Wireless In-place Inclinometer

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Model EAN-56

Model EAN-56 is the most advanced wireless in-place inclinometer (IPI) system, designed to measure the lateral movement of earthworks or structures. The IPI is used in critical applications where real-time monitoring and early warning are required in order to protect life and valuable assets.

The wireless IPI system basically consists of an array of digital inclination sensors, placed inside the inclinometer gage well.  The IPI sensor array is interfaced with the wireless network through a Node that allows sensors to send recorded data to the Gateway through a long-range radio frequency wireless communication network. The Gateway then uploads all the collected sensor data to the central/cloud server. Model EAN-56 consists of tilt sensors with both SDI-12 and Modbus output, making it more versatile for different types of dataloggers.

A single 3 conductor bus cable is threaded in a daisy chain fashion connecting each digital IPIsensor to its next immediate neighbor and finally to the top of the borehole and directly to the wireless communication network through a Node. This has great advantages at locations with a large number of sensors in a borehole, as it eliminates the hassle to accommodate a large number of individual signal cables inside the borehole. The wireless system adds to this advantage by eliminating the need for running lengthy cables across large sites.

The design allows each sensor to move independently to each other without influence from the sensors above or below. This provides a profile of displacement over the complete length of the installation. 

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Instruments Name

Vertical In-Place Inclinometer System

Sensor Type

Digital sensor (MEMS)


Consists of chain of digital sensors, for remote continuous monitoring of vertical gagewell


To measure sub-surface lateral movement in ground or deformation of structure such as retaining wall, pile, dam, deep excavation


Lateral movement/ inclination

Range (Mpa)

± 15°

Key Testing / Calibration

Accuracy test, waterproof test, individually calibrated, providing high accuracy & repeatability

Key Feature/Advantage

Hermetically sealed, SDI-12 and ModBus output options; great noise immunity, resistant to shock loads, can be reused

Protection (Waterproofing)

IP-68, water resistant up to 100 mwc

Dimension (Mm)


Other Inclinometer Products


Vertical Inclinometer


Horizontal Inclinometer


IPI with GPRS/GSM transmission


3D Inclino With Settlement

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