sensors

MEMS Digital Inclinometer

Traversing vertical probe system for profiling lateral deformation in boreholes, piles, and diaphragm walls.

Sensor Type
MEMS Accelerometer (Biaxial)
Range
±30° from vertical
System Accuracy
±2 mm per 25 m

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Overview

Traversing vertical probe system for profiling lateral deformation in boreholes, piles, and diaphragm walls.

The Geolook MEMS Digital Inclinometer System is the industry standard for measuring lateral movement (shear) in deep soil and rock masses. Unlike surface sensors, this traversing probe is lowered into a specially grooved casing installed deep into the ground. The system features a state-of-the-art MEMS biaxial probe that digitizes tilt measurements directly at the source. This digital signal is transmitted via a Kevlar-reinforced cable to a Bluetooth reel, which wirelessly streams data to an Android or iOS tablet. This modern architecture eliminates the connection issues, cable noise, and heavy readout units associated with legacy analog inclinometers.

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Benefits & Features

  • Digital MEMS technology (measurements digitized inside probe)
  • Wireless Bluetooth communication to field tablet/phone
  • Cable-free operation (between reel and readout)
  • High accuracy and repeatability (±2mm per 25m)
  • Lightweight, compact cable reel
  • Rugged stainless steel probe body
  • Long battery life (> 40 hours continuous)

Detailed Description

Why Digital?

In older analog systems, the raw voltage signal traveled hundreds of meters up the cable to the readout. This made data susceptible to electrical interference, moisture in connections, and cable resistance changes.

The G76-Y960 converts the tilt data into a robust digital stream *inside the probe itself*. This guarantees that the reading displayed on your tablet is exactly what the sensor measured 100 meters underground, regardless of cable length or condition.

The Traversing Method

A vertical borehole is lined with ABS inclinometer casing, which has four orthogonal grooves. The probe wheels track inside these grooves, ensuring perfect orientation.

The operator takes readings at regular intervals (typically every 0.5 meters) from the bottom of the hole to the top. By integrating these tilt readings over the depth of the hole, a complete 3D profile of the borehole shape is generated. Changes in this profile over time reveal exactly where the ground is shearing.

Wireless Efficiency

Traditional systems required a physical cable to connect the heavy cable reel to the readout box. This was a common failure point in the muddy, wet conditions of a job site.

The Geolook system integrates the battery and Bluetooth transmitter directly into the cable reel hub. The operator is free to move around with a lightweight tablet, viewing real-time plots and checksums to verify data quality instantly before leaving the site.

System Components

  • Digital Probe: Biaxial MEMS sensor in 316 Stainless Steel.
  • Control Cable: Heavy-duty, non-stretch Kevlar reinforced cable with depth markers.
  • Bluetooth Reel: Holds the cable and transmits data wirelessly.
  • Software: 'Geolook Incli-Pro' app for data collection, validation, and immediate plotting.

Available Models

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Specifications

Sensor Type
MEMS Accelerometer (Biaxial)
Range
±30° from vertical
System Accuracy
±2 mm per 25 m
Resolution
0.005 mm / 500 mm
Probe Wheelbase
500 mm (Metric)
Cable
Kevlar reinforced, marked every 0.5m
Connection
Bluetooth (Reel to Tablet)