DMS 2D multiparametric columns are made up of rigid elements in stainless steel AISI 304 or 316L or in ERGAL that contain sensors, control electronics and digital communication, connected to each other by special high resistance joints in reinforced rubber (max strength from 10 to 50 kN). The columns are centered in the borehole by means of special polyurethane centralizers or, where the columns are installed on the wall, they are fixed by means of special brackets and fixing ties.
The column thus composed makes it possible to accurately copy the deformations of the borehole, as a sort of "backbone" of the soil/rock mass strictly maintaining the orientation of the axes of the inclinometric sensors with respect to the reference system. Moreover, it allows to perform, within the same borehole, measure of pore pressure, temperature, acceleration, etc. for a complete and effective correlation between the various geo-indicators.
The columns can also be equipped with thin-layers packers that allow multi-piezometric measurements in boreholes adequately conditioned with a piezometric tube.
There are different types of DMS columns to adapt to the various monitoring needs, pursuing objectives of efficiency, quality and cost reduction.
The individual modules are equipped with one or more of the following sensors:
- Biaxial inclinometric sensor (I);
- Piezometric sensor (U);
- Temperature sensor (T);
- Triaxial accelerometric sensor (A);
- Digital compass (M).