth-retaining walls and soil pressure on walls of structures.

Protection ratings : IP 68 equivalent

Features

· Minute displacement of pressue-sensitive area due to double diaphragm structure

· Can measue dynamic earth pressure, too