Horizontal In-place MEMS Inclinometer

Geonor, Inc - Precision Instrumentation


The Horizontal In-place MEMS Inclinometer is designed to remotely monitor, and continuously measure, underground vertical movement as a result of construction and excavation and any settlement that may occur around tunnels, dams, embankments and landfills.

In-place inclinometers consist of one or more MEMS inclinometer sensors housed in a 31.75 mm (1.25 in.) diameter, water-tight, stainless steel enclosure. Each sensor is separated from the next by stainless steel rods and wheel assemblies. Rod lengths can be varied to alter the gauge length and sensors can be concentrated in areas of expected movement.

Wheel assemblies are sized to fit 70 mm (2.75 in.) or 85 mm (3.34 in.) O.D. inclinometer casing. As movement occurs and the inclinometer casing deforms, each sensor can be automatically monitored and can be read at a remote readout location. If necessary, an alarm can be triggered when movement reaches a preset critical rate or magnitude.


  • Optional single cable digital BUS system.
  • Highly cost effective per sensor point.
  • On board electronics.
  • Removable.
  • High precision, wheeled probe.
  • Easily adaptable to datalogging.


  • Monitoring stability adjacent to excavations or underground workings.
  • Monitoring settlement and vertical movements around tunnels, dams, embankments, roadways, storage tanks and landfills.
  • Continuous, automated reading where early warning of movements is essential for protecting life and equipment.


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