In-place extensometers are used in conjunction with flush-coupled ABS inclinometer casing for the measurements of settlement or heave.
DEX-35 in-place system is designed to be left inside the casing to permit automatic or continuous monitoring. Strings of in-place extensometer sensors are joined together with stainless steel wire.
The sensors can be located at different depths where the settlement occurs. The model DEX-35S equipped with biaxial tilt sensor is also available for 3-D borehole profile monitoring.
OMNIAlog datalogger provides automatic monitoring and by means of GPRS modem or 3G router it is also possible to have on-line monitoring of unattended locations.