General Description - Geosense MEMS DPI I Instruction Manual

MEMS Digital Portable Horizontal Inclinometer
V1.1
09/02/2022
2.1.

General Description

The Geosense® Portable Inclinometer equipment is an environmentally sealed
assembly that is used to accurately and reliably register changes of inclination within
specialist inclinometer casing. The assembly comprises a probe connected to a
graduated cable that is held on a cable reel. The reel is Bluetooth enabled for
wireless connection to an Android Smart Device (ASD).
Inclinometer Casing can be installed or included in many types of structures and
monitoring regimes. It can be within vertical, inclined or horizontal installations.
This manual is focused on the horizontal Inclinometer System
Common applications include the following:
Embankment stability monitoring
Settlement/heave profile monitoring
Dam monitoring
Particular features of all Geosense® Portable Inclinometer Systems are:
Reliable long-term performance
Ruggedness; suitable for demanding environments
Bluetooth, cable free interconnection
High accuracy
Digital output and full EMI shielding
Designed with the user in mind
The Geosense® Inclinometer sensors are based upon Micro Electro Mechanical
Systems technology (MEMS). The MEMS accelerometer sensors in the Inclinometer
Probe are configured to measure changes in rotation (tilt or inclination). The probe
contains two sensors mounted orthogonally to measure inclination in the 'A' axis
direction (in line with the wheels) and rotation in the perpendicular, 'B' axis, direction.
Electronic circuitry within the probe interrogates its sensor and the corresponding
output is converted from an Analogue to a Digital signal, making it particularly
suitable for the demanding environments of geotechnical and civil engineering
applications.
Geosense® Inclinometer probes carry 'onboard' calibration data so that probe /
cable / reel / readout combinations are all interchangeable. Each element also has a
unique serial number.
Portable inclinometer systems are commonly used where monitoring is to be
infrequent or automated monitoring is too expensive. These systems are used to
determine the change in inclination of the inclinometer casing at intervals along its
length (commonly 0.5m or 2ft). This information is processed to generate a profile of
the inclinometer casing, with respect to horizontal and subsequent profiles being
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